Use cautionVehicle recall · NHTSA · Published October 24, 2024
Chevrolet Silverado 2020 Power Train Recall: Risk of Crash from Wheel Lock-Up
GM recalls 2020 Chevrolet Silverados with diesel engines due to rear wheel lock-up risk. Owners must contact GM for free software update to prevent crash hazards.
GM is recalling certain 2020 Chevrolet Silverado 2500 trucks with diesel engines because a faulty transmission control valve can cause rear wheels to lock up, increasing crash risk. Affected owners should contact GM for a free software update to fix the issue. Read more at govinfonow.com/recall/79323-chevrolet-silverado-2020-power-train-recall-risk-of-crash-from.
“Chevrolet Silverado 2020 Power Train Recall: Risk of Crash from Wheel Lock-Up.” GovInfoNow, updated August 18, 2026. https://govinfonow.com/recall/79323-chevrolet-silverado-2020-power-train-recall-risk-of-crash-from. Based on NHTSA recall #24V797000 (https://www.nhtsa.gov/recalls?nhtsaId=24V797000).
NHTSA announced on Oct. 24, 2024, that General Motors LLC is recalling certain Chevrolet Silverado and GMC Sierra vehicles due to a rear wheel lock-up hazard. Dealers will install new transmission control module software free of charge to address the defect.
How to tell if you have it
Chevrolet Silverado 1500, 2020-2022
Chevrolet Silverado 2500, 2020-2022
Chevrolet Silverado 3500, 2020-2022
Chevrolet Tahoe, 2021
Chevrolet Suburban, 2021
GMC Sierra 1500, 2020-2022
GMC Sierra 2500, 2020-2022
GMC Sierra 3500, 2020-2022
GMC Yukon, 2021
GMC Yukon XL, 2021
Cadillac Escalade, 2021
Cadillac Escalade ESV, 2021
What to do
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. 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.
The hazard
The transmission control valve may fail and cause the rear wheels to lock-up. This condition can increase the risk of a crash, according to NHTSA records show.
Context
GovInfoNow's records show General Motors LLC has 414 other recalls on record since 2011-02-11. Other recent recalls of similar products include Ford F-350 SD (2026) Power Train Recall: Risk of Vehicle Rollaway (2025-12-12), Ford 2026 F-150 Power Train Recall: Risk of Loss of Control (2026-09-09) and Toyota 2026 Grand Highlander Power Train Recall: Risk of Sudden Loss of Stability (2026-07-08).
How to tell if you have this one
Check if your 2020 Chevrolet Silverado 2500 has a diesel engine. The recall covers vehicles with specific transmission control valves that may fail.
Brand
Chevrolet
Category
Vehicle
Based on the official NHTSA remedy
What to do — step by step
Contact GM Customer Service
Call GM at 1-888-988-7267 or other provided numbers to schedule a free software update for the transmission control module.
Get Transmission Repair Coverage
If the remedy software identifies a defective control valve, GM will cover transmission repairs under their special program.
Official remedy
What NHTSA says to do
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.
How this recall unfolded
Recall timeline
Owners were mailed letters 49 days after NHTSA received the defect report.
1NHTSA received the defect report
2Owner letters mailed
Dates from the agency record only; steps without a date are left out.
Take action
Contact Chevrolet
We’ve drafted a message you can send Chevrolet to request your refund or repair — edit it as you like.
Subject: Recall 24V797000 — Chevrolet Silverado 2020 Power Train Recall: Risk of Crash from Wheel Lock-Up
Hello,
I own a Chevrolet Silverado 2020 Power Train Recall: Risk of Crash from Wheel Lock-Up that is covered by recall 24V797000 from Chevrolet.
The official recall notice states: 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.
I’m writing to arrange the remedy described in the recall (a refund, repair, or replacement as applicable). Could you please tell me the next steps to resolve this?
Thank you.
The facts (hazard, remedy, dates, manufacturer) are pulled from the official NHTSA recall record. The plain-language summary and step-by-step checklist are written by GovInfoNow to make the official notice easier to act on — they don’t replace it.
Plain-language summary written by qwen3:4b on August 18, 2026, from the official record above. Not reviewed by a person — if it conflicts with the NHTSA notice, the notice is correct. Report an error on this page.
GovInfoNow is an independent service and is not a government agency. We republish official NHTSA recall data; we don’t issue, amend or administer recalls.