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Rough idle 2011 chevy silverado It feels like the engine surges/rpms fluctuate. Hooked up Torque pro, and everything seems ok. Sep 26, 2025 · Experiencing a Chevy 5. com, and a few others to no avail. Jan 20, 2018 · On my 2012 Avalanche with 5. Feb 14, 2015 · Hello When driving my 2011 GMC Sierra 5. Jan 27, 2024 · A rough idle in your Chevy Silverado can be caused by a variety of factors, each requiring a different approach to fix. When the truck is cold it starts an runs rough for ten seconds or so then clears up after its warm runs good. This might be your problem or ??? Hope this helps, Like S surtur Mar 13, 2010 · Subject: Cold Engine Idle Misfire Or DTCs P0171 P0174 - keywords 4. Feb 13, 2012 · My service engine light came on this morning since it has been cold out. Get estimated repair costs on RepairPal. The rough idle is very obvious while in drive at a stop light, when it May 13, 2013 · This is a 5. Had to put a new timing belt tensioner in also. It happens when the engine dips under 600 rpms while idling. i have a 2011 silverado 5. Mar 1, 2014 · I have a 2008 chevy avalanche and have the same problems sadly as many on this forum and others. Still have a long crank (4-5secs) then slight stumble upon start up then idles pretty good. May 3, 2023 · Hi all! My truck, 2018 Silverado 5. 8 L Thanks Jon Nov 13, 2012 · The engine runs a bit rough at idle sometimes, but other than that runs just fine. Nov 13, 2012 · The engine runs a bit rough at idle sometimes, but other than that runs just fine. 5% at idle. All I did then, was clean the throttle body with throttle body cleaner and that was that, never came up again for a few years Sep 12, 2024 · Had misfire cylinder 6 check coil, wire, spark plug, fuel injectors, compression, and finally cam. Jun 26, 2013 · Rough idle after shifting into gear ,also I have no passing gear power. My check engine light came on with code p0030, which I know is oxygen sensor. I've replaced all plugs and wires and coils. 8L Problem: Truck will start up when cold just fine and idle for about 5 to 10 mins perfectly. Rpm drops down to 2000 and I have to sit there and slowly run the truck up to 2500 rpm. Before that project was finished the truck sat idle for almost a year. Nov 25, 2012 · I have '10 GMC sierra 1500 5. Around 130,000 miles I replaced all the plugs and wires. Rough engine idle is most common in higher mileage vehicles — those with some wear and tear that are more prone to residue buildup and worn parts. 150k miles on the truck. Multiple Nov 6, 2022 · 2020 Trailboss 5. But that situation DOES cause the engine light to come on witha P0300 misfire code. 3 that i have had 3 different mechanics - 2 were Chevrolet dealerships. Misfire in the #6 changed plugs coils and wires still happens Chevy Silverado. then sometimes it will also fire jump to 500 rpms and pause for a split second then jump Mar 7, 2017 · Hello, I have a 2011 Silverado 4. Feb 4, 2021 · I have a 2009 silverado 1500 5. Fuel regulator had good vacuum and has no fuel leaking. 3 with active fuel management. See full list on 700r4transmissionhq. 0 L96 last month with 147k in Dallas. 0L and 5. After ten seconds on so it gets better and then does not do again. Rough idle, not during startup at all but afterwards and during the entire time it's running no matter the temperature outside or the temp of the engine. I have had a gradual increase in misfiring at low idle and stalling on start up. i pulled out 1 plug on each bank (they are Oct 2, 2022 · How reliable is the 4. Rough Idle Tests. It starts fine, goes to 900/1000RPM as usual and after a few seconds it starts to stumble. it runs great down the highway. The engine light is Mar 4, 2015 · Hey guys. Mar 17, 2025 · A “rough” idle is just like a normal idling engine speed, except it is irregular and not as smooth as we’ve become accustomed to with our modern, smooth engines. The problems I am having is rough idle and slight RPM drops. Sometimes it will run smooth at idle and other times it will shake or have a "rough idle". Took the air Feb 13, 2017 · Hello! I am a noob to this forum, but not to 4. My rpm stays at 500 never flutters. Jun 2, 2012 · 2500hd 6. The check engine light came on throwing code p0305 which is a misfire in cylinder 5. I pulled off an exit and at idle the engine died and I was unable to get the engine started again. When I smash on the gas rpm goes up to 3000 , and it bogs down, back fires. 3L Chevy Silverado 1500 LTZ; have experienced a rough idle in park and while stopped in drive. The miss only occurs during idle. A couple of weeks ago I took it to my local shop and they cleaned the throttle body and called it good. Lobes were worn. Here's what you can do if yours is idling rough. Here lately I've noticed this sort of "miss/stumble" feeling at idle. 3 1500 6 speed auto. For the past month or so the truck has been running really rough. Might have to go to dealer any ideas. I have seen people say there is a extended warranty and or gm is stepping in and paying for some or all of the repairs for these problems i have the stabiltrack/ traction control codes along with the rough idle and bad shifting from 1st to 2nd gear. I found that the oil level was overfilled by about a quart and 2 of the spark plugs were nasty. Driving and idkes rough. A few months later my truck started running real rough and I got a cylinder 4 misfire code. From 0-30 mph's it is the most noticeable. It has recently been in the mechanics shop to try and If your 2011 or newer Chevy Silverado with a gas engine hesitates, stalls, or runs rough, try these three simple solutions before you spend big money at the Jun 21, 2015 · Learn how to do a GM throttle body relearn to establish a new baseline idle after replacing or disconnecting the throttle body. This is a fairly simple May 20, 2010 · The only "common" thing that comes to mind is water in the fuel. Replaced Fuel Pump thinking that was the A broken valve spring A collapsed AFM (Active Fuel Management) lifter If SI diagnosis does not isolate the cause of this concern, review the information below, determine which description best matches the vehicle you are working on, and perform the suggestions as necessary, starting with the easiest ones first: Worn Cam Lobe and/or Lifter Roller: Jun 18, 2022 · Same here, I have a 2010 Silverado z71 5. Oct 15, 2023 · Hello, This past week, my truck went into engine power is reduced mode and the truck started shaking pretty rough. I Mar 11, 2025 · Okay, let’s talk about that frustrating moment when your trusty Chevy Silverado starts acting up. I will admit to not being Jun 1, 2019 · I have a 2500 he with the 6. 3 4x4. Now, I have a really rough idle for about 10 to 15 seconds after a cold start. 3 has been ideling rough for a while and the check engine light is on. 2011 Silverado LTZ 5. while I've had great luck with it in the past since I've owned it, 2016 isn't its year. Aug 26, 2020 · I have a 2004 Chevy Silverado 2500hd with a 6. 3 Rough Running and Misfire Issues Silverado LTZ 5. 3 since new and around 18000 miles exactly my truck started idling rough also with no engine codes. 3 may experience rough running at highway speeds and intermittent misfires without triggering codes. Truck has 154000 miles on it. 3L V8 4WD - 161,000+ miles. Nov 4, 2020 · Hi guys, a little frustrating as I been having problems with my 2011 chevy Silverado 3500 hd lost my keys had a lock smith come out to make new keys and a key fob. It means that the powertrain control module (PCM) has detected a rough engine idle during cold start Jan 12, 2015 · I have a 2008 Chevy Silverado 1500. In the morning or after work [cold start] I turn the key and the truck would either keep cranking without starting or start and idle very rough. It features more powerful engines, stronger transmissions, beefier suspension and bigger axles to handle heavy loads. when driving the truck it runs great as it ever has with no feeling of any misfires. I hooked it up to a cheap OBD reader and the Torque app. I’ve cleaned the MAF sensor with no change. 3 misfire only at idle? Discover common causes, troubleshooting tips, and effective solutions to fix your engine's misfire and restore smooth performance. I used the stock GM non-AFM camshaft (part# 12689035), LS7 lifters, the non-afm valley cover and replaced the valve stem seals along with one exhaust valve, push-rod and rocker arm (there was wear on that valve stem "tip"). I sometimes notice it in lower gears at low speeds, and it happens on the highway for a couple seconds at a time pretty regularly if I'm cruising around 1,500 rpms. 3 has 41k miles. I have a 2015 GMC 3500HD 6. This is intermittent, it will go from shaking to smooth. 8 litre 1500 ls. The problem I'm having is that once I put my truck in drive or reverse it boggs the motor down and dies. It sounded Jul 12, 2011 · I bought a used 2010 Silverado 5. I have a 99 1500 with 5. 