Recall 21V423 covers 896 2019 Sierra 1500 and Silverado 1500 trucks with over-cured tires. The repair is free at any franchised GMC dealer.
GMC is recalling 896 2019 Sierra 1500 and Silverado 1500 vehicles because the tires were overcured during production. The tires can develop a sidewall break, sudden air loss, or tread and belt loss, which can cause loss of vehicle control and increase crash risk; the dealer repair is free.
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What's wrong?
The tires on the 2019 Sierra 1500 and Silverado 1500 are the contact points between the truck and the road. Each tire has a reinforced sidewall that supports vehicle weight, holds air pressure, and helps the tread stay stable while braking, turning, and carrying a load.
On the recalled trucks, certain tires were cured too long during production. Curing is the heat and pressure step that hardens the tire into its final shape. Because these tires stayed in that process beyond Continental's specifications, recall 21V423 treats the affected DOT number and mold number combinations as suspect and calls for replacement with tires outside those combinations.
The issue was also tied to an earlier service bulletin for recall 21V-115 that did not list the 2019 Silverado 1500 and Sierra 1500 next to one affected part and mold combination. That mistake left some suspect tires at risk of being missed during inspection. There is no warning sign before failure.
Who's affected?
Covers both the Sierra 1500 and Silverado 1500, tied to the same tire part number, 23242101.
| 2019 GMC Sierra 1500 | tire |
|---|---|
| 2019 GMC Sierra 1500 | tire |
| 2019 Chevrolet Silverado 1500 | tire |
| 2019 Chevrolet Silverado 1500 | tire |
| Units affected | 896 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching 2019 Sierra 1500 or Silverado 1500 does not guarantee inclusion. Check your VIN to confirm whether your specific pickup truck is included.
What's the safety risk?
Over cured tires can break in the sidewall, lose air suddenly, or separate at the belt edge. Tread or belt loss can cause a loss of vehicle control and increase the risk of a crash. Drive cautiously and schedule the tire inspection soon. Repair is free at any franchised GMC dealer.
What should I do?
- Check your VIN to confirm your 2019 GMC Sierra 1500 or Chevrolet Silverado 1500 is included in this recall.
- Contact a franchised GMC or Chevrolet dealer to schedule the free tire inspection and replacement.
- Bring the recall notice if you have it, and reference recall number 21V423 when you call.
- Drive cautiously until the tires are inspected, and stop driving if a tire loses air or tread/belt material separates.
What happens at the repair
At the dealer, a GMC technician inspects the tires covered by recall 21V423 and replaces any affected tire that needs replacement. The inspection, replacement tires, and labor are free under the recall. If you paid to replace an affected tire before the recall notice, the owner letter explains how to apply directly to Continental for reimbursement. Bring any tire replacement invoice or repair paperwork so the service desk can point you to the correct reimbursement instructions.
| Reimbursement | Reimbursement available |
|---|
Timeline
| June 3, 2021 | NHTSA published the recall |
|---|---|
| June 3, 2021 | Dealer notification began |
| June 3, 2021 | Dealer notification ended |
| June 25, 2021 | Owner notification mailed |
| July 19, 2021 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 21V423?
Recall 21V423 covers 896 2019 GMC Sierra 1500 and Chevrolet Silverado 1500 vehicles with tires that were cured too long during production. The tires can suffer sidewall damage, sudden air loss, belt edge separation, or tread and belt loss, raising crash risk. Dealers will inspect and replace affected tires for free.
What should I do if my 2019 GMC Sierra 1500 or Chevrolet Silverado 1500 is on this recall?
Check your VIN to confirm your specific truck is included in recall 21V423. If it is, contact a franchised GMC or Chevrolet dealer to schedule the tire inspection. Reference GM recall number N212336230 when you call. The dealer will replace affected tires for free.
Is the recall repair free?
Yes. Federal recall law requires manufacturers to repair safety defects at no cost to owners. For recall 21V423, the dealer inspection is free, and any tire replacement required by the recall is free at a franchised GMC or Chevrolet dealer.
What is the safety risk?
The risk is sudden tire failure that causes loss of vehicle control. GM reported that over cured tires can develop a sidewall break, sudden air loss, belt edge separation, or tread and belt loss. If your VIN is included, arrange the free dealer inspection before relying on the truck for normal driving.
When were owners notified about recall 21V423?
GM mailed owner notification letters on June 25, 2021. If you bought the truck used or never received a letter, the free repair still applies. Check your VIN, then call a franchised GMC or Chevrolet dealer with recall number 21V423 or GM number N212336230.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V423000 |
|---|---|
| GMC customer service | 1-800-222-1020 |
| NHTSA recall # | 21V423 |
| NHTSA recall # (full) | 21V423000 |
Source documents
-
Download Recall Document (PDF) (PDF) - 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 23, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →