general problems of the 2021 GMC Sierra 1500 - part 2

Can turn vehicle off while in gear (drive specifically). When you let off the brake, the truck acts as if it is in neutral. Discovered in my driveway when accidentally forgot to shift into park when I pulled in and pushed the stop button. Truck turned off, which would only expect if in park (or neutral), let off brake, and it began quickly rolling backwards as if it was in neutral. Fortunately the brakes were working, but had any children been riding a bike on the sidewalk or walking by, my truck may have hit them. Had I been more distracted and not noticed initially, it could have rolled into the road and hit my neighbors truck. This behavior can be reproduced every single time, and I can easily supply video.

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.

While driving, when approaching speed of 40 mph, the engine begins to have dull shutter intermittently as though I am going over pot holes or rumble strips when I am not. Regardless of time or day or weather the truck has performed in this way. I have had it to the dealership twice for the issue. The first time they said they didn’t feel anything and unable to duplicate the problem. The second time, the vehicle was with the dealer for several days trying to determine the other issue it was there for. I requested they again try to recreate the concern. The service assistance asked if I was willing to ride with the technician to see if I could point it out for him. In scheduled a time to do so, when I arrived, the technician was not there. I reside an hour away from the dealership. Making these round trips and getting no where with support or answers. When this happens, I become extremely anxious about the safety of the truck. Also- while 4 x4 is engaged, the truck has significant shutter when going up hill, as though the transmission is going to drop. The entire truck will violently shake.

The contact owns a 2021 GMC Sierra 1500. The contact stated while using the gps, the digital speedometer failed to operate as needed. The contact notified the dealer of the failure and the system was rebooted; however, the failure persisted. The manufacturer was made aware of the failure and a case was opened. The approximate failure mileage was 1,000.

I started my truck this morning, drove it 3 miles, and all of a sudden got an esc warning, parking break warning, and a degraded power steering warning all at one time. My steering wheel started vibrating vigorously, a clanking sound started under the hood somewhere, and none of my safety features worked after. . Cruise control, vehicle collision control, vehicle gap sensors, etc. . The vehicle is currently at the dealer being looked at.

The contact owns a 2021 GMC Sierra 1500. The contact stated while driving at various speeds with the onstar/gps, turn by turn driving directions activated, there was an unknown notification flashing on the instrument panel and radio. The speedometer was obstructed and failed to work as needed. The screen sporadically went blank. While depressing the dismiss button on the steering wheel, the button failed to correct the failure. There were no warning lights illuminated. The vehicle was taken to the local dealer and the system was rebooted; however, the failure recurred. The vehicle was taken back to the local dealer and the contact was informed to turn off the vehicle, open the door, and then restart the vehicle to reboot the vehicle. The vehicle was taken to another local dealer, bill cramer Chevrolet Buick GMC (2251 w 23rd st, panama city, FL 32405) but the vehicle was not diagnosed or repaired. The manufacturer was contacted but no additional assistance was provided. The failure mileage was approximately 10,450.

The contact owns a 2021 GMC Sierra 1500. The contact stated that while operating the vehicle, the dashboard gauges, instrument cluster, and infotainment center malfunctioned and became inoperable. Additionally, while starting the vehicle, there was a loud cranking sound coming from the engine compartment and the vehicle would not immediately start. The vehicle was taken to the local dealer, but the cause of the failure was not yet determined. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 100.

My truck’s battery is dead after sitting for a few days. There is a manufacturing deficit causing parasitic draw. This is a safety issue because it leaves us stranded after parking the vehicle for a few days. The general motors dealership refuses to do it anything about it. They claim it’s normal.

My truck was part of a gm buyback program where gm corporation bought the truck back to fix it around Aug 7th 2023 for engine problems. I am reporting this because I do not believe that gm ever reported this to ntsha. There are also other issues happening at the same time period that should be looked into that may or may not be coincidences. At or before 10,126 miles the truck started having engine lifter and other engine issues. General motors will not tell me exactly what was done other than lifters according to paperwork supplied. It may have had other issues like a spun bearing but it was never disclosed. Can ntsha please look into this and information is found, could I please get the records. I asked for the paperwork of what was done while gm owned and troubleshot all the problems. I was told that information is only available to the original owner and I could not have it. It is very frustrating when general motors corporate use owner’s personal data as a way to hide what was done and not have to disclose required information. I am asking for service records while general motors owned it and the service records they did to fix it. I know that there are many more engine problems that are not documented on the vehicle summary. Gm will not buy back the truck over a few lifter issues. The truck was later fixed and art gamblin motorsv in enumclaw wa, purchased it. I am told it is fixed but have no real paperwork proving this, I was able to purchase an extended warranty just in case. There is also quite a few of battery and electronic issues that do not seem normal with the car as well. The battery was replaced at 10,126 miles at the same time as the engine issues and the battery module was replaced at 29,536 miles. At 29,875 miles and 29,965 some type of communications module and on star module was replaced. This is the around the same time as the truck was having engine issues and was eventually bought back for what is called “engine noise”.

This is the second time I stop at the grocery store for about 15 or 20 min, get back in the car push the start, then the truck keep cranking with no start for about 20 seconds. Then I try second time and it fires up.

Returned home after some shopping. Parked truck in drive way. Approximately 5 minutes after returning home my wife saw truck smoking from under the hood. Within another minute or two there were visible flames coming from the back edge of the hood. We called 911. Within 5 minutes the entire front end of the truck was engulfed in flames. The fire department arrived and put out the fire but the entire front and cab of the truck was destroyed. Fire investigators determined fire started at back of engine compartment near battery. Vehicle was stopped parked in off condition. In my driveway. No mechanical problems were noticed on ride home and there were no panel alerts for problems.

The auto stop feature on my truck is dangerous! there is no way to permanently disable it. When pulling into traffic from a stop, there is a significant delay for the car to restart and get moving! I have almost been in several accidents because of this. Forget the $20 in gas this junk might save someone over a year! it is dangerous.

Started vehicle everything was normal shifted vehicle into drive proceeded forward. While driving vehicles steering seized I was unable two move the steering wheel. It was also very difficult to stop the vehicle brakes were not working properly. Messages came up on to display reading service power steering and briefly imessage about the brakes flashed quickly on the message board. At that point turn the vehicle off after I got it stopped turn it back on same message still unable to turn the steering wheel repeated this several times approximately for fourth time the message cleared and the vehicle was back to normal. This occurred on a city street.

While towing a new 2023 airstream trailer on interstate route 95 in new hampshire my GMC sierra truck driver display flashes a " check trailer wiring" error message. When this message appears all brake function to trailer is lost makeing driving unsafe. The connection sometimes can intermittently and continuously reconnect momentarily and brakes reengage for seconds until they disengage again with repeated "check trailer wiring" error message . Sometimes the brakes just disengage end never reconnect until error codes is cleared by GMC dealership. It's extremely unsafe to pull off exit and have trailer brakes reengage because they jam with high gain because vehicle brakes need to be applied very hard to over compensate for "no" trailer brakes. GMC dealership has identified certain error codes with their computer but no suggested fix!.