Lighting Systems for GMC Truck TopKick C-Series (Conventional) C6/C7/C8 2006

All Component Locator

• Lighting Systems Component Views

All Description and Operation

• Exterior Lighting Systems Description and Operation
• Interior Lighting Systems Description and Operation

All Special Tools and Equipment

• Special Tools

All Visual Identification

• Lighting Systems Connector End Views

Cleaning, Inspection, and Adjustment

• Headlamp Aiming

Diagnostic Procedures

• Backup Lamps Always On
• Backup Lamps Inoperative
• Daytime Running Lamps (DRL) Indicator Inoperative
• Daytime Running Lamps (DRL) Inoperative
• Diagnostic Starting Point - Lighting Systems
• Dome Lamps Always On
• Dome Lamps Inoperative
• Hazard Lamps Inoperative
• Headlamps Inoperative - High Beams
• Headlamps Inoperative - Low Beams
• High Beam Indicator Inoperative
• Interior Backlighting Does Not Dim
• Interior Backlighting Inoperative
• Low and High Beams Headlamps Inoperative
• Marker Lamps Always On
• Marker Lamps Inoperative
• Marker Lamps Inoperative - Output at Trailer/Upfitter Connector
• Park Lamps Inoperative - Output at Trailer/Upfitter Connector
• Park, License, and Tail Lamps Inoperative
• Stop Lamps Always On
• Stop Lamps Inoperative
• Stop Lamps Inoperative - Output at Trailer/Upfitter Connector
• Symptoms - Lighting Systems
• Turn Signal Lamps and/or Indicators Inoperative
• Turn Signal Lamps Inoperative - Output at Trailer/Upfitter Connector

Diagnostic Trouble Codes

• DTC P0504

Electrical/Electronic Schematic Diagrams

• Exterior Lights Schematics
• Headlights/Daytime Running Lights (DRL) Schematics
• Interior Lights Dimming Schematics
• Interior Lights Schematics

Mechanical Specifications

• Fastener Tightening Specifications

Removal, Installation, and Replacement

• Daytime Running Lamp (DRL) Diode Replacement
• Daytime Running Lights (DRL) Control Module Replacement
• Dome and Reading Lamp Bulb Replacement
• Dome Lamp Replacement
• Hazard and Turn Signal Flasher Replacement
• Headlamp Switch Replacement
• Luminescent Lamp Replacement - Outside Mirror
• Parking and Turn Signal Lamp Bulb Replacement
• Parking and Turn Signal Lamp Replacement
• Roof Marker Lamp Bulb Replacement
• Roof Marker Lamp Replacement
• Sealed Beam Headlamp Replacement
• Stop Lamp Switch Replacement
• Tail Lamp Bulb Replacement
• Tail Lamp Replacement