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: Miscellaneous
MISCELLANEOUS LOCATION
| Component | Location |
|---|---|
| A/C Compressor Clutch Diode | Taped to wiring harness, next to A/C clutch connector. |
| ALDL Diagnostic Connector | Under left side of dash, left of steering column. See Figure . |
| Blower Motor Resistor | In engine compartment, mounted on A/C-heater module assembly. See Figure . |
| Convenience Center | Under right side of dash. See Figure . |
| Courtesy Light Diode | On top of left "B" pillar, taped to courtesy light harness. |
| Daytime Running Light (DRL) Diode | In engine compartment, above left wheelwell. |
| Fuel Pump Test Connector | In engine wiring harness, behind battery. See Figure . |
| Set Timing Connector | In engine compartment, above right wheelwell. See Figure . |
| Solenoid Box | Behind right side of dash, mounted to A/C-heater box. |
| Vehicle Speed Sensor (VSS) Buffer | Behind right side of dash, above convenience center. 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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