GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


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

Installation Procedure

Notice: Installation of the proper relay is critical. If an enhanced relay -- equipped with a diode -- is installed into a position requiring a standard relay -- equipped without a diode -- excessive current will damage any components associated with the relay or its associated circuits.


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