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Home >> Chevrolet >> 2007 >> Uplander Base, 3.9 1 >> Repair and Diagnosis >> Accessories & Equipment >> Cruise Control Systems >> Diagnostic Information and Procedures >> Cruise Control Inoperative/Malfunctioning >> Circuit/System Verification
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Circuit/System Verification

  1. Verify that DTC P0573 is not set in the ECM.
  2. Rotate the steering wheel to both steering stops while activating each cruise control switch separately. With a scan tool, observe all cruise control switch parameters, including the Cruise Cancel Switch, in the ECM. Ensure that each cruise control switch activated and that each displayed switch position parameters do not match as the steering wheel is turned.
    • If the parameters match with each depressed switch accordingly, go to Diagnostic Aids.
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