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# 667406.

Affected Component: POWER TRAIN:MANUAL TRANSMISSION

Summary

TRANSFER CASE HOPS OUT OF 4-HIGH, OR NO DRIVE IN 2 OR 4-HIGH RANGES AND/OR GRINDING NOISE (INSTALL MAINSHAFT/RANGE HUB KIT) *TW

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