Circuit/System Verification

2010 GMC Savana G2500, Van Cargo Extended, 6.6 6SECTION Circuit/System Verification
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Engine running for at least 1 minute.
  2. Ignition OFF for 30 seconds.
  3. Ignition ON, verify that DTC P0602 is not set.
    • If the DTC is set, program the transmission control module (TCM). If the DTC resets, replace the control solenoid (w/body and TCM) valve assembly.
  4. Observe the DTC information with a scan tool. DTCs P0601, P0603, P0604, and P062F should not set.
    • If a DTC sets, replace the control solenoid (w/body and TCM) valve assembly.
  5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.