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.
2008 Chevrolet Chevy Express G2500, Van Cargo Extended, 6.0 KFACTORY OEM SERVICE PROCEDURE
ECM Reprogramming
- Record Fuel Filter Life.
- Enable ECM Reprogramming-Refer to Service Programming System (SPS) .
- Reset Fuel Filter Life to the recorded value.
- Start and idle vehicle.
- Using the scan tool, perform the Turbocharger Learn Procedure. Refer to Turbocharger Learn .
- Perform a DPF Regeneration Enable. Refer to Exhaust Particulate Filter Cleaning (LMM DPF Service Regeneration) or Exhaust Particulate Filter Cleaning (LMM DPF Regeneration Enable) .
- If necessary, perform the following:
- Theft Deterrent-Refer to Theft Deterrent Control Module Programming and Setup .
- The Fuel Injector Flow Rate Programming-Refer to Fuel Injector Flow Rate Programming .
- Engine Oil Life Remaining-Use scan tool to reset Engine Oil Life.
IMPORTANT:
It is necessary to record Fuel Filter Life before reprogramming. The ECM reprogramming procedure will reset Fuel Filter Life to zero.
IMPORTANT:
Clear any DTCs that may have set after completing the programming procedure.
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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