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.
2002 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Connectors
CONNECTORS LOCATION
| Component | Location |
|---|---|
| C101 (Gray, 20 Pin) | On left rear of engine compartment, near strut tower. See Figure. |
| C102 (Black, 16 Pin) | On right rear of engine compartment, near generator. See Figure. |
| C106 (Black, 30 Pin) | On right center of engine compartment. |
| C110 (Black, 8 Pin) | On left top of engine, above fuel injector No. 3. See Figure. |
| C112 (Black, 24 Pin) | On right front of engine compartment. |
| C113 (20 Pin) | On left top of transaxle housing. See Figure. |
| C122 (Natural, 5 Pin) | On left side of right frame rail, near battery. |
| C125 (Black, 1 Pin) | On left rear corner of power steering pump. |
| C126 (Gray, 2 Pin) | Top center of engine, near fuel injector No. 5. |
| C201 (Black, 40 Pin) | Behind dash, on right side of steering column. |
| C205 (1 Pin) | Below left side of dash. |
| C209 (Black, 1 Pin) | Near blower motor. |
| C216 (Yellow, 4 Pin) | Forward of dash inflator module. |
| C217 (Yellow, 4 Pin) | Behind left side of dash, near left dash junction block. |
| C218 (Yellow, 4 Pin) | Behind right side of dash, near right dash junction block. |
| C240 (Black, 8 Pin) | Behind center of dash, left of radio. |
| C255 (Black, 2 Pin) | Behind dash, near blower motor. |
| C297 (Gray, 6 Pin) | Near blower motor. |
| C299A (Blue, 8 Pin) | Near blower motor. |
| C299B (Blue, 8 Pin) | Near blower motor. |
| C301 (Black, 40 Pin) | On left "A" pillar. |
| C302 (Black, 40 Pin) | On right "A" pillar. |
| C306 (Black, 3 Pin) | Taped to I/P wiring harness, near C302. |
| C308 (Black, 2 Pin) | Taped to I/P wiring harness, near C302. |
| C311 (Black, 8 Pin) | Below driver's seat. |
| C312 (Black, 8 Pin) | Below passenger's front seat. |
| C315 (Black, 8 Pin) | In center console, behind transaxle position selector. |
| C317 (Black, 2 Pin) | Center of passenger's compartment, behind transaxle position selector. |
| C355 (Natural, 7 Pin) | On left "B" pillar. |
| C356 (Natural, 7 Pin) | On right "B" pillar. |
| C373 (Black, 16 Pin) | On right "C" pillar. |
| C392 (Black, 8 Pin) | On left "C" pillar. |
| C393 | On left "C" pillar. |
| C395 | Under left side of package shelf trim. |
| C400 (Black, 8 Pin) | In rear compartment, above right rear wheelhouse. See Figure. |
| C405 (Gray, 12 Pin) | In rear compartment, right of spare tire well. |
| C409 (Black, 2 Pin) | In rear compartment, above right rear wheelhouse. |
| C420 (Black, 9 Pin) | In rear compartment, on occupant sensor. |
| C430 (Gray, 6 Pin) | In rear compartment, above right rear wheelhouse. See Figure. |
| C435 (Black, 8 Pin) | On right "C" pillar. |
| C440 (Black, 8 Pin) | In rear compartment, above right rear wheelhouse. |
| C901 (Black, 4 Pin) | Near center high mounted stoplamp. |
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.