P0748 Chevrolet -

Question

I have a DTC code PO748. I have replaced all three shift solenoids and both EPS solenoids. It still triggers the code PO748 and I still get a hard shift in reverse or 1st. The fluid levels are good and clean, 2nd gear and up shift smooth. When running live data the pressures and volts/ohms are in specs. At times I may have to drive for ten minutes or more for this to occur others it happens immediately. any suggestions?

Answer 1

Hi there,

This code indicates an issue with the pressure control solenoid. Here is some info for you. 

P0748 CHEVROLET - Pressure Control Solenoid Circuit Electrical

Read more: https://www.autocodes.com/p0748_chevrolet.html