NHTSA FEDERAL EVIDENCE AUDITAudited: 2026-08-25

2021 Chevrolet Traverse Common Problems & Defect Telemetry

Authoritative defect intelligence synthesized from 87 verified NHTSA owner complaints, 3 federal safety recalls, and interquartile failure mileage telemetry.

Data Grade: HIGH14 Odometer Verified EntriesMethodology
Executive AI Defect Summary

The 2021 Chevrolet Traverse receives a 6.7/10 MazicBay Reliability Index based on 87 verified NHTSA federal complaints and 3 safety recalls. The primary reported failure mode is Engine Stalling, Oil Consumption & Cooling Defect Reports with a median failure point at 55,000 miles (IQR: 35,00075,000 mi). Out-of-warranty repairs benchmark at $950 – $3,200 .

2021 Chevrolet TraverseMainstream2021
DLC Port: Driver lower kick panel to the right of brake pedal

*Representative vehicle platform imagery. Body styling varies across generations.

MazicBay Reliability Index
6.7 / 10

7.2 complaints / 10k sold

NHTSA Owner Complaints
87

Verified US federal records

Safety Severity Grade
Critical Risk

Crash, fire & stall audit

Federal Safety Recalls
3

3 Active / Free Remedies

Switch Traverse Model Year (2014–2025)
Defect Clustering

Top Reported Problem Clusters (7)

Ranked by NHTSA Complaint Frequency
#1 ENGINE & COOLINGCritical Severity81% Match Confidence

Engine Stalling, Oil Consumption & Cooling Defect Reports

26
Federal Complaints
Failure Mileage (Median):55,000 milesIQR: 35,00075,000 mi
Estimated Repair Cost:$950 – $3,200 MazicBay Repair Intelligence Model
Recall Status:Under Investigation / Recall AuditNHTSA Campaign Audit
Reported Defect Symptoms
  • Engine sudden stall / hesitation while driving
  • Abnormal oil burning / consumption
  • Check Engine Light (MIL) flashing
  • Engine overheating / coolant loss
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11757809 • Filed: 08/18/2026

The welding that holds the exhaust together has failed. They offer a Special Warranty to cover only the passenger side, however it has failed and exhaust is super loud. Also reading 4 codes from check engine alert. All are P0420 (cat convertor). The smell of exhaust and cat co...

ODI #11749147 • Filed: 07/08/2026

The contact owned a 2021 Chevrolet Traverse. The contact stated that the vehicle was taken to an independent mechanic for an inspection, where a leaking oil pan gasket was diagnosed. The contact stated that the failure had also occurred on a 2019 Chevrolet Traverse he owned. A...

ODI #11737628 • Filed: 05/13/2026

Check engine light came on and I noticed that the cooling fan would continue running for several minutes even after turning vehicle off. Had a mechanic run the diagnostics and the code came back as a thermostat/cooling issue. Although when I called to make an appointment and t...

#2 ELECTRICAL SYSTEM & BATTERYMedium Severity84% Match Confidence

Electrical Parasitic Drain, Infotainment & Harness Reports

26
Federal Complaints
Failure Mileage (Median):35,000 milesIQR: 26,25043,000 mi
Estimated Repair Cost:$280 – $850 MazicBay Repair Intelligence Model
Recall Status:Out-of-Pocket / TSB RemedyNHTSA Campaign Audit
Reported Defect Symptoms
  • Unexplained battery drain after sitting overnight
  • Infotainment display / instrument cluster blackouts
  • Accessory malfunction / alternator fault warnings
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11746551 • Filed: 06/25/2026

On ... I purchased the vehicle from Bakersfield Hyundai within days I reported break failure and notified them about a noise that was coming from the SUV that sounded like a mini motorcycle, they first said (Xavier) that the noise would go away because it had just gotten servi...

ODI #11736727 • Filed: 05/09/2026

I am filing a safety complaint regarding two vehicles provided through Bob Hook Chevrolet in ... . My Chevrolet Traverse has been at the dealership for approximately one month due to a transmission failure. The vehicle has remained unrepaired during that time. The transmission...

ODI #11736069 • Filed: 05/06/2026Odometer: 60,000 mi

Alternator fail before 60,000 miles. Had the car almost 3 years and children in it. Apparently a known common issue yet no recall it’s not a reliable car

#3 STEERING & SUSPENSIONCritical Severity65% Match Confidence

Electric Power Steering Assist & Suspension Noise Reports

21
Federal Complaints
Failure Mileage (Median):29,851 milesIQR: 29,77729,926 mi
Estimated Repair Cost:$450 – $1,400 MazicBay Repair Intelligence Model
Recall Status:Under Investigation / Recall AuditNHTSA Campaign Audit
Reported Defect Symptoms
  • Sudden loss of electric power steering assist
  • Steering wheel pull or highway wander
  • Clunking / knocking noise over bumps
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11736727 • Filed: 05/09/2026

I am filing a safety complaint regarding two vehicles provided through Bob Hook Chevrolet in ... . My Chevrolet Traverse has been at the dealership for approximately one month due to a transmission failure. The vehicle has remained unrepaired during that time. The transmission...

