Chevy Tahoe, GMC Yukon Brake Calibration Error

NHTSA campaign 21V579000 · Reported Jul 29, 2021 · General Motors, LLC

high How serious is it? About this label

Compromised overall braking performance increases the risk of a crash. The notice does not tell owners to stop driving.

Key facts

NHTSA campaign number	21V579000
Reported to NHTSA	Jul 29, 2021
Manufacturer	General Motors, LLC
Part affected	Service Brakes, Hydraulic:power Assist:electric:control Module:software
Vehicles covered	2 model/year combinations, model years 2021
Do-not-drive advisory	No
Park-outside advisory	No
Repair	Free at any franchised dealer

What's wrong, in plain English

Some dealers may have set up the brake system's control module incorrectly on these vehicles, which can affect stability control, traction control, anti-lock brakes, and braking while towing a trailer. Dealers will recalibrate the brake system control module to correct this, free of charge.

What you should do

1. Check your VIN at nhtsa.gov/recalls to see if your vehicle is included.
2. Contact a Chevrolet dealer at 1-800-222-1202 or a GMC dealer at 1-800-462-8782.
3. The recalibration is free.

Where do I find my VIN, and what do I tell the dealer?

Your VIN is the 17-character code on the lower left of the windshield, on your registration and usually on your insurance card. Enter it at nhtsa.gov/recalls to see whether this recall is still open on your car. When you call the dealer, say you have an open safety recall and give them NHTSA campaign number 21V579000. More in how recalls work.

Affected vehicles (2)

2021 Chevrolet Tahoe
2021 GMC Yukon

Who to contact

Chevrolet — official Chevrolet recall lookup

Customer service: 1-800-222-1020

GMC — official GMC recall lookup

Customer service: 1-800-462-8782

Any franchised dealer for the brand can do the repair. Phone numbers are taken from manufacturer sites and recent NHTSA notices; if one has changed, the number in your own recall letter is the one to use.

The bigger picture

Chevrolet Brake Recalls Include Fire Risks and Reduced Brake Assist · all 18 Chevrolet recalls in this area
GMC Brake Recalls Cover Reduced Assist, Software Errors and Leaks · all 11 GMC recalls in this area

Other Chevrolet Tahoe recalls

May 14, 2026Cadillac, Chevrolet, GMC SUVs Have Wrong Wheel Boltshigh
May 7, 2026Chevrolet Tahoe, GMC Yukon Wheels Can Lock Upcritical
Feb 13, 2026Cadillac, Chevrolet, GMC SUVs Rear Wheel Lockuphigh
Sep 18, 2025Cadillac, Chevy, GMC SUVs Have Wrong Fuel Tankcritical
Apr 24, 2025GM Trucks and SUVs Engine May Failhigh
Oct 24, 2024Diesel GM trucks, SUVs risk rear wheel lock-uphigh

All 27 Tahoe recalls

Official notice

Component: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:ELECTRIC:CONTROL MODULE:SOFTWARE
Summary: General Motors, LLC (GM) is recalling certain 2021 Chevrolet Tahoe and GMC Yukon vehicles. Dealer service technicians may have calibrated the brake system incorrectly, affecting Electronic Stability Control (ESC) , traction control, Anti-Lock Brake System (ABS), and braking while towing a trailer.
Safety risk: Overall braking performance may be compromised, increasing the risk of a crash.
Remedy: Dealers will recalibrate the brake system control module, free of charge. Owner notification letters were mailed on August 27, 2021. Owners may contact Chevrolet customer service at 1-800-222-1202; GMC customer service at 1-800-462-8782. GM's number for this recall is N212340970.

Verify your specific vehicle by VIN at nhtsa.gov. Recall repairs are free of charge by law.