Don't quote me on this and I'm not entirely sure what it means but here is my understanding of "48RE": 4= 4-speed (3 speedwith O/D), 8= Convertor capacity (???), R= Rear Wheel Drive, and E=Electronic controlled. I got this information from my 1995 Dodge Ram service manual. My '95 had the 5. 9L (360) gas engine with the 46RH. Meaning "4" speed, "6" convertor capacity, "R"ear wheel drive, "H"ydraulically controlled. I don't understand the "convertor capacity". That 46RH by the way cost me a lot of grief by fellow Dodge owners. The 46RH was notororius for being weak. I put 96,000 miles on my 1995 pulling a car hauler weighing about 5,000 pounds on a regular basis without fail! Tribute that to good, consistant maintenance as that fluid and filter never saw life past 25,000 miles. I treat my 48RE the same way but it has a nasty habit of shifting into O/D and then back out under light to moderate acceleration and when the truck is climbing a slight grade. And only when empty. Of course my dealership tells that is normal and that I need to lean into the truck a little more heavily to smooth the shifts out. Whatever. My fix has been to turn off the O/D until I am ready to cruise. I know that may seem dumb but it as calmed my frazzled nerves and returned my love of this truck. Just my . 02 cents.
Attention: TDR Forum Junkies 
