Affected Component: ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

Date Published

FEB 01, 2002

NHTSA TSB #

629495

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# 020604005.

Summary

SUBJECT REGARDING REVISED DIAGNOSTIC TROUBLE CODE P1221 SERVICE MANUAL INFORMATION. *TT