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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 350 (Rear Drive Axle) >> Diagnostic Information and Procedures >> DTC C0393: Rear Differential Clutch Solenoid Valve Control Circuit (G99) >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that DTC C0393 with symptom byte 01, 02 or 5A is not set.
    • If the DTC is set 

      Refer to Circuit/System Testing.

    • If the DTC is not set 
  2. Verify that DTC C0393 61 is not set.
    • If the DTC is set. 
    1. Perform the Rear Differential Hydraulic System Bleed Procedure with a scan tool. Refer to Rear Differential Hydraulic System Service Fill/Bleed 
      2. NOTE:

      The Rear Differential Clutch Module can run this procedure up to 3 attempts to get a Pass.

    3. Verify that DTC C0393 61 is not set.
      • if DTC is set, test or replace the appropriate rear differential clutch solenoid valve.
      • If the DTC is not set
    4. All OK.
    • If the DTC is not set 
  3. All OK.
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