Adaptive Cruise Control Problems of GMC Sierra 1500 - part 2

When using adaptive cruise the brakes have engaged aggressively without cause. This has happened several times prior to my discontinuing the use of this option. I have not had it in for service yet (we just returned from vacation).

See all problems of the 2021 GMC Sierra 1500 🔎.

The engine failed at 5100 miles and is currently being repaired by the dealership. I requested a new car replacement.

See all problems of the 2020 GMC Sierra 1500 🔎.

Issue 1: front left sensor(s), after a rain, car wash and now after an oil change, continuously vibrates the drivers seat and the red light warning stays lite indicating that an obstacle is located near the left front of the truck. This has happened on several occasions and after a time both indicator stop. Issue 2: when traveling on a freeway, twice now, the cruise control suddenly disengaged or decreased mileage, as if it had detected a vehicle in front of us. There was no vehicle within a quarter mile of us front or back, nor any vehicles on the side. No debris in the road either. Usually when the adaptive cruise is set and detects something in front the icons on the dash turn orange and starts to flash. That didn't happen, rather the cruise icon changed to blue in color and the truck slowed. This I would consider a safety risk. Both instances (December 2020 and April 2021) have been reported to a dealership and noted in a file. When the customer care person attempted to get malfunction codes, nothing appeared to be wrong with the vehicle.

On or about 10-14-2020 I had got a call from my niece that she was at a parking lot and the truck didn't want to run the same. She was passing a intersection when she heard a very loud pop noise and a very scary noise coming from the engine. The noise did shack her some but when she notices the truck had lost its power she was more scare that she was going to get hit by a other car came out to be the lifters and camshaft . Where they been having class actsions law suits with gm motors for the same problem with other GMC year from 2009-2015 5. 3 vortex engins and GMC knew about it before the sold the very first truck its a $10,000. 00 dallors repair and with the bank finance I will be paying more then 25,000. 00 after cost and this truck blue book its at 15,000. 00 last time I check it so its not worth putting so much more money for that year of truck. I had tryed to work things out with the dealership as well with gm motors and had no luck or even a call back from both sides. I ask that if you can investigate this matter some more I will gladly appreciate it. Thank you for your time.

See all problems of the 2013 GMC Sierra 1500 🔎.