GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 401242  Size: SH
  1. Remove the cover from the # 1 underhood electrical center.
  2. Remove the horn relay from the electrical center. Refer to Electrical Center Identification Views in Wiring Systems.

Installation Procedure


    Object Number: 401242  Size: SH
  1. Install the horn relay to the electrical center. Refer to Electrical Center Identification Views in Wiring Systems.
  2. Install the cover to the # 1 underhood electrical center.