Two problems related to power train have been reported for the 2008 Chevrolet Avalanche. The most recently reported issues are listed below.
Problems with train mission. I'm a 75 year old driver. Bought Avalanche sly model. Great vehicle and driven easy and is garage kept. Have extended warranty from dealer. Transmission starting to bump as if you could have hiit a speed bump coming out of low into second. Was immediately taken to the dealership. They changed the wiring harness on the transmission. Said it seemed ok. As I picked up vehicle. The first traffic light caught and as I started up at a slow take off it was doing the same problem. Will return to dealership in the morning. Wiring harness fluid and filter change. Total repair to date $596. 00.
I've had my truck for 4 years now and its been in the shop 5 times due to transmission problems. I've gotten the transmission rebuilt 5 times and its still giving me problems. 6/2014- present day.
| Power Train problems | |
| Differential Unit problems | |
| Transmission Slip Out Of Gear problems |