Glow Plug Control Module: Testing and Inspection

Glow Plug Control Module (GPCM) Programming and Setup (RPO LLY)
The following service procedures require either a programming or a setup event performed for a complete repair.

GPCM Replacement
If the glow plug controller (GPCM) is replaced, the Fuel Injector Flow Rate Programming must be performed. Refer to Fuel Injector Flow Rate Programming.

GPCM Reprogramming
If the glow plug controller (GPCM) needs to be reprogrammed, refer to Fuel Injector Flow Rate Programming.

Setup for Component Replacement
The replacement of some components will require a setup procedure for complete repair.

If any of the following components are replaced, the Fuel Injector Flow Rate Programming must be performed.
^ Fuel Injector
^ Engine control module (ECM)