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 MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 663 (COMPUTER/INTEGRATING SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESSCAN TOOL DATA LIST
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Scan Tool Data List
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Scan Tool Data List
WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Scan Tool Data List
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| BCM Scan Tool Data List Operating Conditions: Ignition ON, Engine OFF |
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| Battery Voltage | Data | Volts | 12.5 |
| SWC Switch Voltage | Data | Volts | 0 |
| 8 Digit GM Part Number | ID information | 8 digits | xxxxxxxx |
| Julian Date of Build | ID Information | 3 digits | xxx |
| Year Module Built | ID information | 4 digits | xxxx |
| Driver Door Ajar Switch w/o DDM | Inputs | On/Off | Off |
| Ignition 0 | Inputs | On/Off | On |
| Ignition 1 | Inputs | On/Off | On |
| Ignition Accessory | Inputs | Active/Inactive | Active |
| Key in Ignition | Inputs | Yes/No | Yes |
| Left Rear/Rear Cargo Door Ajar Switch | Inputs | On/Off | Off |
| Passenger Door Ajar Switch w/o PDM | Inputs | On/Off | Off |
| Right Rear Door Ajar Sw. | Inputs | On/Off | Off |
| RAP Relay | Outputs | On/Off | On |
| SWC Switch Power | Outputs | On/Off | On |
| DDM/FPDM Scan Tool Data List Operating Conditions: Ignition ON, Engine OFF |
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| Door Ajar Switch | Inputs | On/Off | Off |
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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.