DeVille V8-273 4.5L (1989)
Heated Glass Control Module: Technical Service Bulletins
Windshield (Heated) - Power Module Service Kit
Bulletin No.:
T-92-85
File in Group:
9
Number:
85
Corp. Ref. No.:
219002
Date:
April, 1992
SUBJECT:
RELEASE OF HEATED WINDSHIELD POWER MODULE SERVICE KIT
MODELS AFFECTED:
1989-1990 DE VILLES AND FLEETWOODS
A new service kit, P/N 10478526, has been released for heated windshield power module service on 1989-1990 DeVilles and Fleetwoods. Due to
internal changes in the module, the procedure below must be followed during initial installation of kit P/N 10478526.
Parts are currently available from GMSPO.
Disassemble:
1.
Disconnect battery.
2.
Remove three nuts that attach the heated windshield power module feed circuits at the rear of the generator.
3.
Remove the power feed circuits from their retaining clips at the fender.
4.
Reposition coolant reservoir by:
^
Removing A/C suction hose clip at fan shroud.
^
Loosening A/C accumulator clamp bolt and positioning accumulator toward upper end of clamp.
^
Removing reservoir plastic retaining rivet and rotating reservoir counterclockwise to provide access to harness pass-through hole by fender.
5.
Pull power module feed circuits to fender pass-through and attach approximately three feet of mechanic's wire to generator end of harness (to
assist in feeding new module harness through fender).
6.
Raise car on hoist.
7.
Remove lower air dam on front of car.
8.
Remove three screws from heated windshield power module bracket.
9.
Lower heated windshield power module and splash shield as one piece.
10.
Disconnect seven-way connector at heated windshield power module.
11.
Pull heated windshield power module feed circuits through fender pass-through and disconnect from mechanic's wire. (Do not pull mechanic's wire
out at this time.)
12.
Remove four screws that attach heated windshield power module cover to module.
NOTE:
Only three screws will be required for new heated windshield power module.