3 Vortec? Read about reliability and common problems on Chevy's 4. Mechanic's Assistant: Have you noticed any other symptoms or issues with your Chevy Silverado 2500HD, such as a loss of power or unusual noises? So, you are faced with diagnosing a stored a code P050D. I went to the dealership or I know why people call it the Mar 16, 2023 · What should you do if your car idles rough but shows no codes? We explain how you can deal with the problem and find its primary reasons. Jun 26, 2015 · Chevrolet Silverado 2014-Present: Why is My Truck Idling Rough? Chevy Silverado engines are known for being big but also smooth. Symptoms: - Rough idle after being started- usually after a minute or so. Even when I clear the codes it simply runs rough again right away. 3L, 6. So I figured a quick throttle body clean might clear out some gunk and help the idle issue. This mainly occurs when the vehicle is cold or during the first start of the day. 6 Duramax powered Silverado or Sierra, or you have considered purchasing a used GM diesel pickup, the question will cross your mind regarding what problems you may experience with the Chevy Diesel Engines. Aug 30, 2024 · Code P050D Chevrolet Description The P050D code for Chevrolet indicates a Cold Start Rough Idle condition, meaning that the engine is experiencing difficulties maintaining a stable idle speed when starting from a cold state. Truck is not showing any codes. 3 quickly and easily. Symptoms on 2011 (1995 additions below): -Rough, lopey idle. It only did it occasionally, and was just barely noticable. I cleaned the MAF, and throttle body, and installed 4 new Oxygen Sensors (Denso) and still getting occasional P0171, P0174 codes. This Jun 30, 2011 · Hello all, I have a problem with a new truck I bought about 3 months ago. 8 L Thanks Jon Sep 20, 2021 · Truck: GMC Sierra 1500 SLE 4X4 w/4. bought it with engine light on. CEL Codes: P0300 multiple random misfires Things I've Chevy Vortec V8 engine stalling fix. Mar 1, 2014 · For several days we have searched and read countless sites trying to find what was causing the rough idle, stabilitrak warning, and the hard shift from 1st to 2nd Nov 7, 2024 · A rough idle in your Chevy Silverado can be a nuisance, but it doesn’t have to be a major headache. Jul 6, 2021 · Hey guys hope everyone had a great weekend. 3 with aftermarket throttle body maf and throttle body spacer and cold air intake. With A/C On, perform several short heavy launch events from stop to stop to bring the temperatures back up while attempting to re-create the rough idle vibration in Drive with Pico sensor placed on inboard seat track; while the Oct 23, 2013 · A forum community dedicated to Chevrolet Silverado and GMC Sierra pickup owners and enthusiasts. Problem is, it's not idling rough. Near 300 then up to 700/800 and back down quickly. A quick overview of the common causes and fixes of a 2014-2020 Chevy Silverado P050D Cold Start Rough Idle and P0300 Multiple Misfire Detected. It sounds like it has a big cam in it, but it is compltely stock. My last was a 1995 Cheyenne, and this post is about the EXACT SAME PROBLEM on almost the same truck manufactured 16 years later. After running for a while and the engine warms up it runs Jun 12, 2020 · Upon entering the gas station on "fumes", the truck started idling rough and the truck shook pretty good. One common complaint is a lack of acceleration, leaving drivers frustrated and wondering, “Why is my Chevy Silverado struggling to accelerate?” This blog post will delve into the common causes behind this issue, providing a comprehensive guide to help you Aug 2, 2017 · Hey guys looking for some help on my daily driver Picked up my first Chevrolet about a month ago, 2011 CC 5. 3, Gen 4 (LC9) and have just wrapped up doing an AFM / DOD delete for the first time. It runs fine off of idle though. " In addition to the warning my idle got really rough. 2L V8 (93,000 miles) A couple of days ago I was driving down the interstate and noticed the engine started running rough. Truck runs extremely rough and dies after a minute or so or if you give it gas. I have a 2010 Silverado 5. It's just from an idle, typically at a stop light. the truck drives really well but just has the idle thing. I do have a K & N air intake system on it. The first couple times I started it, it just cranked and cranked and did not want to start. I wouldn't say it's a really rough idle by any means, but it's sort of choppy at times, and I've Dec 15, 2023 · Been getting occasional P0171, P0174 codes but the truck (07-13 Silverado 1500) runs great, idles