S15/T15 4WD Jimmy L4-151 2.5L (1985)
Rear Defogger: Customer Interest
Tailgate Window Defogger - Will Not Function
BULLETIN NUMBER: 91-10-194
REFERENCE NUMBER: 261008
DATE: November 1992
TAILGATE WINDOW DEFOGGER WILL NOT FUNCTION (REPLACE TAILGATE GLASS LIFT/SUPPORT CYLINDERS)
1983-91 S/T UTILITY WITH RPO ZM8
Owners of some 1983-91 S/T Jimmys may comment that the tailgate window defogger will not function.
This condition may be caused by an electrical failure at the tailgate glass support/lift cylinder connection caused by the improper orientation of the
wiring male connector to the tailgate glass lift cylinder. A redesigned glass lift cylinder has been released to eliminate this condition. Previously only one
cylinder was released for both sides of the glass. To insure proper orientation of the male connector, separate part numbers are now required for the fight
and left cylinders.
Inspect the wiring for breaks at or near the glass lift cylinder connections.
Repair the wiring using procedures outlined in section 8A of the 1992 S/T Service Manual.
Replace the glass lift cylinder(s) with the redesigned cylinder(s) using correct part number(s) for the right and left cylinders.
Close the tailgate glass and verify that the wiring is not trapped between the glass and the weatherstrip. Reposition the wiring if required to prevent
SERVICE PARTS INFORMATION
Parts are currently available from GMSPO.
For vehicles repaired under warranty use: