2011 Chevrolet Silverado 1500: misfire or rough idle

Filed Jan 31, 2025 · Engine, Fuel system · TX

The software that makes the truck work as a 4 cylinder truck has caused the engine light to come on and causing a code P0300 various engine misfire. The misfire is caused by the lifter spring causing the lifter to remain in the down position. The down position is against the can rod and as the cam rod rotates, this causes the lifter to break at the bottom and causing the can rod to also break which will cause an engine failure while drinking and the motor will freeze . All GMC and Chevrolet vehicles with this installed should be recalled. Everyone has been fixing it themselves by replacing the part(s) once a pinging noise is heard at 50,000 miles. Basically every 50,000 this will need to be fixed. Some people are turning off the 4 cylinder software to avoid the problem which in both cases, uses more gas and also idles higher.

Filed Nov 11, 2022 · Driver assistance, Engine · MI

While driving, all the sudden my check engine light came on (flashing), and my stabilitrack light came on. The engine started running really rough, and lost power. It is like major misfire. Upon reading up on this, it is a problem with this type engine. I saw about 2000 people with the same issue. Nothing works to resolve this problem. Coils, plugs, and wires were replaced, and still the same.

Filed Jun 23, 2020 · Engine · 103,000 miles · NY

In june of 2019 my vehicle was brought into begnal motors in kingston ny with the check engine light on. There was also a warning for the stabiltrax system and low oil pressure. I brought it to begnal motors because that is where I purchased the vehicle. The vehicle was still under warranty at this point. They being a dodge dealer then sent the truck over to romeo chevy who diagnosed it as an engine misfire. They had the truck for two months for the repair which the warranty covered. I got the truck back and soon after the engine light came back on. At this point the vehicle was no longer under warranty. It took the vehicle to my local mechanic absolutely auto in new paltz ny. They send a code for the oil pressure sensor and the o2 sensor where showing up. They replaced both sensors. After the work was done the oil pressure sensor still wouldn't clear and the engine light came back on. The mechanic told me that these sensors are known to have problems on the silverado. He then rechecked he's work to make sure there was a new screen on the sensor and there was. The code(p0521 I believe)still wouldn't clear. He then referred me to take the vehicle back to romeo chevy because they had done all the work on it previously. I brought the truck back to romeo and they did a complete diagnostic test and got no answers. They then did anther oil change and an oil pressure test with no result on clearing the oil pressure code. Romeo chevy has at this point had my truck for another three months unable to diagnose the problem. They now say I need a new engine and that the oil pressure issues cannot be fixed. Their service rep told me they had another silverado recently with similar issues and they had to replace the engine in that vehicle. I would appreciate some help in this matter the vehicle has only 105000 miles and I am being told it needs a new engine because of oil pressure.

Filed Nov 17, 2019 · Driver assistance · 135,000 miles · AL

Stabilitrak and traction control system have went off several times in the course of the last month. The car goes to rough idle and transmission kicking back really bad. Every time the mechanic ha checked, at least three, he had found nothing wrong. I think this something related with software. Looking into internet, seems to be thousands of people affected with this problem.

Filed Aug 30, 2019 · Engine · 120,500 miles · MN

Tl* the contact owns a 2011 chevrolet silverado 1500. While driving approximately 50 MPH, the engine sounded high and misfired. The contact stated that various unknown warning indicators illuminated. The vehicle was taken to two different independent mechanics who confirmed that the engine misfired. One of the mechanics diagnosed that the engine may need to be replaced. The vehicle was taken to cornerstone chevrolet (763‑220‑1548, located at 1005 highway 25 s, monticello, mn 55362) where the technician diagnosed and replaced four of the lifters in the cylinders. The manufacturer was made aware of the failures and stated that there was no recall. The contact stated that the vehicle was only partially repaired. The failure mileage was approximately 120,500. The VIN was unknown.

Filed Aug 31, 2017 · Engine · 76,000 miles · TX

Purchsed brand new. Truck now has 76000 miles on it. Check engine light turned one as well as stability track light while coming to a stop. Truck began to shake a bit.. Dealership took a week to diagnose said misfire on cylinder 6. Need to replace the cam shaft and all lifters. Chevrolet states 100000 mile power train warranty. Truck has been serviced at dealership with oil changes on time. Case number with gm [xxx]. Parts of this document have been redacted to protect personally identifiable information pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).