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 PASSENGER EXTENDED, 5.0 MREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 919 (LIGHTING SYSTEMS)
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 M
Section 919 (Lighting Systems)
2001 Chevrolet Chevy Express G2500, Van Passenger Extended, 5.0 MSECTION Section 919 (Lighting Systems)
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2001 GMC Yukon XL, 2001 GMC Yukon, 2001 GMC Sierra, 2001 GMC Cab & Chassis Sierra, and 2001 GMC C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic Wiring Diagrams
- Headlights Wiring Schematics
- Headlights/Daytime Running Lights (DRL) Wiring Schematics
- Fog Lights Wiring Schematics
- Exterior Lights Wiring Schematics (L/D Trailer Wiring)
- STOP LPS, HAZ LP and TURN Fuses, Stoplamp Switch, VEH STOP and CHMSL Fuses
- Park/Turn Signal Lamps, RT TURN Fuse and LT TURN Fuse
- Park Lamp Relay, FR PRK TRL PRK, LR PRK, and RR PRK Fuses
- INT PRK Fuse, Roof Marker Lamps and Clearance Lamps
- Junction Block - Rear Lamps Cargo Lamp and CHMSL
- Tail/Stop Lamps, Rear Turn Signal Lamps and License Lamps
- Exterior Illumination Lamps Relay and Exterior Illumination Lamps
- Cargo Lamp Switch Inadvertent Power Realay
- SEO 1 and SEO 2 Fuses, Roof Beacon Relay and Roof Beacon Switch
- TRL L TRN and TRL R TRN Fuses
- Camper Inline Connector and Trailer Inline Connector
- Exterior Lights Wiring Schematics (H/D Trailer Wiring)
- STOP LPS, HAZ LP and TURN Fuses
- LT TURN Fuse, RT TURN Fuse, and Turn Signal Lamps
- PARK LPS Fuse, Headlamp Switch, FR PRK, TRL PRK, LR PRK and RR PRK Fuses
- INT PRK Fuse, Roof Marker and Clearance Lamps
- Tail/Stop Lamps, License Lamps, Cargo Lamps and CHMSL (Pickup)
- License Lamps, Tail/Stop Lamps and Turn Signal Lamps - Utility
- Exterior Illumination Lamps
- Cargo Lamps and Inadvertent Power Relay
- Roof Beacon Switch and Relay
- TRL R TURN and L TURN Fuses and Trailer Connector
- Camper Inline Connector and Trailer Inline Connector
- Backup Lamp Wiring Schematics (Pickup)
- Backup Lamp Wiring Schematics (Utility)
- Interior Lights Wiring Schematics (Base Pickup)
- Interior Lights Wiring Schematics (Uplevel Pickup)
- Interior Lights Wiring Schematics (Base Utility)
- Interior Lights Wiring Schematics (Uplevel and Luxury (Y91) Utility)
- Inadvertent Power Relay, Door Courtesy Lamps, IP Courtesy Lamps, and CTSY LP Fuse - Uplevel
- Inadvertent Power Relay, Courtesy Lamp Module, and CTSY LP Fuse - Luxury
- Door Courtesy Lamps and IP Courtesy Lamps - Luxury
- Vanity Mirror Lamps and Map Lamp Assemblies - Uplevel
- Vanity Mirror Lamps and Map Lamp Assemblies - Luxury
- Courtesy Lamp Relay, Underhood Lamp, and IP Compartment Lamp
- PARK LPS Fuse, Parklamp Relay, Door Lock Switch-Driver, Heated Seat Switches, and Ashtray Lamp
- Mini Wedge (Door Jamb Switch) LF and Mini Wedge (Door Jamb Switch) RF
- Door Lock Switch- Front Passenger, Window Switches LR/RR, and Sunroof Switch
- Mini Wedge (Door Jamb Switch) LR, Mini Wedge (Door Jamb Switch) RR, Bezel Lamp, and Cigar Lighter
- Door Ajar Switches - Cargo or Liftgate
- Rear Seat Audio Controller and Radio
- Interior Lights Dimming Wiring Schematics (Pickup)
- Interior Lights Dimming Wiring Schematics (Utility)
