1998 Dodge Ram pick up 2500 5.9 Engine 400,000 +miles has a 1 ton running gear. I have bought transmission parts for a 1997 just to get the same part to match up. I've owned this truck for a little over 6 years. It has been great with only a few minor problems. Please no negative remarks as I have sentimental value to this truck. I'm a female and cash is tight right now but I need some help figuring out what's going on with the shifting in my truck. I have checked everything I can think of and even replaced the transmission governor pressure solenoid/sensor. About 3 weeks ago the transmission would take 1st then 2nd and no higher. I got advice and replaced the GPS⬆ and got everything back together and drove it about a mile down the road. It shifted like a dream. I went home picked up my tools and took off to the store about 3 miles from me. I got almost there and my transmission slipped a bit-not bad. I cut it off while I got gas and headed back home. I didn't get but about a 1/2 mile gone and I wasn't going but like 15-20 mph because of a stop sign and my rpms shot up and my truck wouldn't move even manually shifting on the column I pulled over and checked fluid and for leaks- none. I cut it off then thought try to get home. It would go in drive and ran for a minute tops and rpms shot up again with no movement from my truck. I done this 3 times before giving up and being towed home... Only because I have small children whom need Mommy. I'm disgusted now and down and out. I need my truck and want my truck fixed. Please help anyone! All information is GREATLY appreciated.