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.
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HOMESERVICE MANUALSPONTIAC2008GRAND PRIX V6-3.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTECHNICAL SERVICE BULLETINS
2008 Pontiac Grand Prix V6-3.8L
Computers and Control Systems: Technical Service Bulletins
2008 Pontiac Grand Prix V6-3.8LSECTION Technical Service Bulletins
- Customer Interest
- By Symptom
- All Technical Service Bulletins
- Electrical - Aftermarket Interface Devices Causing Issues
- Engine - THIS BULLETIN HAS BEEN CANCELED
- A/T Controls - Snapshot Data With Tech2(R) Information
- Electrical - MIL ON/DTC's Set By Various Control Modules
- Electrical - Intermittent MIL/DTC P2138/Reduced Power
- Electrical - MIL ON/DTC's P2138/P1125/P2101/P2120/P2125
- A/T Control - DTC P0756 Diagnostic Tips
- Electrical - Reducing Intermittent Electrical Concerns
- A/T- Slips/Overheats/Won't Shift/MIL ON/DTCs P0218/P0894
- A/T - Harsh Shifts/Slipping/DTCs P0741/P0742/P0757/P842
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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.