Sending Units & Sensors
SENDING UNITS & SENSORS LOCATION
| Component | Location |
|---|---|
| Air Temperature Sensor Assembly (Inside) (W/Auto A/C) | In roof area, over driver's side door. |
| Ambient Air Temperature Sensor | Front center of vehicle, behind fascia. |
| Ambient Light Sensor | On top left side of dash. |
| Automatic Transmission Fluid Temperature Sensor | Integral to transmission fluid pressure manual valve position switch. |
| Camshaft Position (CMP) Sensor (4.3L VIN X) | Rear of distributor. See Figure. |
| Compass Sensor (W/Long Console) | Integral to driver information center. |
| Compass Sensor (W/Short Console) | In headliner, right of overhead console. |
| Crankshaft Position (CKP) Sensor (4.3L VIN X) | On front of engine, near crankshaft pulley. See Figure. |
| Engine Coolant Temperature (ECT) Sensor (4.3L VIN X) | In left cylinder head, between two rear spark plugs. See Figure. |
| Engine Oil Pressure (EOP) Sensor (4.3L VIN X) | On top rear of engine, near distributor. See Figure. |
| Fuel Pump & Sender Assembly | Mounted in top of fuel tank. See Figure. |
| Fuel Tank Pressure (FTP) Sensor | On top of fuel tank. |
| Fuel Tank Pressure (FTP) Sensor Connector | At top of fuel tank. See Figure. |
| Headlamp Ambient Light Sensor | On top left side of dash. |
| Heated Oxygen Sensor (Bank 1 Sensor 2) (4.3L VIN X) | In exhaust system, after catalytic converter. |
| Heated Oxygen Sensor (Bank 2 Sensor 1) (4.3L VIN X) | In right exhaust pipe, in front of catalytic converter. See Figure. |
| Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 (4.3L VIN X) | In left exhaust pipe, in front of catalytic converter. See Figure. |
| Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2 (4.3L) | In exhaust system, after catalytic converter. See Figure. |
| Inflatable Restraint Front End Discriminating Sensor (Left) | On left side of front frame crossmember. See Figure. |
| Inflatable Restraint Front End Discriminating Sensor (Right) | On right side of front frame crossmember. See Figure. |
| Intake Air Temperature (IAT) Sensor (4.3L) | Left front of engine compartment, in fresh air intake duct. See Figure. |
| Knock Sensor (KS) (4.3L VIN X) | On top rear of engine. See Figure. |
| Manifold Absolute Pressure (MAF) Sensor (4.3L VIN X) | On top center of engine. See Figure. |
| Mass Airflow Sensor (MAF) (4.3L VIN X) | On air intake assembly. See Figure. |
| Passlock Sensor | At ignition switch. |
| Passlock Sensor Connector | In steering column assembly. See Figure. |
| Propshaft Speed Sensor (Front) | Top left rear of transfer case. See Figure. |
| Propshaft Speed Sensor (Rear) | Top right rear of transfer case, near rear propshaft. See Figure. |
| Throttle Position (TP) Sensor (4.3L VIN X) | On throttle body assembly. See Figure. |
| Vehicle Speed Sensor (NP8 Transfer Case) | On side of transfer case. See Figure. |
| Vehicle Speed Sensor (VSS) (4.3L) (2WD)(Manual Transmission) | Left side of rear tail-shaft housing. See Figure. |
| Vehicle Speed Sensor (4.3L VIN X) (A/T) | On right rear of automatic transmission or transfer case. |
| Vehicle Speed Sensor (4.3L VIN X) (M/T) | On left rear of manual transmission. |
| Vehicle Speed Sensor (4.3L) (4WD) ( Manual Transmission) | Left side of transfer case. See Figure. |
| VSS Sensor | Rear of transfer case. See Figure. |
| Wheel Speed Sensor (WSS)-LF | On left front steering knuckle assembly. See Figure. |
| Wheel Speed Sensor (WSS)-RF | At right front knuckle spindle assembly. See Figure. |