Cutlass Supreme FWD V6-189 3.1L (1989)
Power Window Switch: Technical Service Bulletins
Windows - Replacement of Power Window Switch
SUBJECT
POWER WINDOW SWITCH REPLACEMENT
(INSTALLATION INSTRUCTIONS)
MODELS/YEARS
1988-89 CUTLASS SUPREME MODELS
NUMBER:
89-T-170
CORP.REF.NO: 031063
DATE:
November 1990
SECTION:
10
CONDITION:
The 1988 and early 1989 Cutlass Supreme models used a power window/power door lock switch assembly with a separate module attached. The module
contained the electronics to operate the power window "express down" feature.
In mid-year 1989, the switch was redesigned, with the "express down" electronics built into the switch body, eliminating the separate module. The new
switch is interchangeable with the old switch, by simply cutting the module off the old switch, and leaving the module in the door.
INSTALLATION PROCEDURE:
1.
If the power window/power door lock switch assembly needs to be replaced, remove the old switch assembly from the door, following the
instructions in Section 5W (1988) or Section 10-5 (1989) of the Body Section of the Service Manual. Disconnect the wire harness connectors.
2.
If the switch assembly has a module attached, cut off the wire harness to the module, and discard the old switch assembly. Secure the module wire
to the door trim panel with tape, so that it will not rattle.
3.
If there is no module attached to the switch, the parts are interchangeable, and no further action is required.
4.
Install the wire harness connectors, and reinstall the new switch assembly into the door.
If the power door locks operate backwards after installing the new switch, follow the procedure below
1.
Remove the switch assembly from the door.
2.
Remove the connector to the power door lock portion of the switch assembly, Remove the terminals in cavity "C" and "E" and exchange them.
NOTE:
This step is not necessary on all switches. There were two designs used, with different power door lock switch positions.
3.
Reinstall the switch assembly into the door.
