[someotherguy]

Bad transmission...and didn't indicate which engine it's gas so 7.4 orig but you never know.  Frame sure looks bent   Nick (MrBeast) and I had looked into which models got the frame stiffeners and which didn't; I'm honestly surprised this 1994 model doesn't seem to have them considering it's a long wheelbase model.  My 1994 135.5" did not, my 1993 159.5" did not either.  My 1995 159.5" did.  Nick's 1994 had them but although it was a 135.5" it had been chopped down from a 183.5" if I recall; we ran the VIN on it to find that out since all his rear spring hardware and crossmembers were bolted in, not riveted.

https://sanantonio.craigslist.org/cto/d/gmc-3500-utility-truck/6546257774.html

Richard

[ED-NY]

I see that posture up north when the rear cab mounts rot out, the chassis perch is normally OK but the body mount collapses.

[someotherguy]

Could be!  Or the cab mount bushings might just be shot.  However if it doesn't have the frame stiffeners it just may be bent.  My 1993 was and it had lived its life with a utility bed, welding rig, etc. and was a maintenance truck for a garbage hauling company.  She was hurt!

Richard

[ED-NY]

Without those frame braces on that long chassis I could see it bending.  Another thing to remember just because it's in Texas doesn't mean it's a Texan....could be a patched up transplanted NY rust bucket .