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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 897 (LIGHTING SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESSCAN TOOL DATA LIST
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Scan Tool Data List
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Scan Tool Data List
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2007 GMC Savana Special, 2007 GMC Savana Camper Special, 2007 GMC Savana, 2007 Chevrolet RV Cutaway, and 2007 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM)
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Ignition ON/Engine OFF/Vehicle in PARK/Park Brake Released/Headlamps in AUTO/All doors closed | |||
| Accessory Switch | Input | Active/Inactive | Inactive |
| Backup Lamps | Output | On/Off | Off |
| Battery Voltage | Data | Volts | Varies |
| Courtesy Lamp Switch | Input | On/Off | Off |
| Daytime Running Lamps | Output | Active/Inactive | Inactive |
| Dimming Potentiometer | Data | Volts | Varies |
| Dimming Potentiometer R | Data | Volts | 5.0 |
| Driver Door Ajar Sw. | Input | On/Off | Off |
| Flash to Pass Switch | Input | On/Off | Off |
| Headlamp Switch | Input | Active/Inactive | Inactive |
| Headlamps On Indicator | Output | On/Off | Off |
| High Beam Relay | Output | On/Off | Off |
| High Beam Switch | Input | On/Off | Off |
| Inadvertent Power | Output | On/Off | Off |
| Interior Lamp Defeat Switch | Input | Active/Inactive | Inactive |
| Interior Lamp Output | Output | On/Off | Off |
| Key In Ignition | Input | Yes/No | Yes |
| Low Beam Output | Output | On/Off | Off |
| Park Brake Switch | Input | Set/Released | Released |
| Park Lamp Relay | Output | On/Off | On/Off |
| Park Lamp Switch | Input | Active/Inactive | Inactive |
| Passenger Door Ajar Sw. | Input | On/Off | Off |
| Run/Crank | Input | Active/Inactive | Active |
Instrument Panel Cluster (IPC) Module
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Ignition ON/Engine OFF/Vehicle in PARK/Park brake RELEASED/Headlamps in AUTO/All doors/tailgate closed | |||
| DRL Lamp | Input/Output | On/Off | Off |
| High Beam Lamp | Input/Output | On/Off | Off |
| Left Turn Input | Input/Output | Open/Closed | Open |
| Right Turn Input | Input/Output | Open/Closed | Open |
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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.