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Circuit/System Verification

WARNING: This page is about a different car, the 2012 GMC Yukon, 2012 Chevrolet Tahoe, and 2012 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine ON, verify the transmission fluid temperature is between 50-80°C (122-176°F).
  2. Operate the vehicle long enough to verify at least a 3°C (5°F) rise in the TCM temperature parameter, then operate the vehicle in Park for 5 seconds.
  3. Engine ON, observe the scan tool Clutch PC 4 Sol. CKT Status parameter. The reading should display OK or Indeterminate.
    • If the reading is not within the specified range, replace the Q8 control solenoid valve assembly.
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