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 666 (LIGHTING SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESDIAGNOSTIC CODE INDEX
2006 Chevrolet Suburban K2500, 6.0 U
Diagnostic Code Index
2006 Chevrolet Suburban K2500, 6.0 USECTION Diagnostic Code Index
WARNING: This page is about a different car, the 2006 GMC Sierra, 2006 GMC Cab & Chassis Sierra, 2006 Chevrolet Silverado, and 2006 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSTIC CODE INDEX
| DTC | Description |
|---|---|
| DTC B1480 | Battery Rundown Protection Circuit |
| DTC B2527 | Front Fog Lamps Circuit Low |
| DTC B2537 | Rear Fog Lamps Circuit Low |
| DTC B2550 | Backup Lamps Control Circuit |
| DTC B2575 | (Left or generic) Headlamp Control Circuit |
| DTC B2580 | (Left or generic) Headlamp High Beam Control Circuit |
| DTC B2585 | (Left or generic) Park Lamp Control Circuit |
| DTC B2600 | Daytime Running Lamp Control 1 (left or system) Circuit |
| DTC B2610 | Passenger Compartment Dimming 1 (cluster, etc.) Circuit |
| DTC B2615 | Passenger Compartment Dimming 2 (courtesy Lamps, etc.) Circuit |
| DTC B2620 | Display Dimming Pulse Width Modulation (PWM) Input Circuit |
| DTC B2625 | Display Dimming Pulse Width Modulation (PWM) Output Circuit |
| DTC B2645 | Ambient Light Sensor Circuit |
| DTC B3801 | Passenger Compartment Lamp Request Circuit |
| DTC B3802 | Park Lamps Request Circuit |
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.