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.
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HOMESERVICE MANUALSCHEVROLET1987FORWARD CONTROL 4.8 T, AUTOMATIC, 400/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSELECTRICAL COMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORSWITCHES
1987 Chevrolet Forward Control 4.8 T, Automatic, 400/M40
Electrical Component Locator: Switches
1987 Chevrolet Forward Control 4.8 T, Automatic, 400/M40SECTION Switches
SWITCHES LOCATION
| Component | Location |
|---|---|
| A/C Pressure Cycling Switch | On rear of accumulator. See Figure. |
| AIR Valve Switch | At rear of right valve cover. See Figure. |
| Brake/Stop Light Switch | On brake pedal bracket. |
| Clutch Switch (Cruise) | On clutch pedal bracket. |
| Glow Plug Inhibit Switch | In upper rear of right cylinder head. |
| Idle Air Switch | On right side of throttle body. See Figure. |
| Throttle Position Switch (6.2L) | On fuel injection pump. |
| TCC Governor Pressure Switch | In transmission. |
| Transmission Kickdown Switch | At top of accelerator pedal bracket. |
RENDER: 1.0x
NO RELATED
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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.