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 C2500, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 635 (BODY CONTROL SYSTEM)
2006 Chevrolet Suburban C2500, 6.0 U
Section 635 (Body Control System)
2006 Chevrolet Suburban C2500, 6.0 USECTION Section 635 (Body Control System)
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.
- Schematic Wiring Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Body Control System
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) List
- DTC B1000: Internal Malfunction
- DTC B1001: ID/VIN Data Mismatch
- DTC B1004: KAM In The Module Has Been Reset
- DTC B1007: EEPROM Error
- DTC B1009: EEPROM Error
- DTC B1440: Monitored Ignition Switch Circuit Has Malfunctioned
- DTC C0550: Internal Write Malfunction
- DTC U1800: Loss Of COMMUNICATON Between ECM And FICM Or TCM
- DTC U2104: Loss Of COMMUNICATON Between ECM And FICM Or TCM
- DTC U2106: Loss Of COMMUNICATON Between ECM And FICM Or TCM
- Symptoms-Body Control System
- Power Mode Mismatch
- Control Module References
- Repair Instructions
- Description and Operation
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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.