Scan Tool Data List
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Body Control Module (BCM) Scan Tool Output Controls
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Ignition On/Engine Off | |||
| Rear Defog Relay | Outputs | On/Off | Off |
HVAC Control Module Scan Tool Output Controls
| Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
| Ignition On/Engine Off | |||
| Rear Defrost Switch | Input/Output | On/Off | Off |