2021 Chevrolet Tahoe driver assistance & safety tech problems

Related recalls

No recalls on file.

What owners say

1. Filed Sep 22, 2026CADriver Assistance & Safety TechEngine

   On [XXX], while driving near Mammoth Mountain, California (Highway [XXX]), the vehicle suffered a sudden, severe engine malfunction. The engine began misfiring violently, accompanied by a loud, mechanical clacking noise, and experienced an immediate loss of propulsion power. This mechanical failure left my family—including young children—completely stranded on the side of a mountain highway in a secluded wilderness area with dropping temperatures (39°F) and active local…

   NHTSA complaint #11766224 · source
2. Filed Sep 1, 2026118,000 miMOBrakesDriver Assistance & Safety TechEngine

   The contact owns a 2021 Chevrolet Tahoe. The contact stated that while driving approximately 70 MPH, the message "Service ESC" was displayed, and the check engine, traction control, and Forward Collision Avoidance warning lights were illuminated. The vehicle started shaking and then lost power. The vehicle was pulled over to the side of the road, parked, and then turned off. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure…

   NHTSA complaint #11761231 · source
3. Filed May 11, 202678,026 miINTowedBrakesDriver Assistance & Safety TechEngine

   The contact owns a 2021 Chevrolet Tahoe. The contact stated while driving at an undisclosed speed, the contact stated that several warning lights illuminated. The vehicle was towed to the dealer where it was diagnosed with a failed engine, lane departure modular and the brake master cylinder. The contact was informed that the engine, lane departure modular and the brake master cylinder needed to be replaced. The vehicle was not repaired. The contact was informed that the…

   NHTSA complaint #11737018 · source
4. Filed Apr 12, 2026CADriver Assistance & Safety TechEngineTransmission & Drivetrain

   The component at issue is the engine, which suffered a sudden and catastrophic failure due to unknown causes. At no time prior to this incident were there any warnings, symptoms, or indications of an underlying mechanical defect that would have allowed for preventative action. While operating the vehicle on the highway with my family present, multiple warning indicators activated simultaneously, including a blinking check engine light, traction control light, ESC warning,…

   NHTSA complaint #11730632 · source
5. Filed Mar 7, 2026ARDriver Assistance & Safety TechElectrical SystemEngine

   My truck was driving perfect and I went to pull into a parking lot in Arkansas where I live in long story short it started acting funny trying to idle out and then I heard a knocking noise. It happened twice. Then my service ESV light come on next my motor light come on then my auto for a collision system failure light come on. It’s on the dash anyway my vehicle is not running around. It has hardly no power and I smell something under the hood from time to time burning it’s…

   NHTSA complaint #11722698 · source
6. Filed Feb 11, 2026FLDriver Assistance & Safety TechElectrical System

   Vehicle taken into dealership for maintenance, after car received cars system software malfunctioned. Display screen went black and states "return to dealer. failed update" due to this issue I don't have access to car settings with most features are unavailable. All warning chimes such as turn signals, park sensor warnings, lane departure warning are inoperable. Had drove miles with turn signal on causing traffic disruption on neighboring lanes.

   NHTSA complaint #11717162 · source
7. Filed Jan 31, 2026PADriver Assistance & Safety TechEngine

   Lost Power. Engine went into a limp mode. Engine starting knocking loudly and service esc came up on dash along with check engine light. Took it to the dealer and they said a lifter spun and damaged the camshaft. Dealer says it’s not covered by recall. Vehicle has been in Chevy dealer garage for 2 weeks and no repair yet.

   NHTSA complaint #11714679 · source
8. Filed Jan 10, 2026MOBrakesDriver Assistance & Safety TechEngine

   While driving on I-90 in Montana on a clear, sunny day at the posted speed limit of 80 miles per hour for one hour, the vehicle began making knocking noises then, all of a sudden lost power. Upon inspection at the nearest GM dealership service department in Butte, MT, I was told something within the engine broke. I have attached an emailed repair bid from the GM service department and have copied and pasted the highlights here: -Engine, Lines, Radiator, Water Pump, and Tune…

   NHTSA complaint #11710051 · source
9. Filed Dec 18, 202564,572 miFLTowedDriver Assistance & Safety TechElectrical SystemEngine

   The contact owns a 2021 Chevrolet Tahoe. The contact stated that while driving 20 MPH into the driveway, the engine seized. The contact stated that the service traction, service ESC, and engine warning lights were illuminated. Upon research, the contact associated the failure with NHTSA Action Number: EA25007 (Engine, Engine and Engine Cooling). The vehicle was towed to the local dealer, where it was diagnosed, and DTC: P0300, P050D, and P0302 were retrieved. The vehicle was…

   NHTSA complaint #11705793 · source
10. Filed Sep 2, 2025TXCrashTowedDriver Assistance & Safety TechEngineAcceleration & Cruise Control

    I drive a 2021 Chevrolet Tahoe. This occurrence has happened on three separate occasions and each time it was raining outside. The first occurrence, my vehicle was running and parked in the rain after driving approximately 5 miles. While parked my check engine light came on with a series of warnings: service ECS, service traction control, forward collision system unavailable, reduced acceleration drive with care. Two days later it went away. The second occurrence, I was…

    NHTSA complaint #11684360 · source
11. Filed Jun 18, 2025ALDriver Assistance & Safety TechElectrical System

    Failed OTA Update to information center (Radio) has caused radio unit and screen to become inoperable. Blinkers do not sound when on, warning sounds when backup camera are in use no longer work, along with cross traffic warning due to this. It should be noted we did not consent to the OTA update, and would have not wanted the update as it has caused damage to this system. GM know this is an issue and has refused to fix this.

    NHTSA complaint #11667745 · source
12. Filed May 29, 2025LADriver Assistance & Safety TechElectrical SystemAcceleration & Cruise Control

    Truck want go over 62 miles heater comes on full blast truck reduces speed while drive and transmission want shift 4wd error comes on service climate system comes on the power steering error comes on the service esc and washer fluid system error comes on it seems like an electrical manufacture error with the truck

    NHTSA complaint #11663669 · 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