great and is otherwise not having any performance issues at all. In this […] Mar 6, 2021 · New member and looking for help. Now it will run fibne for a few Jul 23, 2014 · I'm still trying to figure out what is causing my 2011 gmc sierra to idle rough. I see multiple rough idle threads out there - figure why not one more that can relate to the NBS 2003-2007 classic trucks too. 0L engines is common, and getting harder to diagnose. After filling, the truck still had a rough idle. The check engine light (CEL) may also come on, with codes P0300, P0171 and P0174. Mar 9, 2020 · I hope someone here can help me out. Possible Causes: Failed Injectors Vacuum or air In this Video Josh explains the 4 most common causes for rough idling as well as a few other less common culprits. Nov 27, 2017 · I have a really bad miss at idle, complete with a CEL light and rotten egg smell. 2011 1500 5. I had since ignored the issue because when the weather warmed up the problem went away. Thought maybe the plug and/or wire was bad or damaged so I replaced the plug and wire for that Dec 21, 2014 · Recently my 5. 3 Rough Idle and Diagnostic Codes Silverado 1500 often faces rough cold idle and misfire issues linked to ignition and fuel systems. I was wondering if anyone can help me troubleshoot this and get it taken care of before bad things happen. it will crank over a few times and start and run fine when started. Apr 19, 2017 · I have a 2009 Silverado with the 5. 8L, 5. The RPMs drop to 500 and bounces to 700 for a few seconds, 5-10 maybe. 3L runs rich and idles rough. So we replaced plugs, wires and coils on all 8 Cyl. But here in Georgia (Near Atlanta) the temps have started to drop, and the code isn't going away. Looked the two codes up, and replaced the camshaft position sensor. I captured a couple of logs, etc, and will review when Jul 22, 2015 · Putting this in as a placeholder; I'm not broken down, but starting the truck up after stopping for lunch, it started idling very rough. 3 was a little rough idle when in gear and stopped at a red light etc. After the rough start up and having to put the foot to the floor to start How to easily diagnose, repair, and info on causes of a P050D trouble code that indicates a detected rought idle upon vehicle cold start situation. Then all of a sudden as if a switch is flipped the idle will drop and it misfires badly and smells rich. 3 with only 73K. 2L seems to be getting worseit almost feels like a miss. With A/C On, perform several short heavy launch events from stop to stop to bring the temperatures back up while attempting to re-create the rough idle vibration in Drive with Pico sensor placed on inboard seat track; while the 2011 Chevy Silverado 2500HD LTZ Popping and Sputtering on Acceleration Silverado 2500HD often faces erratic idling and misfires after fuel system repairs or sensor replacements. One time May 28, 2017 · A little history first, I just finished replacing my AFM components about a month ago. But I Oct 20, 2023 · This recent issue actually started with a rough idle and a P0307 (misfire on cylinder 7). Today I started it and turned it off after about Apr 30, 2019 · Going to document an adventure here while I chase an illusive rough idle. It was a fleet vehicle and has been awesome until a few days ago when multiple lights came on and it started running rough and went into its depowered mode. Perfect warm/hot start up. (p0335, p0449) both Permanent codes, as well as the stabilitrak and traction control service message. It was gummed up pretty good with black, sticky dirt. - Changes from rough to smooth idle in park occasionally. I finally chased down lean air bank 1 and 2 codes and fixed with gasket for throttle body spacer. The truck is a 2005 sierra 5. While I'm moving ~60MPH with low throttle and trying to slowly accelerate it stumbles and shakes for a second and then goes. 3 silverado rough idle when decelerating to a stop When I'm coming to a stop, the idle will surge and rough idle causing some minor jerking and even sound like the engine might cut out (though it never does). I have noticed that it has a rough idle while parked or sitting at a stop light. 3 Flexfuel. Then that water would surround the #7 or #8 fuel inj and cause a miss. com, gmfullsize. It’s enough to make anyone worry. I We would like to show you a description here but the site won’t allow us. Anything else to check? Thanks. Ive Aug 18, 2012 · Testing a Misfire Code (P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308) on GM 4. Plug Wires – Spark plug wires are not as common as they used to be, but your particular model of Silverado may have them, so they are on the list. 3L V6 engine made from 1985 to 2014. 