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)COMPONENT LOCATIONS
2002 Chevrolet Avalanche 2500, RWD
Component Locations
2002 Chevrolet Avalanche 2500, RWDSECTION Component Locations
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.
COMPONENT LOCATIONS
| Component | Location |
|---|---|
| Data Link Connector (DLC) | Below Driver Side Of Instrument Panel, Near Steering Column |
| Driver Door Module | In Driver Door. See Fig 1 |
| Driver Information Center | In Center Of Instrument Panel, Above Radio. See Fig 2 |
| Electronic Brake Control Module (EBCM) | Driver Front Of Engine Compartment, Under Air Cleaner. See Fig 3 |
| Fuse Block (Rear) | Below Driver Side Rear Seat. See Fig 4 |
| Fuse Block (Underhood) | On Passenger Side Of Engine Compartment. See Fig 5 |
| Integration Module (Dash) | Behind Passenger Side Of Instrument Panel, Under Sound Insulator. See Fig 6 |
| Integration Module (Instrument Panel) | Behind Center Of Instrument Panel, Behind Climate Control Panel. See Fig 6 |
| Integration Module (Rear) | Behind Rear Seat Back. See Fig 6 and Fig 7 |
| Memory Seat Module (MSM) | Below Driver Front Seat. See Fig 8 |
| Powertrain Control Module (PCM - 3.5L) | Driver Front Corner Of Engine Compartment, Below Air Cleaner Housing. See Fig 9 |
| Powertrain Control Module (PCM - 4L) | Driver Front Corner Of Engine Compartment, Below Air Cleaner Housing. See Fig 10 |
| Remote Control Door Lock Receiver (RCDLR) | On Underside Of Rear Deck, Near Driver Side Speaker. See Fig 11 |
| Sensing & Diagnostic Module (SDM) | Below Passenger Front Seat. See Fig 12 |
| Theft Deterrent Control (TDC) Module | Driver Side Of Instrument Panel, To Right Of Steering Column. See Fig 2 |
| Vehicle Communication Unit (VCU - 2.6) | Rear Of Passenger Compartment, Behind Rear Seat Back, Mounted To Vehicle Interface Unit. See Fig 13 |
| Vehicle Communication Interface Module (VCIM - F1) | Rear Of Passenger Compartment, Behind Rear Seat Back. See Fig 14 |
| Vehicle Interface Unit (VIU - 2.6) | Rear Of Passenger Compartment, Behind Rear Seat Back, Mounted To Electronics Bay. See Fig 13 |
| C200 | Body Harness To IP Harness, Under Driver Front Corner Of Instrument Panel. See Fig 15 |
| C201 | Body Harness To IP Harness, Under Driver Front Corner Of Instrument Panel. See Fig 6 and Fig 16 |
| C329 | Body Harness To Headliner Harness, Rear Of Passenger Compartment, Behind Passenger Rear Quarter Upper Trim Panel. See Fig 7 |
| Ground (SDM) | Under Driver Side Seat. See Fig 17 |
| G200 | On Driver Side Windshield Pillar. See Fig 15 |
| G201 | On Passenger Side Windshield Pillar. See Fig 16 |
| G302 | Under Driver Side Rear Seat. See Fig 4 |
| S217 | In Body Harness, 9" From Pass-Through Grommet. See Fig 15 |
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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.