2021 Chevrolet Tahoe

On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001.  This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement. General Motors (GM) issued Recall 25V-274 to address concerns of engine failure in the L87 engines produced between March 1, 2021 and May 31, 2024. GM cited the root cause as a supplier manufacturing and quality issue. GM’s recall remedy for Recall 25V-274 consisted of two different repairs, either an oil viscosity change or an engine replacement, based on the results of the remedy inspection procedure. ODI continues to receive reports of engine failures after the completion of the recall remedy. To date, ODI has received 499 complaints alleging post-remedy engine failure in vehicles subject to Recall 25V-274, 473 of which involved an oil viscosity change and 26 a complete engine replacement. Additionally, ODI has received 191 reports of L87 engine failures in engines produced after the production period cited in Recall 25V-274. GM reported receiving 6,953 complaints of post-remedy engine failure. ODI is opening this Engineering Analysisto continue investigating complaints of post-remedy engine failure. ODI is expanding the scope of this Investigation to include engines produced after the production period cited in the recall. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

The Office of Defects Investigation (ODI) has received 1,157 reports of engine bearing failure failures in the L87 6.2L engine produced by General Motors (GM). Of the 1,157 reports received, 173 are outside of the scope of recall 25V-274. These engines are installed in Model Years (MY) 2019–2024 Chevrolet Silverado 1500 and GMC Sierra 1500, and 2021-2024MY Chevrolet Suburban and Tahoe, GMC Yukon/Yukon XL, and Cadillac Escalade/Escalade ESV vehicles. The subject engine failures were investigated as part of a Preliminary Evaluation (PE25001).  GM determined that these engine failures were due to multiple supplier manufacturing and quality issues. GM issued recall 25V-274 to address the supplier manufacturing and quality issues produced between March 1, 2021, and May 31, 2024. Based on the issuance of recall 25V-274, NHTSA has closed PE25001. ODI continues to receive a significant number of reports of engine failure in vehicles outside the scope of 25V-274.  This presents a potential safety risk that warrants further investigation.  ODI is opening this Engineering Analysis (EA) to further evaluate the scope and severity of the potential problem and to fully assess the potential safety-related issues of vehicles built outside the recall scope. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

On January 16, 2026, the Office of Defects Investigation (ODI) opened Recall Query RQ26001.  This investigation was opened to assess the remedy effectiveness of Recall 25V-274. ODI has received complaints alleging engine failure in vehicles after the recall remedy had been completed, whether that remedy involved an oil viscosity change or a complete engine replacement. General Motors (GM) issued Recall 25V-274 to address concerns of engine failure in the L87 engines produced between March 1, 2021 and May 31, 2024. GM cited the root cause as a supplier manufacturing and quality issue. GM’s recall remedy for Recall 25V-274 consisted of two different repairs, either an oil viscosity change or an engine replacement, based on the results of the remedy inspection procedure. ODI continues to receive reports of engine failures after the completion of the recall remedy. To date, ODI has received 499 complaints alleging post-remedy engine failure in vehicles subject to Recall 25V-274, 473 of which involved an oil viscosity change and 26 a complete engine replacement. GM reported receiving 6,953 complaints of post-remedy engine failure. ODI will close this RQ and continue to investigate complaints of post-remedy engine failure for Recall 25V-274 as part of an Engineering Analysis (EA26005). To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov.

On January 16, 2025, the Office of Defects Investigation (ODI) opened Preliminary Evaluation PE25001 after receiving complaints and field reports concerning engine failures in MY2019-2024 GM’s full-size truck and SUV T1XX platform equipped with the L87 6.2L V8 engine. These complainants alleged engine bearing failures resulting in knocking and growling noises from the engine’s bottom end and in some cases more severe consequences such as broken connecting rods leading to engine damage, or engine failure. If the engine fails during vehicle operation, the vehicle will lose propulsion, increasing the risk of a crash. On April 24, 2025, GM issued recall 25V-274 to address the concern with L87 engines produced between March 1, 2021, and May 31, 2024.  GM cited the root cause as a supplier manufacturing and quality issues. GM’s  recall remedy will be either an oil change to an oil with a different viscosity or engine replacement depending on the results of the remedy inspection procedure. To date, ODI has received 1,157 allegations of engine bearing failure. GM submitted 55,464 reports in total, with 29,752 unique VINs. ODI continues to receive allegations of L87 engine failures which fall outside of the scope of recall 25V-274. Based on GM’s recall, ODI will close this PE. NHTSA will continue to investigate complaints of engine failure outside the scope of recall 25V-274 as part ofEngineering Analysis (EA25007). To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to NHTSA.gov.

