Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Chevrolet Express 2500 V8-6.0LFACTORY OEM SERVICE PROCEDURE
Glow Plug Control Module Programming and Setup
Glow Plug Control Module Programming and Setup
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 following procedures must be performed.
* Fuel Injector Flow Rate Programming for fuel injector flow rate programming
* Service Programming System (SPS) for GPCM programming
GPCM Reprogramming
If the glow plug controller (GPCM) needs to be reprogrammed, refer to Service Programming System (SPS). Programming and Relearning
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. Refer to Fuel Injector Flow Rate Programming.
* Fuel injector
* Engine control module (ECM)
* GPCM
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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