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 MANUALSGMC1983PICKUP K2500, 6.2 C, SM465/M20REPAIR AND DIAGNOSISELECTRICALCOMPONENT LOCATIONSELECTRICAL COMPONENT LOCATOR - EXCEPT S10 & S15SENDING UNITS/SENSOR SWITCHES
1983 GMC Pickup K2500, 6.2 C, SM465/M20
Sending Units/Sensor Switches
1983 GMC Pickup K2500, 6.2 C, SM465/M20SECTION Sending Units/Sensor Switches
SENDING UNITS/SENSOR SWITCHES LOCATION
| Component | Location |
|---|---|
| A/C Pressure Cycling Switch | On accumulator drier. See Figure. |
| Detonation Sensor | On lower left side of engine block behind starter. See Figure. |
| Fuel Gauge Sender | Top of fuel tank. |
| Oil Pressure Sensor (Diesel) | Upper front of engine. |
| Oil Pressure Sensor (4.1 & 4.8L Gas) | In engine above starter. |
| Oil Pressure Sensor (5.0 & 5.7L Gas) | left front of distributor. |
| Oil Pressure Sensor (7.4L Gas) | Rear left side of engine. |
| Oxygen Sensor (6-Cyl.) | In front exhaust pipe. See Figure & 10. |
| Oxygen Sensor (V8) | In exhaust manifold (V8). See Figure & 10. |
| Vacuum Sensor | Near electronic control module. See Figure & 4. |
| Vehicle Speed Sensor | Under left side of dash. See Figure. |
| Water Temperature Switch (6-Cyl.) | On water outlet. See Figure. |
| Water Temperature Switch (V8) | Left rear corner of engine. See Figure. |
RENDER: 1.0x
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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.