A Symptoms - Lighting Systems

IMPORTANT: The following steps must be completed before using the symptom tables.

1. Perform Diagnostic System Check - Lighting Systems before using the Symptom Tables in order to verify that there are no DTCs set. Diagnostic System Check - Lighting Systems
2. Review the system description in order to familiarize yourself with the system functions. Refer to Exterior Lighting Systems Description and Operation and to Interior Lighting Systems Description and Operation.

Visual/physical Inspection
^ Inspect for aftermarket devices which could affect the operation of the Lighting System. Refer to Checking Aftermarket Accessories in Diagrams.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent and Poor Connections in Diagrams.

Symptom List
Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:
^ Backup Lamps Always On
^ Backup Lamps Inoperative
^ Courtesy Lamps Always On
^ Courtesy Lamps Inoperative
^ Daytime Running Lamps (DRL) Inoperative (Scandinavia) or Daytime Running Lamps (DRL) Inoperative (Chevy Domestic, Gulf, Pontiac)
^ Fog Lamp Indicator Inoperative (Europe) or Fog Lamp Indicator Inoperative (Pont, Chevy, Domestic, Gulf, Japan)
^ Fog Lamp Indicator Inoperative - Rear
^ Fog Lamps Always On (Domestic, Gulf States, Japan, Europe)
^ Fog Lamps Always On - Rear
^ Fog Lamps Inoperative (Pont, Chevy Domestic, Gulf States, Japan) or Fog Lamps Inoperative (Europe)
^ Fog Lamps Inoperative - Rear
^ Hazard Lamps Always On
^ Hazard Lamps Inoperative
^ Headlamp Door(s) Inoperative
^ Headlamps Always On - Low or High Beam (Japan, Europe) or Headlamps Always On - Low or High Beam (Scandinavia) or Headlamps Always On - Low or High Beam (Pontiac) or Headlamps Always On - Low or High Beam (Chevy Domestic, Gulf States)
^ Headlamps Inoperative - Low Beams (Europe, Japan, ChevyDom, Gulf, Scandanavia) or Headlamps Inoperative - Low Beams (Pontiac)
^ Headlamps Inoperative - High Beams
^ Headlamps Inoperative - Low and High Beams (Pontiac) or Headlamps Inoperative - Low and High Beams (Chevrolet Domestic, Chevrolet Exports)
^ Headlamps Inoperative in Low Light Conditions (Chev Domestic, Gulf, Pontiac Canadian)
^ Headlight Leveling Inoperative
^ High Beam Indicator Inoperative
^ Interior Backlighting Does Not Dim
^ Interior Backlighting Inoperative
^ IP Compartment Lamp Inoperative
^ IP Compartment Lamp Always On
^ Park Lamps Always On (Japan) or Park Lamps Always On (Europe) or Park Lamps Always On (Scandanavia) or Park Lamps Always On (Chevrolet Domestic, Gulf, Pontiac)
^ Park Lamps Inoperative (Chevrolet Domestic, Gulf, Pontiac) or Park Lamps Inoperative (Japan) or Park Lamps Inoperative (Europe, Scandanavia)
^ Park Lamps Inoperative in Low Light Conditions (Chevrolet Dom, Gulf, Pontiac Canadian)
^ Reading Lamp(s) Always On
^ Reading Lamp(s) Inoperative
^ Stop Lamps Always On (Chevrolet) or Stop Lamps Always On (Pontiac)
^ Stop Lamps Inoperative (Chevrolet) or Stop Lamps Inoperative (Pontiac)
^ Turn Signal Lamps and/or Indicators Always On or Flashing (Pontiac) or Turn Signal Lamps and/or Indicators Always On or Flashing (Europe, Sandinavia) or Turn Signal Lamps and/or Indicators Always On or Flashing (Japan) or Turn Signal Lamps and/or Indicators Always On or Flashing (Chevrolet Domestic)
^ Turn Signal Lamps and/or Indicators Inoperative (Chevrolet Domestic) or Turn Signal Lamps and/or Indicators Inoperative (Japan) or Turn Signal Lamps and/or Indicators Inoperative (Europe, Scandinavia) or Turn Signal Lamps and/or Indicators Inoperative (Pontiac)