TSB Document:

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

You can still get the detailed info from Buick for this TSB. Call your local Buick dealer's service department & ask for a copy of TSB# 020421006C.

Affected Component: POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE)

Summary

INOPERATIVE 4WD/AWD LAMPS, INOPERATIVE 4WD/AWD SYSTEM. *TT

Click a tab for more information.