Odometer Trip/Reset Switch Inoperative

ODOMETER TRIP/RESET SWITCH INOPERATIVE

DIAGNOSTIC FAULT INFORMATION

IMPORTANT: Always perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Testing and Inspection

CIRCUIT/SYSTEM DESCRIPTION
The body control module (BCM) calculates the mileage based on the vehicle speed signal circuit from the engine control module (ECM). The BCM then sends a GMLAN serial data message to the instrument panel cluster (IPC) indicating the value of the odometer. The odometer will display 'error' if an internal BCM memory failure is detected. The odometer displays either miles or kilometers and the desired units can be accessed by pressing the trip/reset switch.

CIRCUIT/SYSTEM TESTING
1. Ignition ON, press the trip reset button.
- If the odometer display does not switch between trip and odometer, replace the instrument panel cluster.

REPAIR INSTRUCTIONS

IMPORTANT: Always perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests

Control Module References for IPC replacement, setup, and programming