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.
2004 Chevrolet S10 PickupFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| Automatic Transmission Control Module Connector | On center of front floor pan. See Figure. |
| Body Control Module | Under dash, on heater case. See Figure. |
| Body Control Module Connector | Under dash, on heater case. See Figure. |
| Central Sequential Fuel Injection (4.3L VIN X) | On top center of engine, forward of distributor. |
| Cruise Control Module (CCM) | On left side of firewall. See Figure. |
| Cruise Control Module Connector | Left side of firewall. See Figure. |
| Driver Information Center | In front overhead console. |
| Electronic Brake Control Module (EBCM) | Near left front inner fender, on brake pressure modulator valve. See Figure. |
| Electronic Brake Control Module (EBCM) Connector | Left rear of engine compartment. See Figure. |
| Heated Seat Control Module (Driver/Front Passenger) | Under respective front seat. See Figure. |
| HVAC Control Assembly | In center of dash. |
| Ignition Control Module (4.3L VIN X) | On top right side of engine. See Figure. |
| Inflatable Restraint I/P Module | Right side of dash. See Figure. |
| Inflatable Restraint Module Connector | Right side of dash. See Figure. |
| Inflatable Restraint Sensing & Diagnostic Module (SDM) | Under console & carpet, between front seats. See Figure. |
| Inflatable Restraint Steering Wheel Module | In steering wheel. See Figure. |
| Memory Seat Module (Driver) | Under left front seat. |
| Powertrain Control Module (PCM) | On right side of engine compartment. See Figure. |
| Remote Control Door Lock Receiver (RCDLR) | Behind lower left side of dash. See Figure. |
| Sunroof Control Module | At front of sun roof. See Figure. |
| Transfer Case Shift Control Module | Behind right kick panel. See Figure. |
| Transfer Case Shift Control Module Connector | Behind right front kick panel. See Figure. |
| Turn Signal Lamp/Hazard Flasher Module | Behind right side of dash. See Figure. |
| Window Wiper Motor Controller-Rear | Part of rear window wiper motor. See Figure. |
Factory Service Tools
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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.
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