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.
1990 Chevrolet APVFACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Switches
SWITCHES LOCATION
| Component | Location |
|---|---|
| A/C High Pressure Switch | Mounted behind compressor. See Figure . |
| A/C Low Pressure Switch | Mounted behind compressor. See Figure . |
| A/C Refrigerant Pressure Switch | On right side of engine compartment, below accumulator. See Figure . |
| Brake Fluid Level Switch | Integral with brake master cylinder. See Figure . |
| Brake Light/Cruise/TCC Switch | Under dash, on brake pedal bracket. |
| Oil Pressure/Fuel Pump Switch | In front of engine, near oil filter. See Figure . |
| Park/Neutral Switch | On left side of engine compartment, on top of transaxle. |
| Parking Brake Switch | Part of parking brake mechanism. |
| Seat Belt Switch | Part of driver's seat belt latch mechanism. |
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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