Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 390 (LIGHTING SYSTEMS)
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8
Section 390 (Lighting Systems)
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Section 390 (Lighting Systems)
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Lighting Systems
- Diagnostic System Check - Lighting Systems
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- DTC B2556: IP Dimmer Switch Voltage Low
- DTC B2641: Twilight Sentinel Delay Signal Voltage Low
- DTC B2646: Sun Load Sensor Voltage Low
- Symptoms - Lighting Systems
- Automatic Lamp Control Inoperative
- Backup Lamps Always On
- Backup Lamps Inoperative
- Courtesy Lamps Always On
- Courtesy Lamps Inoperative
- Daytime Running Lamps (DRL) Always On
- Daytime Running Lamps (DRL) Inoperative
- Fog Lamp Indicator Always On - Rear
- Fog Lamp Indicator Inoperative - Rear
- Fog Lamps Always On
- Fog Lamps Always On - Rear
- Fog Lamps Inoperative
- Fog Lamps Inoperative - Rear
- Hazard Lamps Always On
- Hazard Lamps Inoperative
- Headlamps Always On - Low or High Beam
- Headlamps Inoperative - Low Beams
- Headlamps Inoperative - High Beams
- Headlamps Inoperative - Flash to Pass
- Headlamps Suggested Message On in Daylight Conditions
- Headlamps Suggested Message On in Low Light Conditions - Headlamps On
- High Beam Indicator Always On
- High Beam Indicator Inoperative
- Ignition Lock Cylinder Lamp Always On
- Ignition Lock Cylinder Lamp Inoperative
- Illuminated Entry Lamps Always On
- Illuminated Entry Lamps Inoperative
- Interior Backlighting Does Not Dim
- Interior Backlighting Inoperative
- IP Compartment Lamp Inoperative
- IP Compartment Lamp Always On
- License Lamps Inoperative
- Park Lamps Always On
- Park Lamps Inoperative
- Reading Lamp(s) Always On
- Reading Lamp(s) Inoperative
- Rear Compartment Lamp(s) Always On
- Rear Compartment Lamp(s) Inoperative
- Stop Lamps Always On
- Stop Lamps Inoperative
- Turn Signal Lamps and/or Indicators Always On or Flashing
- Turn Signal Lamps and/or Indicators Inoperative
- Vanity Mirror Lamp(s) Always On
- Vanity Mirror Lamp(s) Inoperative
- Repair Instructions
- Headlamp Switch Replacement
- Interior Lamp Switch Replacement
- Hazard Warning Switch Replacement - On Vehicle
- IP Dimmer Switch Replacement
- Ambient Light Sensor Replacement
- Hazard and Turn Signal Flasher Replacement
- Door Lamp Replacement
- Bulb Replacement - Ignition Cylinder Lamp
- Courtesy Lamp Replacement - Instrument Panel - Left
- Courtesy Lamp Replacement - Instrument Panel - Right
- IP Compartment Lamp Replacement
- IP Compartment Lamp Switch Replacement
- Courtesy Lamp Replacement - Rear Quarter
- Vanity Mirror Lamp Replacement
- Dome Lamp Replacement
- Headlamp Replacement
- Headlamp Bulb Replacement
- Headlamp Aiming
- Fog Lamp Replacement - Front
- Fog Lamp Bulb Replacement - Front
- Fog Lamp Replacement - Rear
- Park/Turn Signal Lamp Bulb Replacement
- High Mounted Stop Lamp Replacement
- Backup Lamp Bulb Replacement
- License Lamp Replacement (LX5 Engine/Steel Lid)
- Tail Lamp Replacement
- Tail Lamp Bulb Replacement
- Description and Operation
- Exterior Lighting Systems Description and Operation
- Exterior Lamps
- Headlamps
- Daytime Running Lamps (DRL)
- Front/Rear Fog Lamps
- Park, Tail and Marker Lamps
- Remote Keyless Entry Exterior Lamp Illumination
- Turn Signal/Hazard Lamps
- Stop Lamp
- Backup Lamps
- Lighting System Indicator(s)
- "HEADLAMPS SUGGESTED - 27" Message
- "TURN SIGNAL ON? - 24" Message
- Battery Run Down Protection/Inadvertent Power
- Interior Lighting Systems Description and Operation
- Exterior Lighting Systems Description and Operation
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.