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Home >> Hummer >> 2010 >> H3T Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 74 (Cruise Control System) >> Diagnostic Information and Procedures >> DTC P0564 >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2010 GMC Canyon and 2010 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.

The cruise control switch is an input to the engine control module (ECM). The ECM monitors the cruise control switch signal circuit in order to detect when a cruise control function switch has been activated. The ECM detects a predetermined voltage signal when a cruise control function switch is applied, with each switch having a different voltage value.

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