GM 15289426
Turn Signal Switch

You need to take off the steering column trim covers to change the Turn Signal Switch. Replace the abrasion sleeve to the steering column wire harness assembly while keeping track of its connector for reinstall later. Move the wire harness assembly free from its strap and remove the Turn Signal Switch connection with the inflatable restraint steering wheel module coil. Gently push both cables of the Turn Signal Switch from its bulkhead connector housing. Take bolts from their base in the Turn Signal Switch unit then remove this switch from the steering column. Fit the Turn Signal Switch onto the steering column tilt head device with its electrical contact surface touching the turn signal cancel cam element. Insert the bolts a and b through the Turn Signal Switch and fasten them by turning 1 nm (11 lb in). Insert the two connectors of the Turn Signal Switch into the bulkhead and connect it to the module coil connector of the inflatable restraint steering wheel column assembly. Reinsert the abrasion sleeve onto the steering column wire harness assembly but keep all wires of the ignition lock cylinder outside through its middle area. After connecting both sides of the turn signal assembly to the bulkhead connector place the wire harness assembly into the strap then put back both trim panels.

Before you replace the Turn Signal Switch you must turn off the SIR system. Reinstall the abrasion sleeve into the steering column wire harness assembly before covering it with the trim parts and making note of the connector placement. First disconnect the wire harness assembly from its strap and then separate the turn signal switch assembly connector from the SIR system coil connector. Push both connectors of the turn signal switch unit out from the bulkhead connection. Use a socket wrench to remove two head screws from behind the turn signal switch and lift off the complete unit from the steering column tilt head assembly. Set the turn signal switch assembly onto the steering column tilt head assembly to make sure its electrical contact touches the turn signal cancel cam assembly. Endeavor to fix the parts securely by threading both pan head screws at 1 N.m torque into the parts. Push the two connectors into the bulkhead connector and join the turn signal switch assembly's connector to SIR coil connector. Place the abrasion sleeve back onto the steering column wire harness assembly with attention to placing the ignition lock cylinder case wiring and connector properly. The upper and lower trim pieces need to be installed before placing the wire harness back in and turning on the SIR function.

Slide the two connectors of the turn signal multifunction switch assembly into the bulkhead connector and connect the turn signal multifunction switch connector to the inflatable restraint steering wheel module coil connector.

Detach the wire harness assembly from the wire harness strap and disconnect the turn signal and multifunction switch assembly connector from the SIR system coil connector.

Secure the assembly with the two pan head tapping screws, tightening them to 1 Nm (11 inch lbs.).