Installation Procedure
- Connect the body wiring harness connector. Push the connector through the hole in the roof in order to install the electrical connector.
- Install the high mount stop lamp to the vehicle.NOTE: Refer to FASTENER NOTICE in GM VEHICLES CAUTIONS & NOTICES article.
- Install the screws that retain the high mount stop lamp to the roof.
Tighten
Tighten the high mount stop lamp screws to 1.4 N.m (12 lb in).