general problems of the 2015 GMC Sierra

See attached document for complaint.

The contact owns a 2015 GMC Sierra 1500. The contact stated while his daughter was driving at approximately 25 mph the vehicle began to vibrate violently. The contact stated that his daughter reported seeing numerous warning lights were illuminated. The vehicle was stopped and towed to a dealer. The dealer diagnosed and determined that the rods were damaged and in turn had damaged all eight lifters and all needed to be replaced. The vehicle was not repaired. The manufacturer was informed of the failure. The contact had researched online and related the failure to manufacturer technical service bulletin: 20-na-038 (engine). The failure mileage was approximately 43,000.

The contact owns a 2015 GMC Sierra. The contact stated that while driving towing a boat at approximately 60 mph, the vehicle lost fifty percent power. There were no warning lights illuminated. The vehicle was taken to an independent shop, which informed him the engine push rods were bent and the lifter collapsed. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was contacted, who referred him to the dealer. The failure mileage was  approximately 90,000.

Steering electrical assist fightback, driving,turning resulting in no steering-deadly! this can happen at any time while driving. Very dangerous! engine must be shut off and restarted before you can get out of street. Then message reads "lower driver window then raise" before proceeding.

My GMC 2015 diesel durimax truck had the engine light turn on and said emission needs serviced. It proceeded to cut my traveling speed from 75 mph to 65 mph to 55 mph. I made it to denver colorado barely without the truck falling to 4 mph. I went yesterday to have it serviced. They said that they fixed it still under powertrain warranty. I drove away to go back to texas 700 miles of highway home. I drove and the exact same problem happened again. I'm was on a highway at this point with heavy highspeed traffic in the middle of nowhere where the speed limit is 75 mph. My truck speed was reduced by the emission system again from 75 moh to 65 mph to 55 mph. I was almost hit by a big rig truck with my wife in the car. Sometime later were almost side swiped twice, and then it started raining and the sun started to set, and matters went from dangerous to near deadly. We tried to turn the truck around to get back to denver and almost were hit again because with the GMC speed reduction I could not accelerate away from the high speed cars coming at us. GMC shutdowns the car speed purposely to avoid some tiny amount of nox, and put people at risk of being killed on a highway in rainy nightime weather. We finally made it back to denver just 19 miles before the truck speed would have been reduced to 4 mph. We would have to been on that 75 mph highway riding in the right side of the slow lane at 4 mph !!!!! at night in the rain with high speed 18 wheelers going by at 75 to 85 mph. The government and GMC are insane to have designed this, I am bringing it tomorrow to get try to get it fixed again but the ordeal I went thru is still scary as hell, and worried about it getting fixed. We could be killed due to this. I am an engineer dealing with public safety, and I am in shock concerning GMC's and the government over step in this design. Steve brown 409-539-8718.