Recall 10V643 covers 2011 Cadillac Escalade, Silverado 1500, Sierra 1500, and Avalanche 1500 vehicles for rear-axle lockup. Free repair is available.
Cadillac is recalling 1,262 2011 Escalade, Silverado 1500, Sierra 1500, and Avalanche 1500 vehicles under recall 10V643 because rear axle cross pins were not properly heat treated and can fracture. If a pin shifts, the rear axle can lock, leaving the driver unable to maintain directional control; the dealer repair will be free once available.
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What's wrong?
The rear axle cross pin in these 2011 Escalade, Silverado 1500, Sierra 1500, and Avalanche 1500 vehicles sits inside the rear axle assembly. It helps hold the differential gears in position so power from the driveshaft can be sent to the rear wheels while the wheels turn at different speeds in a corner.
On affected vehicles, the cross pins were not properly heat treated. Heat treating hardens the metal so it can handle axle loads. Without that hardness, the pin can fracture and move out of place inside the axle. If the broken pin shifts into the wrong spot, it can interfere with moving axle parts and lock the rear axle.
There is no warning sign before failure. An owner should not expect a light, sound, or change in handling that reliably gives advance notice. If the axle locks, the rear wheels can stop turning normally and the vehicle can become hard to control.
Who's affected?
Covers 4 truck and SUV nameplates from the 2011 model year, all tied to rear suspension spindle hardware.
| 2011 Cadillac Escalade | rear suspension |
|---|---|
| 2011 Chevrolet Silverado 1500 | rear suspension |
| 2011 GMC Sierra 1500 | rear suspension |
| 2011 Chevrolet Avalanche 1500 | rear suspension |
| Units affected | 1,262 |
A matching year and model does not guarantee inclusion. Check your VIN to confirm whether this recall applies to your specific vehicle.
What's the safety risk?
A rear axle cross pin problem can leave the driver unable to maintain directional control, increasing crash risk without warning. If your VIN is included, schedule the recall repair soon and ask the dealer whether the vehicle is safe to drive until the appointment. Repair will be free at any franchised Cadillac dealer once available.
What should I do?
- Check your VIN to confirm your 2011 Cadillac Escalade, Silverado 1500, Sierra 1500, or Avalanche 1500 is included in this recall.
- Watch for your owner letter if you have not received one, then contact a franchised Cadillac dealer for next steps on the free repair.
- Ask the dealer to install the rear axle cross pin that prevents the axle pin from shifting and locking the rear axle.
- Reference recall number 10V643 when you call, and bring the recall notice if you have it.
- Drive cautiously until the repair is complete because the rear axle can lock without warning.
What happens at the repair
At the dealer, a Cadillac technician installs a new rear axle cross pin. That part sits inside the rear axle, and this recall addresses pins that were not properly heat treated. Parts and labor are covered under the recall. The safety recall began on January 11, 2011, so ask the Cadillac service desk to confirm VIN eligibility and complete the covered repair.
Timeline
| December 17, 2010 | NHTSA published the recall |
|---|---|
| January 11, 2011 | Owner notification mailed |
Frequently asked questions
What is recall 10V643?
Recall 10V643 covers 1,262 2011 Cadillac Escalade, Silverado 1500, Sierra 1500, and Avalanche 1500 vehicles with rear axle cross pins that were not properly heat treated. The pin can fracture, shift inside the rear axle, and cause the rear axle to lock.
What should I do if my 2011 Cadillac Escalade, Silverado 1500, Sierra 1500, or Avalanche 1500 is on this recall?
Check your VIN to confirm your specific vehicle is included in recall 10V643. If it is, contact a franchised Cadillac dealer and ask for the rear axle cross pin recall repair. Reference recall number 10V643 when you call. The dealer repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to repair the defect at no cost, and the remedy states that dealers install a new rear axle cross pin free of charge. The safety recall repair began on January 11, 2011.
What is the safety risk?
The rear axle can lock without warning if the cross pin fractures and shifts out of position. That can leave the driver unable to maintain directional control and increase crash risk. Confirm your VIN, then schedule the free dealer repair if your vehicle is included.
What if I bought this vehicle used?
The free recall repair still applies. Recall eligibility follows the VIN, not the original owner. If you never received a recall letter, check your VIN to see whether your vehicle is included in recall 10V643, then call a franchised Cadillac dealer with the campaign number.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/10V643000 |
|---|---|
| Cadillac customer service | 1-866-982-2339 |
| NHTSA recall # | 10V643 |
| NHTSA recall # (full) | 10V643000 |
Source documents
-
Download Recall Investigation Document (PDF) (PDF) - Download Recall Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Defect / Noncompliance Notice (PDF) (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on June 3, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →