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.
2005 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE
Circuit Protection Devices
CIRCUIT PROTECTION DEVICES LOCATION
| Component | Location |
|---|---|
| A/C Compressor Clutch Diode (3.4L VIN E) | Lower left side of engine, at A/C compressor. See Figure. |
| A/C Compressor Clutch Diode (3.8L VIN K & VIN 1) | Lower left side of engine, at A/C compressor. See Figure. |
| Circuit Breaker #1, #2, #3 | Lower center of dash. See Figure. |
| Engine Wiring Harness Junction Block | In right side of engine compartment, forward of strut tower. |
| Fuse Block (SEO) | Behind dash, right of steering column. See Figure. |
| Fusible Links (Underhood Junction Block) | At underhood accessory wiring junction block. See Figure. |
| Instrument Panel Electrical Center (Left) | End of dash, in left door opening. |
| Instrument Panel Electrical Center (Right) | End of dash, in right door opening. |
| I/P Junction Block (Left) | Left side of dash, behind access panel. See Figure. |
| I/P Junction Block (Right) | Right side of dash, behind access panel. See Figure. |
| Power Seats Circuit Breaker | On bottom side of right instrument panel fuse block. |
| Rear Defogger Circuit Breaker | On bottom side of right instrument panel fuse block. |
| Rear Junction Block | Behind right rear wheelwell. |
| Retained Accessory Power Breaker | On bottom side of left instrument panel fuse block. |
| Underhood Electrical Center | On front of right strut tower. |
| Underhood Junction Block (Top & Bottom) | On front of right strut tower. See Figure. |
Factory Service Tools
Use the Manual With the Right Hardware
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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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