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 MANUALSCHEVROLET2002AVALANCHE 2500, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 231 (BODY CONTROL MODULES)
2002 Chevrolet Avalanche 2500, RWD
Section 231 (Body Control Modules)
2002 Chevrolet Avalanche 2500, RWDSECTION Section 231 (Body Control Modules)
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
- Description & Operation
- Component Locations
- Programming
- Trouble Shooting
- INTERMITTENTS
- Self-Diagnostic System
- Body Control System Diagnostic System Check
- Air Bag System Diagnostic System Check
- Air Conditioning System Diagnostic System Check
- Anti-Lock Brake Diagnostic System Check
- Audible Warnings Diagnostic System Check
- Automatic Level Control Diagnostic System Check
- Automatic Transmission Shift Lock Control Diagnostic System Check
- Body Rear End Diagnostic System Check
- Cellular Communication Diagnostic System Check
- Cruise Control System Diagnostic System Check
- Defogger Diagnostic System Check
- Door Systems Diagnostic System Check
- Driver Information Center Diagnostic System Check
- Engine Controls Diagnostic System Check
- Engine Cooling Diagnostic System Check
- Engine Electrical Diagnostic System Check
- Horns Diagnostic System Check
- Hydraulic Brakes Diagnostic System Check
- Instrument Cluster Diagnostic System Check
- Lighting System Diagnostic Check
- Navigation System Diagnostic System Check
- Power Seat Systems Diagnostic System Check
- Power Sun Roof Diagnostic System Check
- Radio/Audio System Diagnostic System Check
- Remote Keyless Entry Diagnostic System Check
- Retained Accessory Power Diagnostic System Check
- Theft Deterrent Diagnostic System Check
- Tire Pressuring Monitoring Diagnostic System Check
- Variable Effort Steering Diagnostic System Check
- Diagnostic Trouble Code Definitions
- Diagnostic Tests
- DTC B1000: Control Module Internal Fault (Except IPM)
- DTC B1001: Instrument Panel Module Not Calibrated To Vehicle
- DTC B1004: Keep Alive Memory
- DTC B1007: EEPROM Write Error
- DTC B1009: EEPROM Checksum Error
- DTC B1010: Instrument Panel Module ROM Checksum Error
- DTC B1025, B1035, B1045 Or B1055: Radio Speaker Output Short To Ground/Voltage
- DTC B1390: Device Voltage Reference Input Circuit Malfunction
- DTC B1422: Dash Integration Module Ignition Input Open Or Short To Ground/Voltage
- DTC C1245: Low Tire Pressure
- DTC U1000 & U1255: Class 2 Communication Malfunction
- DTC U1001-U1254: Loss Of XXX Communications
- DTC U1161-U1163 Or U1170: Driver Door Module Communication Malfunction
- DTC U1300, U1301 & U1305: Class 2 Short To Ground/Voltage Or Loss Of Class 2 Communication
- DTC U1500: ONSTAR® (Generation 2.6) Serial Data Circuit Malfunction
- DTC U1500: ONSTAR® (Generation F1) Vehicle Communication Interface Module Internal Malfunction
- System Tests
- Removal & Installation
- Notes
- Dash Integration Module (Dim)
- Door Module
- Driver Information Center (DIC)
- Electronic Brake Control Module (EBCM)
- Instrument Panel Cluster
- Instrument Panel Integration Module (IPM)
- Memory Seat Module (MSM)
- ONSTAR® Modules (VCU, VIU & VCIM)
- Powertrain Control Module (Pcm)
- Radio
- Rear Integration Module (Rim)
- Remote Cd Changer
- Remote Control Door Lock Receiver (RCDLR)
- Sensing And Diagnostic Module
- Theft Deterrent Control (TDC) Module
- Trunk Trim Panels
- Connector Identification
- Wiring Diagrams
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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.