Circuit/System Verification

WARNING: This page is about a different car, the 2023 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

Verify the condition does not exist: Incorrect fluid level or condition - Refer to: Transmission Fluid Level and Condition Check
- If a condition exists
  Repair or replace as necessary
- Go to next step: If no condition exists
Ignition - On/Vehicle - In Service Mode
Perform the following action: Clear DTCs
Road test the vehicle. - Refer to: Road Test
Verify DTC P0716, P0717, P0721, P0722, P0723, P07BF, P077C, P077D, P07C0, P176B, P176C, P176D, P17D3, P2731, P2820, P2821 is not set.
- If DTC P0716, P0717, P0721, P0722, P0723, P07BF, P077C, P077D, P07C0, P176B, P176C, P176D, P17D3 is set
  Refer to: Diagnostic Trouble Code (DTC) List - Vehicle
- If any DTC listed in the DTC Descriptor Category is set
  Refer to: Diagnostic Fault Information
- Go to next step: If none of the DTCs listed in the DTC Descriptor Category is set
Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Verify DTC P0716, P0717, P0721, P0722, P0723, P07BF, P077C, P077D, P07C0, P176B, P176C, P176D, P17D3, P2731, P2820, P2821 is not set.
- If DTC P0716, P0717, P0721, P0722, P0723, P07BF, P077C, P077D, P07C0, P176B, P176C, P176D, P17D3 is set
  Refer to: Diagnostic Trouble Code (DTC) List - Vehicle
- If any DTC listed in the DTC Descriptor Category is set
  Refer to: Diagnostic Fault Information
- Go to next step: If none of the DTCs listed in the DTC Descriptor Category is set
All OK.