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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 896 (Engine Controls And Fuel - 4.3L - Introduction (2 Of 2)) >> Description & Operation >> Electronic Ignition (EI) System Description >> Crankshaft Reluctor Wheel

Crankshaft Reluctor Wheel

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The crankshaft reluctor wheel is part of the crankshaft. The reluctor wheel contains a pattern around the circumference of the wheel consisting of 58 teeth and a reference gap. Each tooth on the reluctor wheel is spaced at 60 tooth spacing, or 6 degrees apart from each other with 2 missing teeth for the reference gap. The engine control module (ECM) uses the teeth and reference gap to determine the crankshaft position (CKP) and speed.

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