2010 Chevrolet Avalanche: sudden loss of power

5 of the 111 complaints about the 2010 Chevrolet Avalanche describe sudden loss of power.

owner complaints: 5
of this car's complaints: 5%
typical mileage: 59,000
recalls: 0

Is there a fix? 217 service bulletins cover this area of the car. See below

Sudden loss of power by model year

2013
1
2012
1
2011
1
2010
5
2008
3
2007
6
2005
3
2004
3
2003
3
2002
6

What owners say

Filed Jun 11, 2020 · Electrical · 107,000 miles · MT

Asking if anyone knows about the 2010 chevy avalanche and the ECM problems that alot of people are having , the check engine light came on and the display showed reduced engine power, service traction control, and service stabilitrak. It would not go in gear , nor would it start , this had happened to the truck three times now , the first time it would not go into gear and it stopped and would not start at all , so I took the negative battery cable off for 30 minute and it fixed it . The second time all the light and buzzers went off , I had lack of power and the check engine light came on and the display showed reduced engine power, service traction control, and service stabilitrak while I was driving it so I took it home , I was lucky that I didn't get in a wreck because it dropped drastically in speed all at once , again I took of the cable , and went to have the diagnostic reading done at a parts store , the next day I drove it to my mechanic and he cleared all the history on it and told me to call when it happens again , it seems that the 2010 avalanche has this problem alot , so today it happened again , for no reason ,

Filed Oct 27, 2015 · Acceleration, Engine · 59,000 miles · LA

Immediately upon starting my truck, while in park, the dashboard indicated the vehicle was in reduced engine power mode and the check engine light came on and the stabilitrak was disabled. The truck would not accelerate properly and would only drive approximately 25 MPH. This is the 5th time this has occurred on this vehicle. The dealership informed me that it is the accelerator pedal positioning sensor, which is the same issue it has had each of the previous 4 times time. It happened 7 times on my 2007 tahoe and each time it was the accelerator pedal positioning sensor (which is the reason we sold it). We are thankful that this time it occurred with the vehicle in park, this has happened in this truck on the highway and that was very dangerous!!

Filed Sep 2, 2014 · Acceleration, Electrical · 46,000 miles · LA

I was on vacation and had my avalanche running while I packed it up to return home. After about 5 minutes of running idle, the check engine light came on and the display showed reduced engine power, service traction control, and service stabilitrak. This had happened to the truck three times before and each time they replaced the accelerator pedal positional sensor. (I also had a 2007 chevrolet tahoe, and after having it repaired seven times for failing sensors and going into reduced engine power while on the highway three times we were forced to sell it). We are very familiar with this issue! However, I was able to locate a dealership in the area and they tested it to find that the throttle body was out, and they replaced the throttle body and the associated sensor. I was relieved to hear that this was a different issue than before and that my problems were fixed. This was not the case. Last week, the engine power reduced again and the truck is now in the shop for the fifth time.

Filed Jul 21, 2014 · Electrical · 50,000 miles · PA

Gm tsb #10047479 this is a well know problem on gm truck and SUV models with power adjustable pedals. The wires rub against the mechanism causing a short and making errors to the computer causing communication problems and loss of power. Repaired at dealership, and charged $300 for labor no parts involved. Not covered because it is a tsb, not a recall. This should be a recall because it could cause an accident from loss of power.

Filed Mar 14, 2014 · Engine · 100,000 miles · NY

After I purchase the car brand new in 2010 under my brother in law's name, I have probably fix the car 5 times for engine power reduce, stabilitrak and all every service lights at the dealer but it had happen again on highway again yesterday, saw that gm recall car on feb 13 for faulty ignition switch for losing power and its happening to chevy avalanche too. One worst case was in 2011 driving to maryland at 12 midnight on highway the speed dropped to 30mph. Took it to dealer next day but it seams I loss power every year and have to fix it every year.