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# 040421002.

Affected Component: POWER TRAIN:AUTOMATIC TRANSMISSION

Summary

NOISE AND BUMP CLUNK FELT WHEN TRANSFER CASE SHIFTED INTO FOUR LOW. *EH

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