general problems of the 2023 GMC Sierra 1500 - part 2

I was driving on the oklahoma turnpike @ 75mph when the engine locked up in traffic. I coasted to the side of the road and called roadside assistance. The truck is currently at vance GMC in miami, ok getting the engine replaced.

On the interstate the truck said to press engine start and everythig was dead, I was almost hit several times trying to get it from the passing lane to the emergency lane. I towed it to my dealer who said the engine suffered catastrophic failure due to a recall on the 6. 2 engine. No warning lamps or any indicators were given. All service records are in order along with a recall inspection related to my issue.

I have a 2013 GMC 1500 with the 6. 2l engine. There was a recall on my engine when I purchased it used with 21k on the odometer. I took it in for the 5k oil change at 26k miles and the "performed the recall oil change" replacing the oil with 0w40 oil saying this should "fix the recall". At 32k miles my engine blew up on christmas eve 12/24/2025 and left my son and I stranded on the side of the road. I had the truck towed to the GMC dealer and they are now in the process of replacing the entire engine. I have now been without my truck for over a month because several other owners with 6. 2l engines are having the same issue.

After 5000 miles between oil changes, the engine had burned enough oil to have no oil in the dipstick. This equals at least 3 quarts oil if a 7 quart capacity. The dealership states this truck burns a quart to quart and a half every 2000 miles. This seems like an excess amount of oil consumption.

Cylinder failed right after I had the 6. 2 engine recalled. Failed on a 1200 mile daily trip through winter conditions in utah.

I own a 2023 GMC Sierra 1500 (black widow edition). The truck has only 23000 miles on it. I experienced an idle engine warning mid driving, and oil hot warning. It did shutdown the engine of the vehicle and as I was trying to merge safely to the right lane and right side of the way the steering became very hard which put me and 3 of my employees in danger. After parking safely, I did call onstar and they ended up towing the truck while we waited for hours in the dark and cold temperature to get a ride. State police and mdot did not show up even though we called them multiple times. This was a nightmare.

While stopped at traffic signal, vehicle suddenly stops running. Restarted vehicle and had to feather the throttle to keep it running. Engine began to run normally so I continued driving. When I reached approximately 35 mph, a loud rattling noise started and experienced a severe loss of power. Fortunately I was able to safely get out of the traffic lanes to the side of the roadway. I inspected the vehicle, no oil leaks, no coolant or transmission leaks. No warning indicators on the dash. Oil pressure normal. Temperature normal. I limped the vehicle home to be towed to dealer. Approximately 2 months ago this vehicle passed the recall inspection and had the recommended oil change. There was a previous warranty repair performed on a stuck exhaust valve in the #8 cylinder. The vehicle was also brought in to the dealer for suddenly cutting off while driving approximately 50 mph. Again I was able to pull off safely. The vehicle then started normally and I proceeded to drive. The dealer inspected the vehicle and could not replicate the issue, and found no electrical or mechanical trouble codes. There were absolutely no warning indications prior to each of these events.

Ecm - engine system code p0700 and tcm - transmission system code u0073. The truck went in to first gear and wouldn't go over 5 mph on the highway. The dealer is saying it can't be replicated but it's happened multiple times to the vehicle in the past week. The truck was taken to the dealership and inspected but they claim nothing is wrong. The check engine light came on as well as the aforementioned codes.

The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the vehicle shuddered while in first gear. The contact stated that the transmission sounded strained and shifted rough before slamming into gear. The vehicle was taken to the dealer; however, no cause for the failure was found. The dealer diagnosed the vehicle and determined that the vehicle was oversteering while turning to the right. The dealer replaced the valve and torque converter. On another occasion, while driving at an undisclosed speed, the vehicle accelerated independently. Most recently, a burned transmission fluid odor was coming from the front of the vehicle and entered the cabin through the a/c vents. There oil stains found on the ground on several occasions. The vehicle was taken back to the dealer and the valve body was replaced, the fluid levels were checked, and the transmission filter was replaced; however, the failure persisted. The contact called the dealer, and the dealer towed the vehicle. The dealer determined that the oil cap was loose. The vehicle remained at the dealer unrepaired. The manufacturer was made aware of the failure, and a case was opened. The failure mileage was 8,496.

The check engine light is illuminated. Diagnostic information from the onstar system indicates a fault within the engine cooling system. The engine cooling fan remains engaged continuously, suggesting a possible malfunction with the cooling system components or related sensors.

The contact owns a 2023 GMC Sierra 1500. The contact received notification of NHTSA campaign number: 25v27400 (engine and engine cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted and initially confirmed that parts were not yet available. The contact received notification that the parts for the recall repair were available. Upon arrival to the dealer, the contact was informed that the recall repair would be an oil change with thicker, higher viscosity oil. The contact expressed concerns that the failure might occur because the engine was not replaced. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

In the past few months this truck has been worked on twice. First was the valve body and now it is the coolant control valve. These things have caused my truck to completely slow down or shut down without warning.

The contact owns a 2023 GMC Sierra 1500. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated and the vehicle started running abnormally rough, promptly the contact to discontinue driving the vehicle. The message “service traction control” was displayed, and the abs warning light was illuminated. The vehicle was taken to the dealer, but it had not yet been diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 20,000.

See attached document for complaint.

To all concerned, I scheduled my vehicle for routine maintenance, but more importantly, I scheduled my check engine light indicator logo to be activated. Following the maintenance and testing of my engine, the dealership informed me that my vehicle passed. For that matter, they put me right back on the road for the check engine light to come on the following morning, and it's still on and off as it pleases. During these very dangerous and extreme manmade and natural disasters GMC seems to think I will have peace of mind because they added an additional 5000 miles to the warranty. What good is that gonna do when for: 1. We arent safe… every scenario you can imagine. 2. Can't travel anywhere in confidence in my vehicle, because they hope I don't breakdown. 3. They gamble with my and other safe driver lives trying to save money. Our vehicles are two-ton vessels capable of creating all kinds of mess. 4. I bet if I don't pay GMC coming for their property so expect the same in return. 5. You can't make this right because my vehicle just tg the dealership two days ago. Please get to the bottom of this a save me the time, aggregation, and hassle of someone trying to convince me I'm fine… well im not. Thank you [xxx] [xxx] information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

On August 17, 2025 while traveling north on the garden state parkway in new jersey, my vehicle suffered a catastrophic engine failure without warning. Fortunately, I was able to get off the roadway without incident. This is the second time this has occurred in the past 4 months. (1st NHTSA complaint 04/18/2025 #11655375) this second engine failure occurred with less than 6000 miles, and only about 3 months of driving. As of this report, the vehicle has not been repaired.

The contact owns a 2023 GMC Sierra 1500. The contact received notification of NHTSA campaign number: 25v27400 (engine and engine cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted several times. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

The contact owns a 2023 GMC Sierra 1500. The contact stated that while his wife was driving approximately 45 mph, the vehicle suddenly lost motive power, decelerated, and shut off unintendedly. The vehicle was later restarted and driven to the residence before stalling a second time. The vehicle failed to restart and was towed to the local dealer. The dealer diagnosed the vehicle and determined that the fuel module was faulty and needed to be replaced. The contact was informed that the part was on back order. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 9,000.

Accelerating on highway and felt like the engine stalled. Coasted to a stop and the engine would not restart. There was no way to get the truck into neutral so it had to be drug onto a flat bed tow truck.

50000 miles. Getting a p1098 code for a cooling issue. Truck goes into limp mode without warning and will overheat.

The contact owns a 2023 GMC Sierra 1500. The contact received notification of NHTSA campaign number: 25v274000 (engine and engine cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

The contact owns a 2023 GMC Sierra 1500. The contact received notification of NHTSA campaign number: 25v274000 (engine and engine cooling); however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.

The contact leased a 2023 GMC Sierra 1500. The contact received notification of NHTSA campaign number: 25v274000 (engine and engine cooling). The contact stated while driving approximately 35 mph, the vehicle experienced reduced motive power. Several unknown warning lights were illuminated. The contact stated that the failure had recurred on another occasion. The vehicle was taken to the dealer, where it was diagnosed and determined that the engine needed to be replaced; however, the part to do the recall repair was not yet available. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 26,000.

