Diagnostic Aids
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Verify that the transmission meets the specifications in the Shift Speed table. Refer to Shift Speed .
- Other internal transmission failures may cause more than one shift to occur.
- The customer may have concern of an engine over-rev condition or neutral condition in 4th gear.
- DTC P0757 defaults to an elevated line pressure condition which may result in partial TCC apply. This may produce an idle surge that could stall the engine.