I am new to the forum.

I am having transmission issues.

The truck has 41,615 miles never towed anything heavy ( I tow two jet skis ).

Automatic transmission 6.7 Cummins. Getting on the highway the other night it shifted 1st 2nd 3rd then no more shifts and seemed to be in neutral. The shift lever remained in drive and the engine just reved up.

My friend pulled the codes because that caused the engine light to go on.

The code is 734 and 735. I am 2 months out of warranty which is BS....

If anyone could kindly give me a direction to go with this I would appreciate it.

Thanks Tom