I was looking around and i saw somewheres that the 91 caddys use the same tranny as the bonnies of the same years, but i cant find any info. Can anyone shine a light here ?

This isn't N* related.

well It is nothstar related sorta;...mafia the tranny database I'm looking at goes 95-05 and it says the 95 up /4.9 liter Caddy uses the 4T60E, same as non */C Bonnies, the */C bonnie uses the 4T65E, and the GXP uses the 4T80E tranny (so maybe same in earlier years?) If YOU find your tranny # then maybe it'* the same as one of our three. John ................ (Harofreak handed me a note and i stuck in my hat...(google is my best friend) and he'* right..........

i'll crouch under my car tomorrow (too tired today, first time pulling sc from bonnie)

Had a 92 Cadillac Sedan Deville in White with Red leather, lace wheels and I think those were the only options great car. Had boat loads of torque. That Deville has a 300ci. V8 which was the last V8 made before ever Cadillac car got the Northstar V8, your car has a 4T60 automatic. No parts you share with Bonneville'* as far as the engine is concered some transmission stuff, no engine stuff. The Caddy is a C-Body the Bonneville is a G/H-Body G is the eailer generation. They do have something in common but not the motor lol. I remember pushing mine to well over 90mph (I don't know cause the speedo only hit 85) then I traded in for my SLE. Good luck with her! I was sad that day because it was dads car only had a few problems but it was impractical for me and 91 gas isn't cheap, plus I do not have Caddy money nor am I old yet lol. My son and I will forever miss that car but forever love the Bonneville! Funny how that goes isn't it?

hey gm know if the 4t60 interchangable with 4t60e?trying to build a file here

Don't think so from the time I talked to an old mechinc buddy of mine 4T60 is a hence hydra-matic hydrallically controlled (sp) and the 4T60E is electroincally controled hence the E.

gotcha and thanks

Yup its possible well maybe, but I have no details, but the way the shifts are controlled is the big thing. OLD way vs. NEW way lol. Simply put.

But, since im planning on NOT selling the caddy, i figured that the bonnie is a little more expensive since its newer, but is it worth rebuilding the caddy tranny, in comparison to say another year of caddy ? and yes, torque on the cadillac makes bitches of imports. (even with a slippin 1st gear)