Circuit/System Verification

WARNING: This page is about a different car, the 2013 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.

Verify that no other hybrid powertrain or transmission control module DTC is set.
- If any hybrid powertrain or transmission control module DTC is set
  Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
Perform the Transmission Fluid Level and Condition Check to verify correct fluid level and condition.
Ignition ON.
Verify the auxiliary transmission fluid pump turns ON and OFF when commanding the auxiliary transmission fluid pump relay ON and OFF with a scan tool.
- If the pump does not operate
  Refer to Circuit/System Testing .
- If the pump operates
  All OK. Refer to transmission Line Pressure Check (Non Hybrid) , Line Pressure Check (Hybrid) .