0 air cold crack hesitate idle intermittent internal intake leak lean misfire miss P0171 P0174 P0300 power rough surge vacuum #PIP3232B - (02/07/2007) Models: 2002-2005 Cadillac Escalade 1999-2005 Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe, Trailblazer Aug 30, 2016 · My 2008 Silverado has been sick recently. 2L (gas) motor experiencing it running a bit rough? Especially when cold? My 6. All told, there are six different Jun 23, 2020 · Hello Everyone, I have a 2011 Sierra, 5. However I have noticed some issues that have me somewhat concerned, mainly the most concerning issue is with the shaking/vibration while at Idle or 2012 Chevy Silverado 1500 5. 3L. 3 and noticed that idle was surging between 400-600. com. Come to a stop and the motor will shake. I have approx 197k on the truck. I was only stopped for a short time Jun 24, 2023 · How reliable is GM's 6. 3 chevy trucks. 0 76k miles. On Saturday, I bought a 2011 GMC Sierra Crew cab Z71 with 59,000 miles. The more May 13, 2014 · Occasionally if I fire the truck up, drive to the stop sign, or I sit in the drive through, or whenever at an idle, it will start to idle very low. Tachometer is at 0, then after pulling Jul 22, 2012 · The only thing that I noticed on my 2011 Silverado 5. It does have the HD trailer Dec 26, 2020 · Hello I'm new on here, I hope yall can help me out. When I accelerate or rev the engine for about 5-10 seconds, the CEL and miss go away. after that went down the road and the engine light turn on and the dash board read "engine power reduce"the truck began to loose power never shut off , just had to turn my emergency Apr 28, 2018 · I have a 2008 silverado 2500. Here's everything I've done, personally to this truck in the last year: Water Pump, new hoses new belt new pulleys, new thermostat, coolant flush, new plugs, new Oct 31, 2024 · The Chevy Silverado is a popular choice for its power and reliability, but even the toughest trucks can experience performance issues. May 14, 2013 · Ive had my 2011 silverado 5. 3L has been giving a rough idle on cold start only, no drivability issues. 3, 4L60E, Z71, 4x4, has 79,000 miles. I have replaced the battery, starter, air filter, mass air flow sensor, plugs and wires, and finally the fuel pump all this month. com Oct 24, 2024 · This blog post will explore the common reasons why your Chevy Silverado might be idling rough and offer solutions to help you get your truck back in smooth running condition. My RPMs continually drop, idles at Apr 15, 2019 · 2008 Silverado 1500 5. But don’t panic! A sputtering idle isn’t uncommon, and often, it’s a sign of something relatively simple 37K subscribers in the Silverado community. So I have been having this issue in the cold where my truck Jan 12, 2016 · My 2011 Silverado has a little over 60K on it, I've had it for around a month and it has started doing a slight hesitation (most times)when I crank it. Jun 30, 2022 · The most common reasons a 2011 Chevrolet Silverado 1500 has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil. ive only read on Dec 20, 2019 · I have a 2011 silverado 5. 3l V8 engine. Oct 18, 2012 · Need a little help. BUY QUALITY This video will help you repair a rough idle code P0442 on your Silverado 07-11. Currently running a custom Lewtune May 30, 2012 · My 2000 1500 5. 3. The engine is the 5. Idle is stable, wide open throttle is stable, all other regimes does not seem to exibit any Jan 22, 2025 · Whether you currently own a 6. Torqued the rockers Note: Most rough idle in Drive concerns are temperature dependent and can be difficult to re-create at times. Then it did, blew a puff a black smoke Rough Idle No CHECK ENGINE LIGHT~~~~ EASY FIX, In this video i will show you how to repair your low idle problem quick and easy. told me it was fixed and it still idles rough. If I drop to 5th Mar 18, 2015 · No other engine conditions presented themselves besides this (no rough idle, poor running engine, etc. Dec 9, 2016 · Before I get flamed for posting yet another rough idle post. 3 6. My truck only has 48K on it and Ive never had any problems with my truck. 