Chevrolet is recalling 2021 4500HD vehicles with improperly heat-treated hex flange lock nuts that may break, causing steering instability and crash risk. Owners should contact GM for free replacement.
Broken hex flange lock nuts may cause a loss of tension, leading to steering instability, and increasing the risk of a crash.
Chevrolet is recalling 2021 4500HD trucks because their suspension lock nuts may break due to improper heat treatment. This could cause steering instability and increase crash risk. Affected owners should get the lock nuts replaced by a dealer. Read more at govinfonow.com/recall/80297-chevrolet-4500hd-2021-recall-broken-lock-nuts-risk-steering-instability.
Source Summary by GovInfoNow · govinfonow.com/recall/80297-chevrolet-4500hd-2021-recall-broken-lock-nuts-risk-steering-instability · Updated October 4, 2026 · Official notice: NHTSA #22V874000
“Chevrolet 4500HD (2021) Recall: Broken Lock Nuts Risk Steering Instability.” GovInfoNow, updated October 4, 2026. https://govinfonow.com/recall/80297-chevrolet-4500hd-2021-recall-broken-lock-nuts-risk-steering-instability. Based on NHTSA recall 22V874000 (https://www.nhtsa.gov/recalls?nhtsaId=22V874000).
The hex flange lock nuts in the suspension and steering joints were improperly heat-treated and may break. When they break, they can cause loss of tension, leading to steering instability and increasing crash risk.
Owners of 2021 Chevrolet 4500HD trucks are affected. Drivers with improper heat-treated lock nuts face higher risk of steering instability.
Check your 2021 Chevrolet 4500HD truck for hex flange lock nuts in the suspension and steering joints. The recall covers vehicles sold between 2021-2022.
Call 1-800-222-1020 to get the hex flange lock nuts replaced at no cost.
Dealers will replace the hex flange lock nuts as necessary for free.
Dealers will replace the hex flange lock nuts as necessary, free of charge. Interim owner notification letters informing owners of the safety risk were mailed December 27, 2022. Owner notification letters were mailed February 10, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N222391080.
The hex flange lock nuts were improperly heat-treated and may break, causing loss of tension and steering instability.
Interim owner notification letters were mailed December 27, 2022, and full owner notification letters were mailed February 10, 2023.
Check if your 2021 Chevrolet 4500HD truck has hex flange lock nuts in the suspension and steering joints that were improperly heat-treated.
We’ve drafted a message you can send Chevrolet to request your refund or repair — edit it as you like.
Subject: Recall 22V874000 — Chevrolet Chevrolet Hello, I own a Chevrolet that is covered by recall 22V874000 from Chevrolet. The official recall notice states: Dealers will replace the hex flange lock nuts as necessary, free of charge. Interim owner notification letters informing owners of the safety risk were mailed December 27, 2022. Owner notification letters were mailed February 10, 2023. Owners may contact Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N222391080. 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.
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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.
