Table 1 shows twelve common power train related problems of the 2015 GMC Sierra 1500. The number one most common problem is related to the power train (75 problems). The second most common problem is related to the automatic transmission torque converter (three problems).
For no apparent reason the truck goes into “low power mode” and gives off code p2138 often happens around 30-35 mph. Have had it happen to me also around 45 mph also. I have replaced sensors and parts to which a month or so goes by and it happens again. Read details...
The contact owns a 2015 GMC Sierra 1500. The contact stated while driving 75 mph, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. Additionally, the contact stated that there was an abnormal squeaking sound coming from the vehicle. Read details...
I purchased my truck (15 GMC sierra z71 4x4) with around 122,000 miles on it. I would be owner #2. Truck ran great. Around 150,000 miles I noticed my truck's transmission start to jerk while accelerating from gear to gear. No engine light ever appeared. Problem stopped. Read details...