GMC SIERRA 3500 2021: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY

General Information

NHTSA Campaign ID Number: 24V797000

Make Model Year
GMC SIERRA 3500 2021
Date Owners Notified Date Received by ODI Date Added to Database
2024-12-12 2024-10-24 2024-10-25

Manufacturers Involved: General Motors, LLC

Manufacturer Campaign Number: N242454440

Component: POWER TRAIN:AUTOMATIC TRANSMISSION:FLUID/LUBRICANT:VALVES/VALVE BODY

Potential Number Of Units Affected: 463295

Report Initiator: MFR MFR Report

Summary

General Motors, LLC "GM" is recalling certain 2020-2022 Chevrolet Silverado 1500, 2500, 3500, GMC Sierra 1500, 2500, 3500, 2021 Cadillac Escalade, Escalade ESV, Chevrolet Tahoe, Suburban, GMC Yukon, and Yukon XL vehicles equipped with diesel engines. The transmission control valve may fail and cause the rear wheels to lock-up.

Consequence

Rear wheel lock-up can increase the risk of a crash.

Remedy

Dealers will install new transmission control module software, free of charge. GM will provide a special coverage program to cover the repair of transmissions that are identified by the remedy software as containing a defective control valve. Owner notification letters were mailed December 12, 2024. Owners may contact GM customer service at 1-888-988-7267, Cadillac customer service at 1-800-458-8006, GMC customer service at GMC 1-800-462-8782 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N242454440.

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 'TTY 1-800-424-9153' or go to www.nhtsa.gov.