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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1583 (Cruise Control System) >> Diagnostic Information and Procedures >> DTC P0568 (4.2L): Cruise Control Set Switch Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The cruise control Set/Coast switch is an input to the powertrain control module (PCM). The PCM uses the cruise control set/coast switch signal circuit in order to detect when the driver has requested to set the vehicle speed or to decelerate the vehicle speed. The PCM detects a voltage signal on the cruise control set/coast switch signal circuit when the switch is applied. This DTC sets if the PCM senses voltage on the cruise control set/coast switch signal circuit for longer than 90 seconds.