ODI #11735181 • Filed: 05/01/2026

While driving, the steering wheel became very hard to control. A system warning came up on the dashboard screen stating that the steering wheel was not working. With an 18-wheeler coming up behind me the decision to pull over was made. The left hand turn into an auto part stor...

ODI #11731364 • Filed: 04/15/2026

What component or system failed or malfunctioned, and is it available for inspection upon request? My wife and daughter were both involved in a car accident. My wife was driving the speed limit (30-35 mph) when a car traveling in the opposite direction turned left into her lan...

#4 TRANSMISSION & DRIVETRAINMedium Severity80% Match Confidence

Transmission Hesitation, Hard Shifting & Slipping Reports

18
Federal Complaints
Failure Mileage (Median):4,000 milesIQR: 2,54359,500 mi
Estimated Repair Cost:$1,400 – $3,800 MazicBay Repair Intelligence Model
Recall Status:Out-of-Pocket / TSB RemedyNHTSA Campaign Audit
Reported Defect Symptoms
  • Hard gear shifts / delayed engagement into Drive/Reverse
  • Transmission shudder / jerking under acceleration
  • Transmission slipping between gears
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11736727 • Filed: 05/09/2026

I am filing a safety complaint regarding two vehicles provided through Bob Hook Chevrolet in ... . My Chevrolet Traverse has been at the dealership for approximately one month due to a transmission failure. The vehicle has remained unrepaired during that time. The transmission...

ODI #11733348 • Filed: 04/23/2026

The car sometimes will not accelerate in the 25-35 mph range and will begin to shudder and shake. This can be very dangerous when attempting to merge on a highway. This also happens when completely stopped and and then accelerating. It will shake and shudders until or not acce...

ODI #11725385 • Filed: 03/18/2026

I was driving and without any type of warning the car stopped shifting so I was barely touching the gas but my tac was all the way up.

#5 BRAKING SYSTEM & ABSCritical Severity79% Match Confidence

Service Brakes, ABS Actuator & Master Cylinder Reports

13
Federal Complaints
Failure Mileage (Median):29,702 milesIQR: 22,35172,351 mi
Estimated Repair Cost:$350 – $1,100 MazicBay Repair Intelligence Model
Recall Status:Under Investigation / Recall AuditNHTSA Campaign Audit
Reported Defect Symptoms
  • Spongy or hard brake pedal travel
  • ABS / Brake warning light illuminated
  • Extended stopping distance / pedal vibration
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11696435 • Filed: 10/29/2025Odometer: 29,702 mi

Right Rear upper and lower toe links broke nearly causing a serious accident when brakes were applied, vehicle pulled severely to the right causing it to swerve and narrowly missing another vehicle. The toe link failure on my vehicle which has only 29702 miles put my life and ...

ODI #11691105 • Filed: 10/02/2025

While going around 40mph I approached a stopped vehicle and tried to come to a stop. At this time my braking system failed, speeding the car up instead of slowing it down, this resulted in my car rear ending another vehicle. When the car accident occurred my steering wheel air...

ODI #11647427 • Filed: 03/10/2025

1. DRIVER SIDE EXHAUST FLEX PIPE BRAKET 2. Exhaust leak 3. Yes. It has been replicated and diagnosed. 4. No engine light. There was a rattling and increased exhaust noise. A hole in the exhaust pipe at the bracket location was found. 5. This condition seems to be a common prob...

#6 AIRBAGS & SAFETY RESTRAINTSCritical Severity72% Match Confidence

Airbag Occupant Detection & Inflator Defect Reports

6
Federal Complaints
Failure Mileage (Median):55,000 milesIQR: 35,00075,000 mi
Estimated Repair Cost:$400 – $1,200 MazicBay Repair Intelligence Model
Recall Status:Under Investigation / Recall AuditNHTSA Campaign Audit
Reported Defect Symptoms
  • SRS Airbag warning lamp illuminated
  • Passenger occupant classification sensor failure
  • Seat belt retractor lockup
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (3)
ODI #11731364 • Filed: 04/15/2026

What component or system failed or malfunctioned, and is it available for inspection upon request? My wife and daughter were both involved in a car accident. My wife was driving the speed limit (30-35 mph) when a car traveling in the opposite direction turned left into her lan...

ODI #11691105 • Filed: 10/02/2025

While going around 40mph I approached a stopped vehicle and tried to come to a stop. At this time my braking system failed, speeding the car up instead of slowing it down, this resulted in my car rear ending another vehicle. When the car accident occurred my steering wheel air...

ODI #11631717 • Filed: 12/20/2024

My front passenger seat belt has started to not latch. I have to push the button and insert the seatbelt in order for it to latch. Sometimes it will release on it’s own.