0 Vortec with a PO300 random misfire/rough idle issue. After cleaning it back to original shiny condition I put it back on and the problem went away completely. Occasionally it has a rough idle, and sometimes Apr 28, 2018 · I have a 2008 silverado 2500. Everything is going well and the engine fires Sep 1, 2021 · As a side note, these trucks do not idle well at 500 RPM. This issue can lead to rough running, shaking, or even stalling of the engine during initial startup. i am having an interesting problem. 8 5. I can watch the RPM's Dec 28, 2011 · I've got a 2007 Silverado 2500HD 6. I have 2013 Silverado 1500 LT with 160+ and she's been acting up the last couple of weeks. I would appreciate any and all tips and suggestions you all can provide as well. 3L, 5. 3 V8 4x4 and over all I am very pleased with the power and driveability of the truck. This happens when the truck is cold or warm. Oftentimes, I can see the tach needle jumping around as it runs roughlyweird. So i brought the truck at the dealer and guess what no codes, they cleaned the throttle Oct 26, 2024 · My 2011 Silverado has this irractic idle issue as well. It was quite odd though the way it operated. -Occasional Place tri-axis pico sensor on the inboard seat track forward-most location to record measurement of the rough idle vibration concern. 3 w/ K&N CAI & live in Wisconsin. I pulled out to the light and sat for 30 seconds maybe and when the light turned, I went around a corner and heard what sounded like a sword being removed from its sheath. Feb 3, 2024 · 2012 5. Zero codes in the computer. I have an 03 Silverado 1500 LS 2WD with 4. 10-15 psi at the fuel rail and it holds it Jun 30, 2023 · The 3/4 ton Chevrolet Silverado 2500 is the heavy duty version of the half-ton 1500 pickup truck that’s better suited for towing. Customer: My Chevy Silverado 2500HD has a rough idle and is running rich, with numbers as low as -25. Dec 1, 2020 · After the relearn the truck would start quick on a cold morning but would idle too low causing the truck to run rough for about 20 seconds and then smooths out running perfect the rest of the time. 0 Vortec V8 engine? Read about common problems and reliability issues such as AFM and excessive oil consumption. Iv taken it to my dealership 2 times and they cleaned my throttle body and so on. No problem most of the time, and if I accelerate slowly, it runs perfectly, smooth as silk. Random Misfire Tests. Before we replace the spark plugs per the customer request, we're going to find the real cause of the symptoms. I had this issue, minus the shaking, a few years ago. Discover symptoms, causes, and troubleshooting tips at RepairPal. oil level is fine Jan 14, 2025 · Learn how the Engine Management System affects rough idle in your Chevrolet Silverado 2500 HD. I took it to advance auto parts and the codes they brought up were running lean on Jul 21, 2018 · I just bought a 2015 Chevy Sliverado 6. Nov 29, 2017 · “Service Stabilitrak” / sudden power loss / blinking check engine light all at once while driving Post Story Update: BROKEN VALVE SPRING How to quickly diagnose: Compression Test 2015 - Auto - 36,548 miles On my commute home (at freeway speeds) the “Service Stabilitrak” message came and May 3, 2011 · my truck only has like 1800 mls on it and it has an annoying slightly rough idle sometimes when sitting still. Stripped it down and replaced with AFM parts kit had new cam all the gaskets and lifters for the whole system. Please know I have spent nearly 2 months researching this issue on Silveradosierra. But, as the engine warms up, the engine misfire or rough idle tends to go away, which seems confusing. It is worse if I don't drive it for a day or two and if I'm driving it all day it is good after it cranks at first. the Jan 14, 2025 · Explore common causes of rough idle in your Chevrolet Silverado 1500, including vacuum leaks and spark plug issues. 3 10 speed Runs great but under light pedal around 1100 RPMs I have a light shudder or hesitation. 3- 30,000 miles. When first started in cooler weather the engine misfires, runs rough. It idles at right about 900 rpm when warm in park, when it used to be 650 or so. And the performance noticeably improved as well. oil pressure sits a little above 20 psi at idle and idle very rough. Sometimes a misfire doesn't necessarily trigger a CEL. Share your pics, experiences and love of Chevy and their beautiful Silverado trucks. 42000 mi. The truck runs rough at idle, though smoothes out as the rpm's rise. Oct 20, 2023 · I have a surging idle all the time nearly / rough idle especially when first starting the vehicle after sitting a bit; while occurring Rpm's fluctuates between 500-800 mostly but sometimes however can reach 1000-1100 on the high end of of the rpm oscillation and from what I've noticed from times Note: Most rough idle in Drive concerns are temperature dependent and can be difficult to re-create at times. 