I have multiple problems with the seat belt I have to take the truck 3 times and now I have a problems with the screen I have a mensage ( update failed return to the dealer so I want Talk with someone to give me an answer why I have all this problems

NHTSA ID

11776553

Incident

Oct 23, 2026

The engine lifters have failed twice in our 2021 Chevy Tahoe. The first time was at 13k miles and the second time happened at 100k miles. Both times the failures put my family in an unsafe situation and almost led to a multicar accident. This is a known issue that multiple people report online in the 2021-2024 Chevy Tahoe. The first time the lifters went out, I had just purchased the car. I only had 13k miles on the vehicle when it began shaking and jumping while at a stop. As I drove further the car began violently shaking and making backfire noises. I had to stop the vehicle in the road, as there was no pull off. We had the vehicle towed to the dealership and they replaced them under warranty. They said the lifters had gone out and they resolved the issue. I asked at that time if this was normal and if it could happen again. I was told it was not normal and it was not something that should be happening on a new vehicle, but they had fixed the issue and felt comfortable that it was resolved. The second time happened just a couple days ago. There was no warning or lights that came on before the incident. My family was in the fast lanes on I-77, going about 70 mph, and the car began misfiring. It was making noises that grew loud and then the car began violently shaking. We were forced to pull off the interstate abruptly. This put us in an extremely unsafe situation. The car is only at about 100k miles and 5 years old. We had the car towed to a Chevy dealership and were told the lifters went out again. This time damaging the cam shaft as well. It is a $6,600 repair, as the car is out of warranty now. This issue should not be happening, especially not multiple times, on a car that is only 5 years old. I believe there is a defect. When there are no warning lights that alert you to a potential issue, this causes an extremely unsafe situation for drivers, passengers, and surrounding vehicles.

NHTSA ID

11775567

Incident

Nov 1, 2026

Engine failure at2000miles, then at 80000

NHTSA ID

11775216

Incident

Oct 20, 2025

Fuel pump control module failed at under 60k miles. No parts in stock and was told by dealer, no parts anytime soon. This is unacceptable, especially since this is a known problem. A rental car should be provided as expected wait time is now going on two weeks.

NHTSA ID

11774400

Incident

Oct 23, 2026

Driving on the highway when all lights lit up on the dashboard. Car slowed down immediately following alert notifications. Towed to dealer. Was told I needed Camshaft and both banks of lifters all head bolts and head gaskets (W) [Other]: Camshaft actuator and bolt and chain tensioner

NHTSA ID

11774212

Incident

Aug 27, 2026

While driving down interstate at approx. 55-65mph, vehicle "sputtered" and shut off while driving. Vehicle would crank but not start. After sitting approx. 10 mins, was able to restart and drive approx. one mile or less before "sputter" and vehicle died, followed by another crank no start. No check engine lights came on. Vehicle was in roadway in very dangerous location with blind curve requiring Police to be called in fear of my safety, since vehicle was in roadway, I was afraid for my children's safety as there were in car seats in the vehicle at time of failure. I was also concerned about my safety as well as other motorists safety. I was scared that I was going to get hit by another vehicle since my vehicle died in the roadway in a curve. There was an increased probability of injury or death from the faulty part on this vehicle. Police were on scene to assist with traffic, however no report was made, vehicle was disabled. Vehicle had to be towed to residence. CEL came on after approx 3rd start attempt. Believe issue to be Electronic Fuel Control Module which is common with this vehicle year/make/model. However in contacting the dealer in which I purchased Tahoe, they state that this particular VIN has no open recalls, however it matches description on recall N252516900 Fuel Pump Power Control Module. Vehicle is not yet repaired, it has not been inspected, and faulty part is still on the vehicle, vehicle and part are available for inspection.

NHTSA ID

11773913

Incident

Oct 22, 2026

The contact owns a 2021 Chevrolet Tahoe. While the contact’s wife was driving 55 MPH, the vehicle unexpectedly started losing automotive power before the vehicle stalled. The driver was able to safely guide the vehicle to the shoulder of the highway. The vehicle was towed to an independent mechanic, where it was diagnosed with a fuel pump power control module failure and the vehicle was repaired. The contact associated the failure with NHTSA Campaign Number: 21V739000 (Fuel System, Gasoline); however, the VIN was not included in the recall. The dealer was contacted and stated that there was no recall associated with the VIN. The manufacturer was contacted by phone and made aware of the failure. The failure mileage was approximately 96,202.

NHTSA ID

11773068

Incident

Oct 15, 2026

Mileage

96,202 mi

While traveling at highway speeds, the vehicle experienced an instantaneous, simultaneous, and total failure of both the electronic eBoost braking system and the electronic power steering assist. The dashboard flashed multiple critical system malfunction notifications with zero prior warning. When attempting to slow down, the brake pedal sank completely to the floor with zero mechanical resistance and provided absolutely no braking response. Primary control of the heavy SUV was lost, forcing a dangerous maneuver across three highway lanes to avoid a high-speed collision. The vehicle is currently at a dealership due to a Fuel Pump Power Control Module Recall. Because this module interfaces with the high-speed electronic data network (CAN bus), its failure mode appears linked directly to the catastrophic communication drop that disabled the eBoost brakes and steering. This failure aligns with the mechanical faults documented under federal safety recalls 21V-455 and 21V-579, as well as the active NHTSA Engineering Analysis EA26006 investigating GM eBoost system failures. The defect completely stripped the vehicle of its primary safety functions without warning.

NHTSA ID

11772617

Incident

Oct 18, 2026

This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble Codes B3055, B3

This Preliminary Information provides diagnostic tips and guidance for situations where key fobs cannot be learned or programmed successfully.

Beginning with 2026 model year production, the floor console/armrest lamp design was changed by removing the tilt-switch ball. As a result, the lamp remains illuminated when the floor console compartment lid is closed. The BCM turns the lamp off after the ignition is switched off to prevent battery rundown. This PI is to inform dealers of the change in the lamp and operation of the lamp following repairs.

This preliminary PI was created to advise techniians in the field that they will not be able to perform a GDS automated bleed with the scan tool dues to a issue with the software in the scan tool

This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.

This preliminary information communicates diagnostic tips for air leveling suspension system.