Per my dealership, there is chaffing in the main wiring harness of the vehicle and the entire harness needs to be replaced. On recall n222391510, for sierra's of the same year, the harness had to be replaced as well.

Driving on the highway under normal driving condition, my check engine light came on and said service transmission. This then put the truck into "limp mode" and I was stuck going 60mph in a 75mph zone. Dealership scanned and found that the coolant sensor control flow valve is faulty. This part is in such demand for these vehicles that it is unknown when the part will be in.

Engine code p1098 indicating failure of cooling control valve (ccv) at 2. 5 years old, 49k miles. Display on dash indicates acceleration reduced warning, fan in engine bay running at high level while actual temperature reads normal.

The recall is showing complete in may 2025 but oil and filter plus new oil cap not changed or replaced. I bought the truck on June 25, 2025 from enterprise car sales and was not informed about the engine of this truck was on a recall lised but have been completed. I feel unsafe driving this truck now.

While traveling at 45 mph, vehicle starting jerking violently and lost most power. The engine began rattling very bad and extreme noises came from engine compartment.

After 1-year to date of the first time the engine seized up in 2024 and was replaced with another motor. Then around father's day weekend I went to accelerate on highway and it studder and service symbols for traction control and esc service popped up. It shook and vibrated while running. The same dealership shop that replaced it last year stated that rods and such have failed. After not resetting the mileage on the dash board for the miles on the truck or extending the warranty on the at4 2023 model I was skeptical as it ran rough to begin with. I was told that everything is as should be when talking to them in Jan/Feb 2025. Now we're here at the shop again. The mechanic at the dealership the first time stated that he mentioned to the manufacturer that the issues he is seeing is tied to the motor and oil transferring and he is not surprised there are the issues but the manufacturer shrugged it off. So, after having the vehicle in my possession for 2 years, I'm having the motor replaced twice in one calendar year and without a vehicle combined and counting 2. 5+ months. GMC knew about the issues and decided not to address them. I loved the truck but there were too many issues and it was my first GMC and will be my last. I was a big chevy guy most of my life. . Now I'm considering a ram. .

The coolant control valve needs to be replaced. My estimated time to get the truck back is 1-2months. This appears to be a common problem. And its not covered under warranty.

The engine failed while pulling my camper over a mountain pass. This resulted in me being stranded along side the highway with the vehicle impeding traffic. The area the vehicle broke down had no cell phone service to call for help. This engine was a replacement engine and failed with only 20,000 miles. This vehicle is effected by the recent recall the gm issued on all 6. 2l engines. The were not indications the engine was going to fail.

The contact owns a 2023 GMC Sierra 1500. The contact received notification of NHTSA campaign number: 25v274000 (engine and engine cooling); however, the part to do the recall repair was not yet available. The local dealer was contacted and confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

While driving vehicle I received a message on the dashboard, "reduced acceleration, drive with caution" and then the check engine light came on. Took the vehicle to local autozone to get code read and was told "p1028" was the error code. Schedule an appointment with local GMC dealership for diagnosis. After three days dealership told me that the technician has diagnosed my truck with faulty "engine coolant control valve". I was told the part is backordered with no eta. Asked for a loaner vehicle while truck is waiting repair and was told there was nothing available. When asked about what I should do transportation, dealership told me I could come pick up the truck and drive it until part arrived but I would need to watch for further engine issues as the engine could overheat. How do you tell a customer to just continue driving a vehicle with a known issue. Additional fear is what if additional harm is caused and because I drove the vehicle with a known issue they won't cover the cost of repair? this all seems fishy and unfair as a consumer.

On June 1 my 2023 GMC Sierra 1500 6. 2 began making a grinding and knocking sound on the engine no previous warning or symptoms. I believe it's a problem related to the engine recall so on June 2nd I took my vehicle to the dealership brown Chevrolet of eagle pass TX where I was told that it would be about two weeks for them to get to it.

The engine cooling control valve malfunctioned while driving and limited acceleration making it hard to move out of the way of driving traffic. The dealer has confirmed all is this and inspected and they are unable to get the part to replace it because of a national bank order. No warning lights until part failure.