How do I replace the brake light switch on my 2001 Cadillac Catera?

SOURCE: Replace tail lights

Usually all you have to do is pull back the inside trunk liner behind the tail lights from inside the trunk, or there may be a plastic door that you open to access the tail lights. The wires going to the tail lights connect to a plug that you turn counter clockwise and pull out from the back of the tail light assembly. Once you have removed the connector replace the bulb. Some light bulbs just pull straight out of the connector, others you may have to push in and turn counter clockwise to remove.

SOURCE: 1999 cadillac catera oil in my water system

Red oil, radiator trans cooler has failed....Brown oil, iether intake or head gasket has failed...do not drive car...have it towed to a shop .

SOURCE: 2001 cadillac catera ebtcm removal how to

You need to remove the upper rad hose and the battery.
Then, use a torx to remove the 6 screws (hard to get at) which will remove the EBTCM from the brake modulator. You also must disconnect the two electrical connectors (the big one has a slide tab).
There are places you can send the module to and rebuild with warranty. I took a module from a 99' and installed it in my wife's 01'. Now the speedo, odometer, cruise and power steering work perfect and no TCM / ABS light.

SOURCE: 2001 cadillac catera v 6 engine

Crankshaft Position Sensor is a common failure item on Cateras, but is not an expensive repair, for these symptoms.

SOURCE: how do I check the transmission fluid in my 2001

There is no dipstick on the 01 Catera or any Catera for that matter (97 to 01) also same transmission used on 3 series BMWs.

I have 2 - 2001 Cateras....no....dip...stick.

It's a sealed transmission. There are fluid drain plugs, one at side of the tranny and one at the bottom. Jack the car up from the front on a level surface. Place a hose to a funnel and remove the top filler access plug (the side one). Insert the hose here and fill the funnel until fluid leaks out the side hole (make sure you have a catch pan). Then drop the car and let the excess fluid level out from the fill hole. Raise the car again and wipe away the excess fluid and re-install the filler plug.