#7 FUEL SYSTEM & INJECTIONLow Severity83% Match Confidence

Fuel Pump Pressure Loss & Fuel Delivery Defect Reports

1
Federal Complaints
Failure Mileage (Median):55,000 milesIQR: 35,00075,000 mi
Estimated Repair Cost:$650 – $1,250 MazicBay Repair Intelligence Model
Recall Status:Out-of-Pocket / TSB RemedyNHTSA Campaign Audit
Reported Defect Symptoms
  • Sudden loss of propulsion power at highway speeds
  • Extended engine cranking / failure to restart
  • Fuel odor near fuel tank / engine bay
Potentially Associated OBD-II Codes

Correlated via MazicBay Diagnostic Engine (not NHTSA verified fact).

Sample Verified NHTSA Evidence Records (1)
ODI #11495132 • Filed: 11/28/2022

The contact owns a 2021 Chevrolet Traverse. The contact stated that while driving at an undisclosed speed, she heard a rattling sound coming from the hood of the vehicle. An unknown warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed that ...

Safety Enforcement

Official NHTSA Safety Recalls (3)

100% Free Dealer Repair
NHTSA Campaign #21V817000Reported: 18/10/2021

POWER TRAIN:AUTOMATIC TRANSMISSION

Summary: Braun Corporation (Braun) is recalling certain 2020-2021 Chevrolet Traverse wheelchair accessible vehicles with Power In-floor Ramp conversion. The screw and clip that hold the inner wheel-well plastic shroud in place may chafe against the transmission case, possibly resulting in a transmission fluid leak.

Safety Consequence: A transmission fluid leak can cause a loss of drive power, increasing the risk of a crash. In addition, a leak in the presence of an ignition source increases the risk of a fire.
Manufacturer Remedy: Dealers will replace the screw and clip, and inspect for signs of contact with the transmission, free of charge. Owner notification letters were mailed November 29, 2021. Owners may contact Braun customer service at 1-800-488-0359.
NHTSA Campaign #21V472000Reported: 24/06/2021

AIR BAGS:SENSOR:FRONTAL IMPACT

Summary: General Motors, LLC (GM) is recalling certain 2021 Chevrolet Traverse and Buick Enclave vehicles. During service by dealers, certain vehicles may have received incorrect air bag calibration software that may affect frontal airbag deployment.

Safety Consequence: Air bags that do not deploy as intended can increase the risk of injury.
Manufacturer Remedy: Dealers will update the air bag calibration software, free of charge. Owner notification letters were mailed on July 29, 2021. Owners may contact Chevrolet customer service at 1-800-222-1020 and Buick customer service at 1-800-521-7300. GM's number for this recall is N212340220.
NHTSA Campaign #22V210000Reported: 31/03/2022

AIR BAGS:SIDE/WINDOW:CURTAIN

Summary: General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Traverse and 2021-2022 Buick Enclave vehicles. The harness connector to the left or right side roof rail air bag may have incompatible electrical terminals, which could prevent the air bags from deploying in a crash.

Safety Consequence: Roof rail air bags that do not deploy as intended increase the risk of injury in a crash.
Manufacturer Remedy: Dealers will replace the harness connector to the roof rail air bags, free of charge. Owner notification letters were mailed on April 29, 2022. Owners may contact Buick customer service at 1-800-521-7300 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N212352140.

Pre-Purchase Inspection Checklist for 2021 Chevrolet Traverse

Before purchasing a used 2021 Chevrolet Traverse, perform the following targeted inspections based on reported federal defect patterns:

1. Cold Start & Idle Diagnostics

Scan the OBD-II port under the dash for pending freeze-frame codes (e.g. P0300 misfires, P0087 fuel rail pressure, P0420 catalytic efficiency).

2. Transmission Shift Quality Audit

Test vehicle at low-speed stop-and-go and highway merges. Check for delayed reverse engagement or gear shift shudder between 2nd and 3rd gears.

3. Federal Recall Completion Check

Verify that all 3 NHTSA safety recall campaigns have been performed by an authorized dealership using the VIN.

4. Electrical & Infotainment Drain Check

Ensure the instrument cluster, center screen, and auxiliary charging ports operate with stable 12.0V–14.4V alternator voltage.

Frequently Answered Questions

Defect & Reliability Q&A: 2021 Chevrolet Traverse

Is the 2021 Chevrolet Traverse a reliable used car?

The 2021 Chevrolet Traverse earns a 6.7/10 MazicBay Reliability Index based on 87 federal owner reports. Vehicles maintained under factory service schedules exhibit strong longevity past 150,000 miles.

What is the most frequent defect reported on the 2021 Chevrolet Traverse?

The leading complaint category is Engine Stalling, Oil Consumption & Cooling Defect Reports, with a median failure point around 55,000 miles (IQR: 35,00075,000 mi).

Are there free recall repairs available for the 2021 Chevrolet Traverse?

Yes, the NHTSA records 3 safety recall campaign(s) for this model year. All safety recalls are performed 100% free of charge by authorized franchise dealerships regardless of vehicle warranty status.