Prior to this incident I had lifter failure on my 2021GMC SierraAt 8464 miles, I was on my way to work and I heard a loud bang and I had to pullover off the highway, my dad had to come all the way out To get the vehicle because it had major engine damage and it was on a holiday so no one would come help me.The vehicle was in the shop for over a week getting these repairs done, upon receiving vehicle it had been a week and I received service four-wheel-drive messages on the dash.Trying to use four-wheel-drive after this was a no-go every time I push the button nothing would happen it would stay in two wheel drive.After this I made an appointment with the dealership for this issue to be fixed, as I was going to get readyTo leave again with the truck having no issues other than what I-??ve stated when I went to go start the truck nothing happened at all every light lit up on the dash and part of me thinks it-??s an electrical issue but the Other part of me thinks the motor is locked up. Also the lights would not shut off when I turn the vehicle off so I-??ll have a dead battery in the morning.

- Holly, MI, USA

THE CONTACT'S FATHER OWNS A 2021 GMC SIERRA 1500. THE CONTACT STATED THAT HER FATHER WAS DRIVING AT AN UNDISCLOSED SPEED, WHEN THE VEHICLE STALLED. THE VEHICLE STALLED THREE TIMES ON THREE SEPARATE OCCASIONS AND WAS TAKEN TO THREE DIFFERENT DEALERS. THE VEHICLE WAS FIRST TOWED TO Bill Kay Buick GMC (2300 Ogden Ave, Downers Grove, IL 60515) AND DIAGNOSED AS BATTERY FAILURE AND REPAIRED HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS THEN TOWED TO Phillips Chevrolet of Lansing (17730 Torrence Ave, Lansing, IL 60438) AND DIAGNOSED THAT THE TRANSMISSION CABLE CAUSED THE FAILURE. THE VEHICLE WAS REPAIRED HOWEVER, THE FAILURE RECURRED AFTER GETTING THE VEHICLE BACK FROM THE DEALER. THE VEHICLE WAS THEN DRIVEN TO Zeigler Buick GMC of Lincolnwood (6900 McCormick Blvd, Lincolnwood, IL 60712) BUT WAS NOT YET DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND A COMPLAINT WAS FILED. THE CONTACT WAS INFORMED THAT THE DEALER WANTED TO REPAIR THE VEHICLE. THE FAILURE MILEAGE WAS 3,000.

- Normal, IL, USA

Transmission shifts hard when shifting up and when downshifting. Vehicle jerks when going speeds <40 after coming off highway at highway speeds >70.

- Laneville, TX, USA