Diagnostic Aids

WARNING: This page is about a different car, the 2007 GMC Yukon XL and 2007 Chevrolet Suburban. 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 a concern with an engine over-rev condition or neutral condition in 4th gear.
DTC P0756 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.