1989 GMC C Series TSBs
5 Technical Service Bulletins across 3 categories
Categories
Engine
3 bulletinsSOME OWNERS MAY COMMENT ON HIGH OIL CONSUMPTION AFTER A GM GOODWRENCH REMANUFACTURED 4.3L V6 ENGINE IS INSTALLED.
Read full bulletin
*TT
GENERAL MOTORS BEGAN PROVIDING CHILD RESTRAIN SEAT TOP TETHER HARDWARE PACKAGES TO CUSTOMERS IN THE UNITED STATES WHO REQUESTED THEM.
Read full bulletin
*TT
The following information is provided to clearly explain Isuzus policy for control module (engine, transmission,...
Read full bulletin
antilock brake, instrument panel, body control, power interface, etc.) reprogramming. Control module calibrations are regularly updated for many reasons. These reasons may include, but are not limited to: model year change, software corrections, certification compliance, product improvement and specific application requirements. However, the mere existence of a newer control module calibration does not necessarily mean that warranty coverage exists or that the calibration must be installed. It is not our policy to update control modules, under warranty or after warranty, based solely on the availability of a newer calibration file. Below are our guidelines for reprogramming control modules.
Other
1 bulletinSUBJECT REGARDING A HARD, NO START OR EXCESSIVE GRAY OR WHITE SMOKE CONDITION ON START UP AFTER RECENT GLOW PLUG REPLACEMENT.
Read full bulletin
*TT
Body & Paint
1 bulletinFIBER GLASS REAR FENDER PAINT STAR SHAPED CRACKS (INSTALL PROTECTIVE LINER).
Read full bulletin
*TW