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# 020421002.

Affected Component: UNKNOWN OR OTHER

Summary

SOME OWNERS MAY COMMENT ON THE SERVICE 4WD INDICATOR ILLUMINATING, IN ADDITION TO DIAGNOSTIC TROUBLE CODE B2725. *TT

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