Sending Units & Sensors

WARNING: This page is about a different car, the 2002 GMC Safari and 2002 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.

SENDING UNITS & SENSORS LOCATION

Component	Location
Ambient Air Temperature Sensor (DIC)	Center of core support, in front of radiator.
Ambient Light Sensor	On top center of dash.
Camshaft Position (CMP) Sensor	On side of distributor. See Figure .
Crankshaft Position (CKP) Sensor	Behind, & to right of engine crankshaft pulley. See Figure .
Engine Coolant Temperature (ECT) Sensor	On left side of left cylinder head. See Figure .
Engine Oil Pressure (EOP) Sensor	On top rear of engine. See Figure .
Fuel Pump & Sender Assembly	In fuel tank.
Fuel Tank Pressure (FTP) Sensor	Inside fuel tank.
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1	On left front exhaust Y-pipe.
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2	On exhaust pipe, between catalytic converter & muffler.
Heated Oxygen Sensor (HO2S) Bank 2 Sensor 1	On right front exhaust Y-pipe, closest to exhaust manifold.
Inflatable Restraint Front End Discriminating Sensor	On front frame crossmember.
Intake Air Temperature Sensor	Top of air intake duct. See Figure .
Knock Sensor	At left rear of distributor, on engine block. See Figure .
Manifold Absolute Pressure (MAP) Sensor	Top of engine, near ignition coil. See Figure .
Mass Airflow (MAF) Sensor	Front of air intake duct. See Figure .
Passlock Sensor	In steering column, near lock cylinder.
Propshaft Speed Sensor (Front)	Near center of transfer case. See Figure .
Propshaft Speed Sensor (Rear)	Near center of transfer case. See Figure .
Throttle Position (TP) Sensor	On left side of throttle body. See Figure .
Vehicle Speed Sensor (VSS) (2WD)	On rear of transmission. See Figure .
Vehicle Speed Sensor (VSS) (4WD)	On rear of transmission. See Figure .
Wheel Speed Sensor (2)	On respective wheel hub/knuckle.