Well I finally got my truck back yesterday, it was fine driving highway speeds now today going about 55 60 it won't go into OD so my RPMS are a bit above 2,000
starting to wish I didn't buy this truck..... Any input guys?

 

3 to 4th o/d shift solenoid. its on the v.b

 

any idea how much that costs to get done?

 

what year is your truck? im pretty sure you have to go though the dealer to get it. i found one on ebay, but its probably a piece of crap from china.

46re 47re a518 a618 overdrive solenoid 96-99 cummins | eBay

 

A518, 618, 46RE, 47RE, 48RE Governor Pressure Solenoid

Upgraded dodge part.

 

I'm going to be giving the diesel guy a call today probably and see what he thinks. Just got my truck back from him friday, ran great and then yesterday it started doing this.