I t is either a 79 or an 85mm belt
78 inch 6 rib belt.
The serpentine should route the same as with the AC except fro the AC compressor. The belt will go straight past the compressor, so you will need a shorter belt to make the bypass work.
How to by pass a pro lock on cadillac
cant its the computer
You can bypass the a/c compressor on the 1989 cadillac fleetwood by simply using a smaller accessory belt. I have found that a 77 inch belt works perfectly. There is no need for a bypass pulley and you won't find one for this model anyway.
try this: http:/fastfieros.com/tech/gm_vats_passkey.htm
pulley from same car with no air bolts in but u need to remove compressor
I presume you mean the A/C compressor. The easiest way is to buy a serpentine belt for the model of the vehicle you have without A/C fitted, and then use that. This is a known temporary cure for roadside assistance.
Google Pontiac boneville ac compressor bypass pulley. There are a few places that sell a replacement pulley that goes in the spot of the compressor that allows use of the original serpentine belt.
if you can reroute the belt to bypass the ac compressor all you need to work out is how much shorter the belt is that you would require
I had a 1995 buick lesabre and the A/C compressor went out in the winter time. I waited until spring to replace the compressor. In the mean time, I used a Dayco 72.10 inch belt and bypassed the A/C compressor and it runs fine.
Use a belt that is about 12 inches shorter. pete duralast (auto zone) 775k6 fits just fine. just bypass the A/C with the belt. Rog