Crankshaft Position Sensor
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The Hall Effect Crankshaft Position (CKP) sensor signal indicates the crankshaft speed and position. CKP sensor is located behind the crankshaft pulley. See Fig 1 . There are 57 teeth on the front of the crankshaft sprocket, plus a sync gap. The CKP sensor will output an ON-OFF pulse as each window passes the sensing element. The CKP sensor is connected directly to the ECM by the 12-volt reference circuit, low reference circuit and CKP sensor signal circuit. If ECM detects that the CKP sensor signal is incorrect for less than 8 seconds, a DTC will set. To diagnose, see SELF-DIAGNOSTICS - 6.6L SIERRA & SILVERADO - DIESEL article.