Gas Tank 97 GMC Sierra ?

[old rusty]

I'm 99% sure my 97 Sierra 2500 Ext cab short bed 4x4 has a 25 gallon gas tank but I would sure like to decipher the data tag on the glove box just because I don't want to guess by my measurements with the tank still in the truck out in the cold rain being 44" x 14" ish with the plastic shield being on. Which one of the two dozen codes is the gas tank size ? Or would an extended cab short bed even have the larger tank? Thanks in advance.

 

[someotherguy]

Short bed gets the small tank regardless of cab style regular/extended. Longbed gets the large tank.

Richard