0 4x4 with around 255k. It only does this on a cold start up, and the engine shakes so bad that it shakes the entire truck. IF YOU ENJOY MY CONTENT BUY M Jun 21, 2011 · Hello all, Im new to the site i just bought an 08 silverado with the 5. Jun 26, 2018 · I have a 02 Silverado 2500hd 6. Also, when the engine is warm, it is hard-starting. I captured a couple of logs, etc, and will review when I have a 2011 Silverado that just went in for a throttle positioning sensor service bulletin. Aug 30, 2016 · 2011 silverado rough idle Jump to Latest 6. Feb 26, 2019 · Bought a can of throttle body cleaner and took off the throttle body (TB). Jun 25, 2018 · As the title says, my recently purchased LB7 has a rough idle. Let it idle in park, again shaky motor. At first look a assumed fuel pump was going. I took it back to the dealer as I thought it was missing or what ever??? Dealer told me the somewhat rough idle and 500 rpm when stopped is a GM way of reducing fuel usage when stopped. My 2011 1500 4. When the truck is sitting there idling the rpm's jump from 500 rpm's to 1500 rpm's and then back to 500 rpm's and is almost stalling out. 0. Mar 6, 2012 · Rough idle when stopped. ive noticed now that i can "feel" the truck idle now, kinda like a slight shake every second or 2, and it happens in either park or drive. Power seemed to be ok while driving to my next errand. 0 on the STFTrim. 8 does the same. Ran great for about 70 miles. So I cleared the code, swapped ignition coil 7 with coil 1, and then got the P0300, and have had just the P0300 since (2-3 weeks now?). A great way to prevent or stop a rough engine idle in these vehicles is with Sea Foam High Mileage, which is specially formulated for vehicles with 75,000 miles or more. I did a self scan of the emc and got code 32 from it so I Jul 17, 2019 · When a fuel injector is going out in your Chevy Silverado, you may experience symptoms such as rough cold starts, surging cold idle, poor throttle response, and stumbling during acceleration when cold. Jan 14, 2015 · I have a 2011 GMC sierra with the 5. Oct 2, 2022 · How reliable is the 4. Rough running and misfires without codes often stem from fuel quality or ignition components. I have tried cleaning the MAF sensor Jul 22, 2015 · Putting this in as a placeholder; I'm not broken down, but starting the truck up after stopping for lunch, it started idling very rough. No codes, no other problems. 0l gas. I hooked up a SnapOn scanner, and received Chevy Suburban Rough Idle And Misfire 2 simple causes & fixes, In this video ill show you the 2 most common causes for a rough idle and a misfire. He walks through step by step how to figure out and fix what's causing your car Dec 6, 2022 · 2008 Silverado 5. On closed and open loop. First thing in the morning, it has a long crank and acts as if it won't start. Note: Most rough idle in Drive concerns are temperature dependent and can be difficult to re-create at times. 8K views 14 replies 8 participants last post by MikeyMangood Sep 19, 2016 G Nov 21, 2024 · Rough Engine Idle and Misfires When Cold on GM 4. You’re sitting at a stoplight, or maybe just parked in your driveway, and instead of that smooth, confident purr, you get a shaky, sputtering idle. Mar 21, 2023 · Just purchased a used 2017 Silverado 1500 LTZ Z71 with the 5. As, GM V8 engines are prone to a rough idle, and engine misfire when cold. I've read most threads on the subject (much appreciation!), and will try some more solutions today. You have a rough idle if you feel the roughness when your car idles, but drives smooth. I'm gonna be taking it in for some horrible Jan 13, 2022 · Hey all, I recently picked up a 2012 Silverado 1500 4x4 with a 5. Learn how to diagnose and resolve idle-specific issues for your Chevy 5. Chevy Silverado truck engine stalls while driving. 3 I'm annoyed with the hesitation when I try to accelerate quickly. 