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 MANUALSCHEVROLET2006SUBURBAN K2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 630 (LIGHTING SYSTEMS)
2006 Chevrolet Suburban K2500, 6.0 U
Section 630 (Lighting Systems)
2006 Chevrolet Suburban K2500, 6.0 USECTION Section 630 (Lighting Systems)
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. 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 B0951: Headlamp On Indicator Control Circuit
- DTC B1480: Inadvertent Power Supply Voltage Circuit
- DTC B2527: Front Fog Lamp Switch Signal Circuit Is Shorted To Ground
- DTC B2530: Front Fog Lamp Relay Control Circuit
- DTC B2540: Rear Fog Lamp Relay Control Circuit
- DTC B2550: Backup Lamp Supply Voltage Circuit
- DTC B2575: Headlamp Low Beam Relay Control Circuit
- DTC B2580: High Beam Headlamp Relay Control Circuit
- DTC B2585: Park Lamp Relay Control Circuit
- DTC B2600: DRL Relay Control Circuit
- DTC B2610: Dimming Control Circuit
- DTC B2615: Courtesy Lamp Supply Voltage
- DTC B2620: Dimming Input Voltage
- DTC B2625: LED Dimming Signal Circuit Is Shorted To Ground
- DTC B2645: Ambient Light Sensor Signal Voltage
- DTC B3801: Courtesy/Dome Lamps
- DTC B3802: BCM Receives Headlamps ON Signal Request Without A Park Lamp ON Signal Request
- Symptoms-Lighting Systems
- Backup Lamps Always On
- Backup Lamps Inoperative
- Cargo Lamp Always On
- Cargo Lamp Inoperative
- Clearance Lamps Inoperative
- Courtesy Lamps Always On
- Courtesy Lamps Inoperative
- Daytime Running Lamps (DRL) Always On
- Daytime Running Lamps (DRL) Inoperative
- Exterior Courtesy Lamp(s) Always On
- Exterior Courtesy Lamp(s) Inoperative
- Fog Lamp Indicator Inoperative
- Fog Lamp Indicator Inoperative-Rear
- Fog Lamps Always On
- Fog Lamps Inoperative
- Fog Lamps Always On-Rear
- Fog Lamps Inoperative-Rear
- Hazard Lamps Always On
- Hazard Lamps Inoperative
- Headlamps Always On-Low or High Beam
- Headlamps Inoperative-High Beams
- Headlamps Inoperative-Low Beams
- Headlamps Inoperative-Low and High Beams
- Headlamps Inoperative-Flash to Pass
- High Beam Indicator Always On
- High Beam Indicator Inoperative
- Interior Backlighting Does Not Dim
- Interior Backlighting Inoperative
- Instrument Panel (I/P) Compartment Lamp Inoperative
- Instrument Panel (I/P) Compartment Lamp Always On
- Park, License, and Tail Lamps Always On
- Park, License, and Tail Lamps Inoperative
- Reading Lamp(s) Inoperative
- Roof Beacon Lamp Always On
- Roof Beacon 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
- Vanity Mirror Lamp(s) Inoperative
- Repair Instructions
- Stop Lamp Switch Replacement
- Headlamp Switch Replacement
- Headlamp Leveling Switch Replacement
- Lamp Switch Assembly Replacement-Front Fog Lamp and Cargo Lamp
- Fog Lamp Switch Replacement-Rear
- Ambient Light Sensor Replacement
- Hazard and Turn Signal Flasher Replacement
- Courtesy Lamp Replacement-Exterior
- Courtesy Lamp/Reflector Replacement-Door
- Instrument Panel (I/P) Compartment Lamp Switch Replacement
- Dome Lamp Replacement
- Underhood Lamp Replacement
- Headlamp Assembly or Headlamp Bulb Replacement (Old Style)
- Headlamp Assembly or Headlamp Bulb Replacement (New Style GMC)
- Headlamp Assembly or Headlamp Bulb Replacement (New Style Chevy)
- Headlamp Aiming
- Fog Lamp Replacement-Front (Old Style)
- Fog Lamp Replacement-Front (New Style GMC)
- Fog Lamp Replacement-Front (New Style Chevrolet)
- Fog Lamp Bulb Replacement-Front (Old Style)
- Fog Lamp Bulb Replacement-Front (New Style GMC)
- Fog Lamp Bulb Replacement-Front (New Style Chevrolet)
- Fog Lamp Bulb Replacement-Rear
- Fog Lamp Aiming Procedure
- Park/Turn Signal Lamp Replacement (Old Style)
- Park/Turn Signal Lamp Replacement (New Style)
- Marker Lamp Replacement-Roof (Center)
- Marker Lamp Replacement-Roof (Outer)
- Marker Lamp Bulb Replacement-Roof (Center)
- Marker Lamp Bulb Replacement-Roof (Outer)
- High Mounted Stop Lamp Replacement
- License Lamp Replacement (Pickup W/O Bumper)
- Tail/Turn Signal Lamp Replacement (Except Stepside)
- Tail/Turn Signal Lamp Replacement (Stepside)
- Description and Operation
- Special Tools and Equipment
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
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.