Affected Component: ELECTRICAL SYSTEM:IGNITION:MODULE

Date Published

MAY 01, 2002

NHTSA TSB #

634678

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# 020846005.

Summary

SUBJECT REGARDNG THE ADDITION OF DIAGNOSTIC TROUBLE CODE U1500 FOR GENERATION 4 ONSTAR. *TT