2023 GMC Sierra 1500 fuel, hybrid & EV propulsion problems

Related recalls

No recalls on file.

What owners say

1. Filed Sep 19, 2026OHEngineFuel, Hybrid & EV Propulsion

   Addendum to previous submission # 11760415. At 15,033 mileage again multiple codes present along with a rough running engine. Dealership service dept confirmed on 9/17/2026 verification of 10 active codes , 2 pending codes triggering check engine light. Onstar notification as well of engine issue. Prominently codes P0016 & P0340 lead the list. PICO testing was stated to have failed two out of 3 parameters. Officially stated now as an engine defect which is being directed to…

   NHTSA complaint #11765460 · source
2. Filed Sep 1, 2026CAEngineFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   I am reaching out to NHTSA due to a vehicle that I believe will get me and/or my family in a major accident and cause serious injury or death. The vehicle that I had purchased in 07/08/2025 had a clean history report and was bought at 54,587 miles. It started having issues 8,563 miles later (odometer reading 63,150 ) on a trip that was 400 miles round trip. I was driving the vehicle on a highway at 65 mph and i felt a knocking vibration in the pedal it was not long before i…

   NHTSA complaint #11761466 · source
3. Filed Aug 31, 2026OHFuel, Hybrid & EV Propulsion

   purge pump failing confirmed at dealership this part has been recalled on same truck but not specifically this vin . I was told I need to report it to you guys so that it could ge added.

   NHTSA complaint #11760943 · source
4. Filed Aug 28, 2026OHElectrical SystemEngineFuel, Hybrid & EV Propulsion

   13 unresolved problem codes relating to hard engine starting,rough engine running,vehicle initiating safe mode operation, upon a highway trip. P0016 engine code detected and Onstar messaged for immediate service. No resolution at dealership , after resetting codes an additional 9 are active / pending at 2nd dealership visit. Abnormal engine operation since , dealership advises a hard failure has to occur before a resolution can be instituted. Similar advice from GMC direct…

   NHTSA complaint #11760415 · source
5. Filed Aug 23, 2026KYEngineFuel, Hybrid & EV Propulsion

   Driving on I-75 with cruise control engages. Vehicle began decelerating. Pulled over onto emergency lane. Engine idled roughly. Shut down. Attempted one restart unsuccessfully.

   NHTSA complaint #11758867 · source
6. Filed Aug 23, 2026KYEngineFuel, Hybrid & EV Propulsion

   Sudden loss of propulsion while driving on I-75 with cruise control engaged. Vehicle began to decelerate. Pulled off onto emergency lane. Engine was idle-ing roughly. Would not increase rev when gas pedal pressed. Shut down. Tried one restart. Unsuccessful.

   NHTSA complaint #11758858 · source
7. Filed Aug 21, 2026GAEngineFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   I own a 2023 GMC Sierra 1500 Denali Ultimate equipped with the 6.2L L87 V8 engine. The vehicle previously experienced an engine failure that resulted in the complete replacement of the 6.2L engine by an authorized GMC dealership. The replacement engine was installed at approximately 76,316 miles. After approximately 1,000 miles of driving with the replacement engine, at approximately 77,354 miles, the vehicle displayed a check-engine/service warning and experienced abnormal…

   NHTSA complaint #11758664 · source
8. Filed Aug 14, 2026FLFuel, Hybrid & EV Propulsion

   The fuel pump control module went bad and the vehicle shut off while driving. The vehicle is only 3 years old. Everyone I know with a GM truck or SUV has had the same issue and the dealer service writer even told me they get at least 6 vehicles with the same issue per week. There is already a recall for GM SUV's for 2021-22 model years but not for anything else even though many other vehicles have the same issue. They replaced the module under warranty but it is all but…

   NHTSA complaint #11756888 · source
9. Filed Aug 7, 2026CAEngineFuel, Hybrid & EV Propulsion

   - vehicle started misfiring, ECM, valve timing code, throttle system code, data system, gateway, module,. Vehicle is available and currently at the GMC dealership for continued diagnostic. -this happened on the freeway and out of nowhere the vehicle started shaking, rough, losing power and acceleration, I had to cut someone off on the freeway just to get over to the right shoulder and turned off the vehicle called a tow truck and haven’t been able to use the vehicle since.…

   NHTSA complaint #11755389 · source
10. Filed Jun 26, 2026TXEngineFuel, Hybrid & EV PropulsionTransmission & Drivetrain

    While traveling at highway speed during rush hour commute, the vehicle lost engine power and stalled. While coasting, I tried to restart the engine several times without success. Before coming to a stop, I attempted to get to the shoulder safely. Unfortunately, a portion of the vehicle was left partially in the lane and on the shoulder. Once I was completely stopped, I tried to put the electronic shift control into neutral so I could push the vehicle safely to the shoulder.…

    NHTSA complaint #11746738 · source
11. Filed Jun 18, 2026NCEngineFuel, Hybrid & EV Propulsion

    1. The L87 Engine Loss of Propulsion failed and is available for inspection at the service department at Power Swain Chevrolet dealership, Fayetteville, NC. 2. I, other vehicles, cyclists, and pedestrians were at risk. That vehicle could have come down on the highway, causing a vehicle pileup, which could have caused mass casualties. 3. The problem is known; the service advisor informed me the vehicle's engine needed to be replaced. 4. There were absolutely zero warning…

    NHTSA complaint #11744918 · source
12. Filed May 28, 2026WVEngineFuel, Hybrid & EV PropulsionAcceleration & Cruise Control

    After driving my vehicle for a short period of time I stopped to go shopping. When I returned to my vehicle I started it as usual and the check engine light illuminated. I began driving and within 0.25 miles I received an info enter message that stated my vehicle would have reduced acceleration and to please drive safely. My engine fans became noticeably louder and ran the entire trip home (about 15 minutes). After pulling into my driveway I sat in the vehicle and listen to…

    NHTSA complaint #11740519 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology