Recall 21V579 covers 2 2021 Chevrolet Tahoe and GMC Yukon vehicles with incorrect brake system calibration. Repair is free at any franchised Chevrolet dealer.
Chevrolet is recalling 2 2021 vehicles, the Tahoe and GMC Yukon, because dealer service work left the brake system incorrectly calibrated. The error can affect electronic stability control, traction control, anti-lock braking, and braking while towing a trailer; Chevrolet dealers will correct the calibration free of charge.
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What's wrong?
The brake system control module is the computer that helps manage braking commands on the 2021 Tahoe and Yukon. It works with Electronic Stability Control, traction control, the Anti-Lock Brake System, and trailer-braking functions so the SUV responds correctly when traction changes or the driver brakes while towing. The module depends on software calibration files matched to the vehicle's exact VIN and equipment.
On affected vehicles, a dealer service technician entered the wrong VIN during service reprogramming. That loaded calibration data meant for a different vehicle configuration. With the wrong file installed, the brake system control module can make stability control, traction control, ABS, and trailer-related braking behave differently than Chevrolet intended for that specific SUV.
The repair is software, not a mechanical part swap: the electronic brake control module is reprogrammed with calibration files matched to the correct VIN. There is no warning sign before failure. An owner is unlikely to see a clear symptom that proves the calibration is wrong.
Who's affected?
Both 2021 Tahoe and Yukon SUVs share the same brake system control module software in this recall.
| 2021 Chevrolet Tahoe | hydraulic brake system |
|---|---|
| 2021 GMC Yukon | hydraulic brake system |
| Units affected | 2 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether your specific SUV is included.
What's the safety risk?
A brake control module calibration problem can compromise braking performance and increase the risk of a crash. If brake response feels abnormal, slow down, leave extra distance, and schedule the recall repair soon. The risk is reduced once the brake system control module is recalibrated. Repair is free at any franchised Chevrolet dealer.
What should I do?
- Check your VIN to confirm your 2021 Chevrolet Tahoe or GMC Yukon is included in this recall.
- Contact your nearest franchised Chevrolet or GMC dealer to schedule the free brake-system-control-module recalibration.
- Bring the recall notice if you have it. If not, reference recall number 21V579 when you call.
- Ask the dealer to confirm the recalibration fixes the incorrect brake-system software affecting ESC, traction control, ABS, and braking while towing.
- Drive cautiously until the repair is complete. Leave extra following distance and avoid towing a trailer.
What happens at the repair
At the dealer, a Chevrolet technician recalibrates the brake system control module so the stability control, traction control, anti-lock braking, and trailer braking systems use the correct settings. The recall repair is free, and the dealer work is covered. Prior related repairs fall under the existing vehicle warranty, not a separate reimbursement program, because the covered vehicles were still under warranty. Ask the service desk how warranty coverage applies if you have prior brake system paperwork.
| Reimbursement | Warranty coverage applies |
|---|
Timeline
| July 29, 2021 | NHTSA published the recall |
|---|---|
| July 29, 2021 | Dealer notification began |
| July 29, 2021 | Dealer notification ended |
| August 27, 2021 | Owner notification mailed |
| September 13, 2021 | VIN-searchable in NHTSA's database — Check your VIN to see whether this recall applies to your specific vehicle. |
| September 13, 2021 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 21V579?
Recall 21V579 covers 2 2021 Chevrolet Tahoe and GMC Yukon vehicles with brake system control module software that was calibrated incorrectly during dealer service. The issue affects ESC, traction control, ABS, and trailer braking. Dealers will recalibrate the module for free.
What should I do if my 2021 Chevrolet Tahoe or GMC Yukon is on this recall?
Check your VIN to confirm your specific SUV is included in recall 21V579. If it is, contact a franchised Chevrolet or GMC dealer to schedule the brake system control module recalibration. Reference GM recall number N212340970 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and GM says dealers will recalibrate the brake system control module free of charge for vehicles included in recall 21V579.
What is the safety risk?
The safety risk is reduced braking performance, which increases crash risk. GM's filing says the incorrect calibration affects Electronic Stability Control, traction control, ABS, and braking while towing a trailer. If your VIN is included, schedule the free dealer recalibration.
When were owners notified about recall 21V579?
GM mailed owner notification letters on August 27, 2021. A used vehicle, moved address, or missed letter does not change the free repair. Check your VIN to confirm whether your 2021 Tahoe or Yukon is included, then call the dealer with recall number 21V579.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V579000 |
|---|---|
| Chevrolet customer service | 1-800-222-1202 |
| NHTSA recall # | 21V579 |
| NHTSA recall # (full) | 21V579000 |
Source documents
-
Download Quarterly Report (PDF) - Download Misc. Document (PDF)
- Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 20, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →