While the vehicle is in drive it loses propulsion without notice. The vehicle stays in drive. The vehicles RPM increase as your foot is on the accelerator but the vehicle doesn't continue to move. The only way to regain propulsion is to completely shut the vehicle off and then start up again.

- Elizabeth, PA, USA

Continue to experience radio resetting (completely shutting down and resetting giving you the GMC logo) as you drive down the road, with phone connected with usb and without. Continue to experience usb not producing enough power to my phone to run waze from the usb port under the radio. Phone calls will fade in and out between the radio and the phone call...being connected via bluetooth to the truck. Continue not being able to answer the calls via bluetooth. Truck has been into 2 different dealerships....both have "reset" the system...but it continues to do the same things...or something new every week. Parts have been ordered to replace usb port...still waiting. Bought the car new....been ongoing...been in the dealerships 10-15 times now. No solution

- Roachdale, IN, USA

Driving on a downslope heading North on 65 going into Tennessee from Alabama I experienced a loss of power system lights went off along with gauges going off and on. At which time stabiatrak and transmission lights came on saying to pull over immediately.we did so called GM onstar where they told us we would experience a loss in power but could travel onward. We chose to get towed, however due to the holiday we had difficulties getting a tow and were forced to drive home 90 miles away. The problem did not present itself again on the drive home. We took it to a GMC dealer in vestavia hills they pulled off the codes but had no reason for the issue nor were they able to get service bulletins from GM on the issue. I documented the findings went home and a later on 11/23/18 the problem occurred at about 130 miles from the first incident. This time it happened going up a hill and giving the car gas did nothing to get me up the very small grade. I had to put it in reverse and get a running start at the hill in order to make it home. I called GM again and requested a tow to a second dealer in trussville, al they were unable to even see it until Monday 11/26/18. I am very fearful that if we have to drive it again that I may not be as lucky.

- Birmingham, AL, USA

Vehicle was in service for 9 days for- (as identified on the information system) transmission, stabilitrak, parking assist and a message "the vehicle was unsafe to drive". on Friday, May 12, 2018 I picked up vehicle from jim causley after repair and replacement as indicated on the service report. I drove no more that 15 miles and the vehicle jerked, stalled, made loud noises and smelled of something burning. The vehicle went from 35mph to 5mph. The vehicle would not accelerate beyond 10-15mph. I had to have the vehicle towed to my residence. On Tuesday, May 15, 2018 I had it towed to jim causley. This is a continuation of the first complaint #11091743.

- Detroit, MI, USA

Addition to report 11091743. The vehicle was serviced for warning of transmission, stabilitrak, parking assist and notification that vehicle was unsafe to drive (May 2, 2018). Vehicle picked up (May 11, 2018) after series of repairs. I drove approximately 15 miles and the vehicle began jerking and stalling. At the final jerk the vehicle went from 35 mph to 5mph and would not accellerate. There were several loud noises and a burning smell. The vehicle had to be towed to my residence. When I picked up the vehicle from jim causley I asked if it was safe to drive. I received no response. I asked about the repairs and I was told there were some loose wires and minor adjustments. Once again my life was put in jeopardy because of a vehicle failing to operate while in heavy traffic.

- Detroit, MI, USA

Stopped at a light to make a left turn. The vehicle jerked, then shifted from drive to park. The info system gave me the following messages: Transmission, stabilitrak and parking assist. I turned the vehicle off and tried to restart it. I got a message that said "this vehicle is unsafe to drive.:" at this time non of the gear options were available. A roseville, Michigan police officer had to position herself behind me becsuse cars were going around me on both sides (my four way blinkers were on).the tow truck driver was unable to put the vehicle in neutral, thus my vehicle had to be dragged onto the truck. At the dealer they were unable to change gears and once again my vehicle was dragged off the tow truck prior to this incident. I reported to the dealer the rocky, bouncy, pulling ride which made the vehicle hard to control. I also reported the jerking while driving and in the auto stop. Despite all of my verbalizations of the concerns, they, wrote the work orders in dealer language and only addressed what they wanted.

- Detroit, MI, USA

The first time while driving at 60 mph, the vehicle instrument panel warning lights activated and gauges fluctuated followed by acceleration, braking and steering movement. Then the information panel displayed stabilitrak unavailable, collision warning unavailable, lane change alert unavailable and transmission service. The car then started shifting erratically. The 2nd time same situation while driving 30-40 mph.

- O'fallon, MO, USA