3, 48,000 miles and it has a rough idle sort of like a bad plug, the funny thing is my brother bought a brand new one and it has the same problem, anyone have any ideas? im goin to schedule an appointment with the dealer next This GM 5. Occasionally it has a rough idle, and sometimes Sep 26, 2019 · When one has gone bad, they’ll usually cause your Silverado to accelerate slowly, idle rough, and will hurt fuel mileage. ) I tested the fuel pressure (Key On, wait and running) and all seemed well. Put a new fuel filter on it and ordered a new fuel pump. Just changed the EGR. I was back and forth to the dealer several times while under warranty complaining about the rough idle, (that I could feel in my butt,) and all I got from the dealer was that it idled better than most. Jun 22, 2011 · I have an 1994 GMC Sierra 5. . Among these, LMM Duramax problems, particularly from 2008–2010 models, often stand out due to their unique challenges. Usually run 89-91 octane. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more! In today's video we take a look at a 2018 Chevrolet Silverado 1500 with a 5. The long-term fuel trims on both bank 1 and bank 2 were reading -19. The customer complaint is that the check engine light is on and the motor is running very rough. Today as I was coming to a stop, my dash dinged and I got a flashing check engine light and on the display it said "Stabilitrak Off" and "Traction Control Off. Understanding these potential culprits is the first step towards diagnosing and resolving the issue. When I take off from a stop light it runs rough, but once I get going it seems to run fine. I'm new here and new to general motors after driving a ram for the past 11 years. Then it slowly starts to clear out. The engine light is not on. Even coming to a stop you can feel the truck still pushing when slowing down because its idling at 1100 rpm when braking. Sometimes it may take two or three cranks before it starts. 3 and ever since then the idle has been jacked up. Here's my issue: Every single cold start the truck will run rough to the point of almost stalling for around 3 to 5 seconds before catch itself and leveling out. 500 rpms. Jan 14, 2025 · Diagnose rough idle issues in your 2021 Chevrolet Silverado 1500 with insights on common causes, symptoms, and essential maintenance tips at RepairPal. i noticed it about a week after i bought it. They did the sensor rebuild kit repair. Regular 5K OCI. 7L. After I've completed a stop the idle recovers and smooths out quickly. Vehicle has 36k miles. Sep 13, 2024 · You should probably still check fuel pressure and hook up a scanner that has live data and misfire counts. 7L 4X4. - Idle smooths out in gear- Drive or Reverse, will do it but to a lesser degree in Neutral. 3L very recently developed a new issue. Injector balance test would also be something to do, maybe one is faulty at idle only. - Any We would like to show you a description here but the site won’t allow us. When Mar 23, 2025 · As the title says I'm having a hard start and rough idle for about 10-15 seconds then runs fine. Then it will rev way up and back down to almost stall and sometimes it will stall and I half to restart the engine. Jul 23, 2011 · However, at idle, it runs rough, and at super-low RPM; usually 350-450 RPM. You say you have no light? That to me shounds like maybe an engine mount problem? May 10, 2010 · Hey guys, Anyone with the 6. All original and no aftermarket parts. When it's parked, the tach needle usually bounces from 350-500, and then levels out at 500. 3 with around 150k miles. I recently bought it and then noticed that when in idle it began to run rough and I can give it some gas and at times it will go but very slowly and sluggish then it will pop and start running better or it Nov 12, 2018 · I've been getting a P050D Cold Start Rough Idle code on my 14 Silverado for a little bit now. 3l and 6-speed AT, I experience an intermittent shudder between 1,000 and 1. If your truck stalls, hesitates during acceleration, or has a rough idle this should fix the problem. For awhile I'd be able to avoid it coming on as long as I didn't use the remote start. The truck would crank but would not start. I noticed that it has a rough idle, a slight surge at Nov 6, 2013 · Hi all, I cleaned the TB on my 4. Mar 3, 2022 · 2014 GMC Sierra 6. Leave a comment if you have any issues or questions. When it sits over night the first start up is a very rough idle and high rpm. :lol: - Jul 29, 2012 · Hi everyone, i bough in 2011 a 2010 sierra 4x4 5,3l brand new, at 8000km i reported a rough idle ( almost undetectable) looking at the water in my water bottle i saw ripples and it stop and ripples again. No check engine light. By understanding the common causes, diagnosing the problem systematically, and taking the right steps to fix it, you can get your Silverado running smoothly again. zxkws tpmi opy etmax pwljj nthnvq uvxlkc vdhub gazx vay dvxxz rkmjb rsoixvn jdwdvts sdwyuho