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 MANUALSGMC2009SAVANA G2500, VAN CARGO EXTENDED, 6.6 6REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTEXTERIOR LIGHTSLIGHTING SYSTEMS
2009 GMC Savana G2500, Van Cargo Extended, 6.6 6
Lighting Systems
2009 GMC Savana G2500, Van Cargo Extended, 6.6 6SECTION Lighting Systems
- Specifications
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Diagnostic Starting Point - Lighting
- DTC B1395
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- DTC B1480
- DTC B2545
- DTC B2575
- DTC B257A
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Test
- Repair Procedures
- DTC B2580
- DTC B2585
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- DTC B2600
- DTC B2610
- DTC B2615 (with out YF7)
- Diagnostic Instructions (with out YF7)
- DTC Descriptor (with out YF7)
- Diagnostic Fault Information (with out YF7)
- Circuit/System Description (with out YF7)
- Conditions for Running the DTC (with out YF7)
- Conditions for Setting the DTC (with out YF7)
- Action Taken When the DTC Sets (with out YF7)
- Conditions for Clearing the DTC (with out YF7)
- Reference Information (with out YF7)
- Circuit/System Verification (with out YF7)
- Circuit/System Testing (with out YF7)
- Repair Procedures (with out YF7)
- DTC B2615 (with YF7)
- Diagnostic Instructions (with YF7)
- DTC Descriptor (with YF7)
- Diagnostic Fault Information (with YF7)
- Circuit/System Description (with YF7)
- Conditions for Running the DTC (with YF7)
- Conditions for Setting the DTC (with YF7)
- Action Taken When the DTC Sets (with YF7)
- Conditions for Clearing the DTC (with YF7)
- Reference Information (with YF7)
- Circuit/System Verification (with YF7)
- Circuit/System Testing (with YF7)
- Repair Procedures (with YF7)
- DTC B2645
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- DTC B2652
- DTC B3445
- DTC B3600
- DTC B3884
- DTC C0277, C0297, or C0890
- Symptoms - Lighting
- Backup Lamps Malfunction
- Courtesy Lamps Malfunction
- Daytime Running Lamps Malfunction
- Hazard Lamps Malfunction
- Headlamps Malfunction
- Interior Backlighting Malfunction
- Lights On Indicator Malfunction
- Park, License, and/or Tail Lamps Malfunction
- Stop Lamps Malfunction
- Turn Signal Lamps and/or Indicators Malfunction
- Repair Instructions
- Stop Lamp Switch Replacement
- Headlamp Switch Replacement
- Rear Fog Lamp Switch Replacement
- Daytime Running Lamp (DRL) Ambient Light Sensor Replacement
- Sunshade Illuminated Mirror Lamp Bulb Replacement
- Dome Lamp Replacement
- Dome Lamp Bulb Replacement
- Underhood Lamp Replacement
- Sealed Beam Headlamp Replacement
- Headlamp Replacement (V22)
- Headlamp Bulb Replacement
- Headlamp Capsule Replacement (Minus V22)
- Headlamp Aiming
- Rear Fog Lamp Replacement
- Rear Fog Lamp Bulb Replacement
- Front Position Lamp Replacement
- Repeater Lamp Replacement
- Front Side Marker Lamp Replacement (T90)
- Front Side Marker Lamp Replacement (X88/Z88)
- Parking and Turn Signal Lamp Replacement
- High Mount Stop Lamp Replacement
- Cargo Lamp Replacement
- Backup Lamp Replacement
- Backup Lamp Bulb Replacement
- Rear License Plate Lamp Replacement
- Tail Lamp Replacement
- Description and Operation
- Exterior Lighting Systems Description and Operation
- Exterior Lamps
- Low Beam Headlamp Operation
- High Beam Headlamp Operation
- Flash to Pass (FTP)
- Daytime Running Lamps (DRL) and Automatic Lamp Control (ALC)
- HDLPS Suggested Indicator
- Lights ON Warning
- Park, Tail, Marker and License Lamps
- Turn Signal Lamps
- Hazard Lamps
- Stop Lamps
- Backup Lamps
- Rear Fog Lamps
- Battery Rundown Protection/Inadvertent Power
- Interior Lighting Systems Description and Operation
- Exterior Lighting Systems Description and Operation
- Special Tools and Equipment
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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.