How do I identify a 48RE from the 47RE, is there a tag etc on the transmission or somewhere on the truck??

Thanks

 

If the truck has the High Output engine (305HP/555TQ), it is a 48re.

If the truck has the Standard Output engine (235HP or 250HP), it could be either. The easiest way to tell on a SO truck is by the build date on the driver's door data tag. If the truck was built in 2002, it is a 47re. If the build date is after March, 2003, it is a 48re.

If the build date is somewhere in-between those ranges, then you need to look in at the tag in the glovebox. If it has the codes DG8 and DGA, it is a 48re. I'm not sure what the exact glovebox codes are for the 47re.

 

I looked up mine (47RE) for you.

In the glove box it shows codes DGB (or DG8?) and DGP for the tranny. My build date is 10/02 on the door.

Hope this helps. They're really not a bad tranny if you treat 'em right.

 

Thanks for the help, I have an old 1995 2500 and it has 125,000 so far, I change the tranny fluid and filter every year...also use the OD button faithfully...

 

If you have a 1995 you have a 47RH.