Installation Procedure

IMPORTANT: The cable mechanisms and/or the cam mechanisms, on both sides of the glass, contain a set of timing holes. These holes are aligned in the CLOSED position of the sunroof glass panel. These holes are located on the side opposite the rear screw hole, which is used in order to mount the sunroof glass panel. When installing a new sunroof position encoding (SPE) switch, set the sunroof glass panel to the CLOSED position.

Use a flat-bladed tool if you adjust the cable mechanism and/or the cam mechanism in order to align the cable and/or the cam timing holes.
When the timing holes are aligned, insert a pin with diameter 0.0317 mm (1/8 in) or a drill bit (1) into each set of the timing holes. Use tape in order to hold each pin in place.

Fig 1: Inserting Pin With Diameter Drill Bit Into Each Set Of Timing Holes
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: The SPE switch comes from the factory with a position lock pin that is installed on top of the switch. This locks the timing gears in place. Do not remove the position lock pin until after the SPE switch and the actuator are installed.
Keeping the position lock pin on the new SPE switch, align the switch over the drive cables.
Apply pressure to the SPE switch until the switch is completely seated.
If the switch does not slide into position, the ridges on the drive cable housings will not go into the grooves on the back of the SPE switch. Lift each cable into the switch, and press down on the assembly until the assembly is completely seated.

Fig 2: Installing SPE Switch
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the screw which secures the SPE switch to the sunroof module.
Tighten

Tighten the screw to 3.4 N.m (30 lb in).
Connect the electrical connector to the SPE switch.
Install the sunroof motor. Refer to Power Sunroof Motor Replacement .
Remove the position lock pin (1).
Remove the 2 alignment pins from the cable mechanisms and/or from the cam mechanisms.
Install the sunroof module, but do not install the headliner until after the sunroof operation has been verified. Refer to Power Sunroof Module Replacement .
Verify the operation of the sunroof module.
Install the sunroof glass panel. Refer to Sunroof Glass Panel Replacement .
Install the headliner. Refer to HEADLINER REPLACEMENT (PICKUP) or HEADLINER REPLACEMENT (UTILITY) or HEADLINER REPLACEMENT (EXTENDED CAB PICKUP) .

Fig 3: Position Lock Pin
Courtesy of GENERAL MOTORS CORP.