- Component Locator
- Lighting Systems Component Views
- Hood
- LF Corner of the Bumper
- RF Corner of the Vehicle - Lighting Components
- LF Corner of the Vehicle - Lighting Components
- Center Rear of the Roof (Pickup)
- Roof Lamps
- Steering Column Components
- Left Side of the I/P - Switches
- Lower Left Side of the I/P Components
- Center of the I/P - Accessory Switches
- Lower Center of the I/P Components
- Instrument Panel Compartment Lamp
- Dome/Reading Lamp (Regular Cab)
- Overhead Console (Extended Cab)
- Driver Door Panel Components - Courtesy Lamp
- Manual Transmission (Heavy Duty)
- Manual Transmission (Light Duty)
- A/T External Components
- Rear of the Vehicle Components (Pickup)
- Rear Bumper (Utility)
- Center of the Rear Bumper (Pickup)
- License Lamp (without Bumper)
- Trailer Wiring Harness
- LR Frame - Camper Provision
- Lighting Systems Connector End Views
- Ambient Light Sensor
- Ashtray Lamp
- Backup Lamp - Left, Right
- Backup Lamp - Left, Right (Sportside Only)
- Backup Lamp Switch (Manual)
- Bezel Lamp
- Bin Lamp (Luxury)
- Camper Harness Inline Connector
- Cargo/CHMSL Lamp (Pickup Only)
- Center High Mounted Stop Lamp (CHMSL)
- Clearance Lamps (Roof)
- Clearance Lamp - LF,LR (Dual Rear Wheel)
- Clearance Lamp - RF,RR (Dual Rear Wheel)
- Console Compartment Lamp (Luxury)
- Courtesy Lamp - Left, Right
- Courtesy Lamp Module (Luxury)
- Courtesy/Reading Lamp - Middle (Uplevel Utility/Sub)
- Courtesy/Reading Lamp - Rear (Uplevel)
- Daytime Running Lamp (DRL) - Left, Right
- Dimmer Switch
- Dome Lamp
- Dome Lamp (Utility/Suburban/Crewcab-Base)
- Dome Lamp - Rear (Suburban)
- Dome/Reading Lamp - Middle/Rear (Luxury)
- Door Ajar Switch - Left/Right - Cargo
- Door Courtesy Lamp - Driver/Passenger/ LR
- Door Courtesy Lamp - RR
- Fog/Cargo Lamp Switch
- Fog Lamp - LF, RF
- Headlamp - Low Beam - Left
- Headlamp - Low Beam - Right
- Headlamp - High Beam - Left
- Headlamp - High Beam - Right
- I/P Compartment Lamp
- License Lamp - Left
- License Lamp - Right
- Map Lamps - Console
- Marker Lamp - LF
- Marker Lamp - RF
- Park/Turn Signal Lamp - LF
- Park/Turn Signal Lamp - RF
- Reading Lamps - Overhead Console (Uplevel Pickup))
- Roof Beacon Relay
- Roof Beacon Switch
- Roof Marker Lamps - LH,RH (Pickup)
- Stoplamp Switch
- Stop/Park Lamp, LH (Sportside Only)
- Stop/Park Lamp, RH (Sportside Only)
- Tail/Stop Lamp - Left
- Tail/Stop Lamp - Right
- Trailer Connector (Light Duty)
- Trailer Connector (Heavy Duty)
- Turn Lamp, LH (Uplevel Pickup/Utility)
- Turn Lamp, RH (Uplevel Pickup/Utility)
- Turn Lamp, LH (Sportside Only)
- Turn Lamp , RH (Sportside Only)
- Turn Signal Lamp - LR (Pickup)
- Turn Signal Lamp - RR (Pickup)
- Underhood Lamp
- Vanity Mirror Lamp - Left/Right
- Tailgate Lamp Assembly (Dual Rear Wheel)
- Junction Block - Rear Lamps - C1
- Junction Block - Rear Lamps - C2
- Junction Block - Rear Lamps - C3
- Junction Block - Rear Lamps - C4
- Lighting Systems Component Views
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Lighting Systems
- Diagnostic System Check - Lighting Systems
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Code Index
- Diagnostic Trouble Code (DTC) List
- DTC B1480
- DTC B2527
