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 BASEREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 226 (ENGINE COOLING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESSCAN TOOL DATA LIST
2008 Pontiac Grand Prix Base
Scan Tool Data List
2008 Pontiac Grand Prix BaseSECTION Scan Tool Data List
WARNING: This page is about a different car, the 2007 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
Powertrain Control Module (PCM) 3.8 L
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Ignition Switch in RUN/Engine running/Automatic Transmission in PARK/Air Conditioner is OFF | |||
| ECT | Eng 1, 2, EGR, EVAP, Cat, HO2S, Misfire, AIR | °C/°F | Varies |
| Engine Hot Lamp Circuit Status | ODM | OK/Fault/Invalid State | OK |
| Engine Hot Lamp | ENG2 | On/Off | Off |
| Fan High Speed | ENG2 | On/Off | Off |
| Fan Low Speed | ENG2 | On/Off | Off |
| FC Relay 1 Circuit Status | ODM | Fault/OK | OK |
| FC Relay 2 and 3 Circuit Status | ODM | Fault/OK | OK |
RENDER: 1.0x
NO RELATED
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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.