Sending Units & Sensors
SENDING UNITS & SENSORS LOCATION
| Component | Location |
|---|---|
| Accelerator Pedal Position (APP) Sensor | Above accelerator pedal, on bracket. See Figure. |
| A/C Refrigerant Pressure Sensor (4.2L) | Left front of engine. See Figure. |
| A/C Refrigerant Pressure Sensor (5.3L) | Upper right front of engine. See Figure. |
| Air Conditioning Refrigerant Pressure Sensor (4.2L) | On high pressure line, near A/C compressor. See Figure. |
| Air Suspension Sensor-LR | On frame rail, near left rear suspension arm. See Figure. |
| Air Suspension Sensor-RR | On frame rail, near right rear suspension arm. See Figure. |
| Air Temperature Sensor Assembly - Inside | On left "B" pillar. See Figure. |
| Air Temperature Sensor - Lower Left | Behind center of dash. See Figure. |
| Air Temperature Sensor - Lower Right | Behind right side of dash. See Figure. |
| Air Temperature Sensor - Upper Left | Behind center of dash. See Figure. |
| Air Temperature Sensor - Upper Right | Behind center of dash. See Figure. |
| Ambient Air Temperature Sensor | On left center of radiator support. See Figure. |
| Ambient Light/Sun Load Sensor | On top center of dash, near base of windshield. See Figure. |
| Brake Booster Vacuum Sensor | On power brake booster. See Figure. |
| Camshaft Position (CMP) Sensor (4.2L) | On right front of cylinder head. See Figure. |
| Camshaft Position (CMP) Sensor (5.3L) | At bottom front of engine. See Figure. |
| Crankshaft Position (CKP) Sensor (4.2L) | On left rear of engine block, below starter. See Figure. |
| Crankshaft Position (CKP) Sensor (5.3L) | At right rear of engine, adjacent to starter. See Figure. |
| Electronic Frontal Sensor (EFS) - Left | On left side of frame, at front of vehicle. See Figure. |
| Electronic Frontal Sensor (EFS) - Right | On right side of frame, at front of vehicle. See Figure. |
| Engine Coolant Temperature (ECT) Sensor | Upper left side of engine. See Figure. |
| Engine Oil Pressure (EOP) Sensor Connector (4.2L) | Lower right front of block. See Figure. |
| Engine Oil Pressure (EOP) Sensor (5.3L) | At rear of engine. See Figure. |
| Fuel Pump & Sender Assembly | Inside fuel tank. See Figure. |
| Fuel Tank Pressure (FTP) Sensor | At top left rear of fuel tank. See Figure. |
| Heated Oxygen Sensor Bank 1 Sensor 1 | In left bank exhaust pipe, ahead of catalytic converter. See Figure. |
| Heated Oxygen Sensor Bank 1 Sensor 2 | In left bank of exhaust pipe, behind catalytic converter. See Figure. |
| Heated Oxygen Sensor Bank 2 Sensor 1 | In right bank OF exhaust pipe, ahead of catalytic converter. See Figure. |
| Heated Oxygen Sensor Bank 2 Sensor 2 | In right bank of exhaust pipe, behind catalytic converter. See Figure. |
| Heated Oxygen Sensor (HO2S) 1 (4.2L) | On exhaust manifold, on right side of engine. See Figure. |
| Heated Oxygen Sensor (HO2S) 2 (4.2L) | Downstream of catalytic converter, on exhaust pipe. See Figure. |
| Inflatable Restraint Front Passenger Presence System (PPS) Sensor | Under front passenger's seat. See Figure. |
| Inflatable Restraint Seat Position Sensor (SPS) - Left | On seat track. See Figure. |
| Inflatable Restraint Seat Position Sensor (SPS) - Right | On seat track. See Figure. |
| Inflatable Restraint Side Impact Sensor (SIS)-Left | Under left front door trim, near lower rear of door frame. See Figure. |
| Inflatable Restraint Side Impact Sensor (SIS)-Right | Under right front door trim, near lower rear of door frame. See Figure. |
| Inside Air Temperature Sensor | Top of left "B" pillar. See Figure. |
| Intake Air Temperature (IAT) Sensor | In air intake duct, on top right of engine. See Figure. |
| Knock Sensor (KS) 1 | On lower left front of engine block. See Figure. |
| Knock Sensor (KS) 1 - Left | On top rear of engine. See Figure. |
| Knock Sensor (KS) 2 | On lower left rear of engine block. See Figure. |
| Knock Sensor (KS) 2 - Right | Right side of engine block. See Figure. |
| Lumbar Horizontal Position Sensor - Driver | In driver's seat back. See Figure. |
| Manifold Absolute Pressure (MAP) Sensor (4.2L) | On upper left side of engine. See Figure. |
| Manifold Absolute Pressure (MAP) Sensor (5.3L) | On top of engine. See Figure. |
| Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor (4.2L) | Right front of engine. See Figure. |
| Mass Air Flow (MAF)/Intake Air Temperature (IAT) Sensor (5.3L) | In air intake duct. See Figure. |
| Propshaft Speed Sensor (VSS)-LF | On left front of transfer case. See Figure. |
| Propshaft Speed Sensor (VSS)-RR | On right rear of transfer case. See Figure. |
| Rollover Sensor | Near body control module. See Figure. |
| Seat Position Sensor - Front | Under driver's seat. See Figure. |
| Seat Position Sensor - Horizontal | Under driver's seat. See Figure. |
| Seat Position Sensor - Rear | Under driver's seat. See Figure. |
| Seat Position Sensor - Recline (Driver's) | Under driver's seat. See Figure. |
| VSS Sensor | On left rear of transfer case. See Figure. |
| Wheel Speed Sensor-LF | On left front spindle/hub assembly. See Figure. |
| Wheel Speed Sensor-RF | On right front spindle/hub assembly. See Figure. |
| Yaw Rate And Lateral Acceleration Sensor | Under front passenger seat. See Figure. |