- DTC B2577
- DTC B2585
- DTC B2613
- DTC B2617
- DTC B2618
- DTC B2642
- DTC B2643
- DTC B2647
- DTC B2648
- Symptoms - Lighting Systems
- Backup Lamps Always On
- Backup Lamps Inoperative
- Cargo Lamp Always On
- Cargo Lamp Inoperative
- Cargo Lamp On Indicator Always On
- Cargo Lamp On Indicator Inoperative
- Clearance Lamps Inoperative
- Courtesy Lamps Always On (Without RPO Y91)
- Courtesy Lamps Always On (With RPO Y91)
- Courtesy Lamps Inoperative (Without RPO Y91)
- Courtesy Lamps Inoperative (With RPO Y91)
- Daytime Running Lamps (DRL) Always On
- Daytime Running Lamps (DRL) Inoperative
- Daytime Running Lamps (DRL) On with Park Brake Applied
- Exterior Courtesy Lamps Always On
- Exterior Courtesy Lamps Inoperative
- Fog Lamp Indicator Inoperative (Domestic)
- Fog Lamp Indicator Inoperative (Export, Rear)
- Fog Lamps Always On (Front)
- Fog Lamps Always On (Export, Rear)
- Fog Lamps Inoperative (Front)
- Fog Lamps Inoperative (Export, Rear, Pickup)
- Fog Lamps Inoperative (Export, Rear, Utility)
- Hazard Lamps Inoperative
- Headlamps Inoperative - Low Beams
- Headlamps Inoperative - High Beams
- Low and High Beams Headlamps Inoperative
- Headlamps Flash to Pass Inoperative
- Headlamps Inoperative in Low Light Conditions
- Headlamps On in Daylight Conditions
- Headlight Leveling Inoperative
- High Beam Indicator Always On
- High Beam Indicator Inoperative
- Interior Backlighting Does Not Dim
- Interior Backlighting Inoperative
- Instrument Panel Compartment Lamp Inoperative
- Park Lamps Inoperative
- Reading Lamp 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
- Underhood Lamp Inoperative
- Vanity Mirror Lamp Always On
- Vanity Mirror Lamp Inoperative
- Repair Instructions
- Headlamp Switch Replacement
- Headlamp Leveling Actuator Switch Replacement
- Fog Lamp and Cargo Lamp Switch Assembly Replacement
- Rear Fog Lamp Switch Replacement
- Lamp Control Module Replacement
- Daytime Running Lamps (DRL) Relay Replacement
- Hazard Lamp and Turn Signal Lamp Flasher Replacement
- Headlamp Assembly or Headlamp Bulb Replacement (Old Style)
- Headlamp Aiming
- Front Fog Lamp Replacement (GMC Pickup)
- Front Fog Lamp Bulb Replacement (Old Style)
- Rear Fog Lamp Replacement
- Rear Fog Lamp Bulb Replacement
- Fog Lamp Aiming
- Parking and Turn Signal Lamp Replacement (Old Style)
- High Mount Stop Lamp Replacement (Pickup)
- High Mount Stop Lamp Replacement (Utility)
- Rear License Plate Lamp Replacement (W/ Step Bumper)
- Rear License Plate Lamp Replacement (Pickup W/O Bumper)
- Tail/Turn Signal Lamp Replacement (Pickup Except Step Side)
- Tail/Turn Signal Lamp Replacement (Pickup Step Side)
- Ambient Light Sensor Replacement
- Underhood Lamp Replacement
- Outside Rearview Mirror Courtesy Lamp Replacement
- Console Lamp Replacement
- Door Courtesy Lamp and Reflector Replacement
- Instrument Panel Compartment Lamp Replacement
- Ashtray Lamp Replacement
- Sunshade Illuminated Mirror Lamp Bulb Replacement
- Dome Lamp Replacement
- Description and Operation
- Special Tools and Equipment
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
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Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.