What is the rear axel ratio on a 1988 cadillac brougham with a 307 olds motor

The fuse panel diagram is in the owners manual. If no manual is available, type into your browser your "vehicle year and make" and "fuse box diagram" it will direct you to a page of different diagrams. Find the one that meets your needs.

Probably the fan motor bearings.

It's not a direct bolt in. (sorry) Olds mounts and housing aren't even close. Just about any olds motor (you can find them at any salvage/engine rebuilder pretty reasonable) will bolt in. It would take alot of work to work the chev into Caddy.

You failed to adjust TPS Sensor

This is it.

you need to look under the rear of the car and look for air lines to the shocks, or simply call the GM dealer and give them your serial number and they will tell you what was on the build sheet.

IF THIS IS A REAR WHEEL DRIVE WITH 350 ENGINE YOU WILL HAVE TO USE A SCANNER

10mm socket wrench will be needed. Remove the inner door trim to gain access to the mirrors mounting nuts

This is a start.....

check your timing or your firing order an the distributor