The vehicle is displaying error messages Reduced Engine Power, Service Stabilitrak, Service Traction Control. It also has the related service indicator lights for the Stabilitrak, the Traction Control, and the Check Engine Light is on. There is a service bulletin for this issue that only addresses the 2008-2011 model years, my vehicle is a 2012 and thus not included in the current bulletin and should be added to the covered vehicle list. #11-06-04-007B : Diagnosis and Repair - Malfunction Indicator Lamp (MIL) Illuminated, Reduced Power Message Displayed, DTC P2135 Set - (April 16, 2012)
Engine & cooling
2012 Chevrolet Avalanche Engine problems
Owners have filed 3 complaints about the 2012 Chevrolet Avalanche's engine & cooling with NHTSA - 6% of all its complaints, most recently on September 11, 2022. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.
- Complaints
- 3
- Recalls
- 0
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
Engine complaints
My 2012 chevrolet avalanche 5.3L engine has started a oil consumption loss. There was a service bulletin issued oct. 30Th 2013 to correct this problem. It does not fix the problem! What I've read is that where the cylinders deactivate to help fuel economy after time those pistons get damaged from not having fuel or fire on them and itdamages pistons and causes oil consumption. In the past few days I have found out that there are 5 people I know with the same issue. Looking on line there appears to be class action...
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law suits all across the country on this issue. Gm/chevrolet know they have a problem but refuse to take care of this problem. There is no recall on this and I'm sure never will be because it happens when the engines reach higher mileage. I have all my maintenance records on my truck and had no intention of trading it, but now the motor will have to be rebuilt or replace.
The engine fails to start some times, this happen 2 to 3 time a month the engine crank ok volt on battery drops to 10.5 Volts, installed new battery, no help. After setting for 15 to 20 min. It will start, no check eng. Lite no code set in computer. Chev dealer said cannot help unless it happen at the dealership.I cannot check for spark because the spark plug are out of sight, the fuel pump runs ok. I need help. *Tr
Chevrolet Avalanche engine complaints by year
Avalanche engine problems, every yearSource: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data