Table 1 shows two common power train related problems of the 2009 GMC Sierra 3500.
| Problem Category | Number of Problems |
|---|---|
| Automatic Transmission problems | |
| Automatic Transmission Control Module problems |
The contact owns a 2008 GMC Sierra 3500. The contact stated that while getting a service inspection at the dealer, they found that there was a transmission line leak. The dealer advised him that the line needed to be replaced and that it was not covered under warranty. The vehicle was repaired. The manufacturer was also contacted and advised him to contact NHTSA and file a complaint. The failure mileage was approximately 62,000.
I drove my wife to the pharmacy and after pulling out of the parking lot onto palmdale road in victorville the truck went into to limp mode. The transmission locked up into park at 25mph almost causing a rear collision behind us. The GMC Sierra 3500hd 2009 came to a screeching stop causing a bit of whiplash to my wife and daughter on board. The tcm transmission control module along with the allison transmission failed causing this close accident. The vehicle is inoperable at this time. This is a dangerous defect.