zblee

I am getting a code; P0748 and because of this i think the transmission is defaulting to max pressure and resulting in a very harsh shift . 1-2 is the worst.

everything is connected and the everything looks good. anyone have this issue? how did you resolve it?

_zblee

03sierraslt

iTrader: (22)

What year trans and what year PCM?

zblee

Truck and pcm are 03 and trans is unknown year. Has the split cooler lines on the case and the PN switch and plugs are the ones with two plugs . If this helps at all