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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 9 (Automatic Transmission - 5ET50 (MKE)) >> Diagnostic Information and Procedures >> DTC P179C >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2019 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
  1. Vehicle ON.
  2. Verify that DTC P0721, P0796, P0966, P0967, P0969, P0970, P0971, P0973, P0974, P0976, P0977, P215C, P2720, P2721, P2728, P2729, or P2730 is not set.
    • Go to next step: If the DTC is not set 
  3. Perform the Transmission Fluid Level and Condition Check  to verify correct fluid level and condition.
  4. Perform the Line Pressure Check  to verify correct oil pressure.
  5. Operate and monitor the Clutch 1 Slip Speed parameter reading should be less than 200 RPM when the Clutch 1 Status parameter reading is Applied.
    • If clutch slip speed is greater than 200 RPM 

      Refer to Component Testing.

    • Go to next step: If clutch slip speed is less than 200 RPM 
  6. All OK.
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