AI Damage2021 Chevrolet Tahoe: common problems
Owners of the 2021 Chevrolet Tahoe filed 460 complaints with NHTSA, most often about engine and fuel/propulsion system. The maker issued 1,477 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 460
- involving a crash
- 9
- Technical service bulletins (TSB)
- 1,477
What fails most often
- 1 Engine 37% of all complaints
- 2 Fuel/propulsion system 20% of all complaints
- 3 Powertrain 20% of all complaints
- 4 Electrical system 13% of all complaints
- 5 Air bags 6% of all complaints
- 6 Fuel system 5% of all complaints
- 7 Service brakes 5% of all complaints
- 8 Forward collision avoidance 5% of all complaints
- Engine: 169 complaints (37% of all), 2 of them with a crash reported by the owner; manufacturer bulletins for this component: 115.
- Fuel/propulsion system: 94 complaints (20% of all); manufacturer bulletins for this component: 24.
- Powertrain: 90 complaints (20% of all), 1 of them with a crash reported by the owner; manufacturer bulletins for this component: 178.
- Electrical system: 58 complaints (13% of all), 1 of them with a crash reported by the owner; manufacturer bulletins for this component: 390.
- Air bags: 27 complaints (6% of all), 2 of them with a crash reported by the owner; manufacturer bulletins for this component: 46.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 5.3 L · petrol · 8 cylnamed in 7 complaints
- 6.2 L · petrol · 8 cylnamed in 20 complaints
- 3 L · diesel · turbo · 6 cylnamed in 8 complaints
- automatic, 10-speed
Drive: RWD, 4WD
Symptoms owners describe
How many of the 460 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Engine | 169 | 2 | 115 |
| Fuel/propulsion system | 94 | 0 | 24 |
| Powertrain | 90 | 1 | 178 |
| Electrical system | 58 | 1 | 390 |
| Air bags | 27 | 2 | 46 |
| Fuel system | 25 | 0 | 67 |
| Service brakes | 22 | 2 | 48 |
| Forward collision avoidance | 21 | 1 | 18 |
| Engine and cooling | 17 | 0 | 255 |
| Exterior lighting | 16 | 0 | 24 |
| Steering | 15 | 1 | 31 |
| Seat belts | 13 | 1 | 5 |
| Vehicle speed control | 10 | 1 | 6 |
| Suspension | 8 | 1 | 55 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
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.
Our vehicle was rear ended and the front passenger seatbelt did not lock or (possibly) locked too late. The front passenger's face hit the dashboard, as well as their knees and feet. The vehicle that hit ours was estimated to be travelling at about 45 mph and we were rolling at around 5 mph in traffic.
Air bags did not deploy after significant frontal damage. No warning that the air bag sensor was bad.
There were no reports of air bag deployment, fire, or a police report filed. OnStar notified her that her front driver's side tire had a problem. The contact's neighbor, who is an independent mechanic, stated that the tire broke and detached.
The airbags failed to deploy in my 2021 Chevrolet Tahoe after being involved in an accident where another vehicle t-boned my vehicle on the passenger side front end to rear end causing severe damage and pushing my vehicle with great force. A police report was taken by officers that responded to the traffic accident.
Brakes fail a low speed, less than 10 MPH. Happen three times. First time there was an accident. I have a dash cam. I had to place the Tahoe into park to get it to stop. Was at dealership for bent push rods for 15 day. I ask them to check the brakes. I guess there were to busy and never checked them (Nucar Chevrolet).
While the car was being inspected there was a recall to the power steering that may apply to the vehicle. I would like for the NHTSA to investigate this issue. The car has been repaired and is in my possession and my insurance company has all of t
During the incident, the pre collision warning system malfunctioned and did not activate causing the vehicle to crash into a steel transformer. During the crash the driver sustained fractured ribs that required medical attention. A police report was taken at the scene and the vehicle was towed away.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 116 of 2,102 model years in the NHTSA data (top 6% most complained about).
On average one model year of the Tahoe has 143 complaints (12 years in the data). This year has 460, above average.
What to check before buying
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- This preliminary PI was created to advise techniians in the field that they will not be able to perform a…
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
- This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance
- This PI provides a diagnostic tip when fuse F4DR is opening and dealerships are to inspect the wiring at…
This PI provides a diagnostic tip when fuse F4DR is opening and dealerships are to inspect the wiring at the center console lid.
- This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
- This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set…
This PI Communicates information to ensure Memory Recall is enabled to ensure memory mirrors return to set position after curbview assist is used.
- PI to help diagnose A/C concern
- This PI provides diagnostic tips for diagnosing electric trailer brakes issues
- This Preliminary information communicates where to find the back antenna for learning new key fobs
- This Preliminary information communicates an issue with an OTA pending message still displayed after an…
This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
- This PI advises dealers that if the K160 Brake System Control Module sets DTC P0606 along with P0562…
This PI advises dealers that if the K160 Brake System Control Module sets DTC P0606 along with P0562 and/or P25A2, additional diagnostic aids should be followed before replacing parts. The PI provides guidance to…
NHTSA lists 1,477 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2021 Chevrolet Tahoe?
Owner complaints to NHTSA most often mention: engine, fuel/propulsion system, powertrain. Total complaints: 460. The most frequent symptoms in complaint texts: warning lights, check engine (29%), fuel system, fuel smell (17%), loss of power / limp mode (13%).
How many service bulletins (TSB) were issued for the 2021 Chevrolet Tahoe?
NHTSA lists 1,477 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2021 Chevrolet Tahoe from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2021 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.