GM Service Manual Online
For 1990-2009 cars only

Checks

Cause

Refer to No Overrun Braking - D3 .

Check the PCM for current DTCs.

Automatic Transmission Fluid Pressure Manual Valve Position Switch Assembly

    â€¢ Pinched wire
    â€¢ Loose connector
    â€¢ Loose bolt causing leakage
    â€¢ No signal to the PCM.