gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Diagram Information and Instructions|Page 5658 > < Diagram Information and Instructions|Page 5656
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Camshaft Position Sensor: Description and Operation

The CMP sensor is located in the distributor base. The distributor is driven by the camshaft and distributes the secondary voltage to the spark plugs
through the distributor rotor, cap, and wires. The CMP sensor produces a signal once every revolution of the camshaft. The CMP signal identifies the
position of the #1 cylinder relative to the crankshaft.

Diagram Information and Instructions|Page 5658 > < Diagram Information and Instructions|Page 5656