TSB Document:

• Sorry, the NHTSA has not posted this TSB document yet.

You can still get the detailed info from GMC for this TSB. Call your local GMC dealer's service department & ask for a copy of TSB# 4421.

Affected Component: SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY

Summary

REAR AXLE HOP DURING AGGRESSIVE BRAKING. *KB

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