Removal Procedure

If equipped, remove the battery cover.
Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection .
Disconnect the 2 wiring harness plugs (4).

Fig 1: Glow Plug Control Module
Courtesy of GENERAL MOTORS COMPANY
Remove the glow plug control module nut (1).
Pull the module forward at the top and slide upward out of the glow plug control module bracket.