B3600 03 Chevrolet Silverado 2500 HD

The BCM detects a voltage that is lower than 0.10 volt on the I/P dimming control circuit.

Action Taken When the DTC Sets

1. The I/P lamps are dim or not illuminated.
2. The I/P lamps will not dim.
3. The stop lamps are always ON.

Conditions for Clearing the DTC

1. The conditions for setting the DTC are no longer present.
2. A history DTC clears after 100 malfunction-free ignition cycles.
3. The BCM receives the clear code command from the scan tool.

Reference Information

Schematic Reference

1. «Interior Lights Dimming Schematics»(ref-277990-S21152813872008012100000)
2. «Exterior Lights Schematics»(ref-277990-S25808994662008012100000)

Connector End View Reference

Lighting Systems Connector End Views

Electrical Information Reference

1. «Circuit Testing»(ref-278019-S01379251932008012100000)
2. «Connector Repairs»(ref-278019-S06982211772008012100000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-278019-S21810776732008012100000)
4. «Wiring Repairs»(ref-278019-S25320832652008012100000)

Scan Tool Reference

1. «Scan Tool Output Controls»(ref-277990-S26654000102008012100000)
2. «Scan Tool Data List»(ref-277990-S24476710372008012100000)
3. «Scan Tool Data Definitions»(ref-277990-S11026152172008012100000)