Cruise control does not work.the servo unit seems fine

Marvin

• 85242 Answers
• Posted on Oct 14, 2008

SOURCE: 1994 cadillac deville concours

Look if the engine is doing what you say then it is overheating and there is no problem with the sensor, remember the sensor only tells what is going on, it does not cause anything like overheating. Have you bled the system of air, there is a factory procedure to do this.

SOURCE: Can not find the body control module on my 1989 cadillac sedan deville -- anyone know where it is?

you need to take glove box out. It's right behind three three 7mm bolts for the plastic piece that holds it in. two 10 mm nuts that hold it to the plastic piece. Should come right out with a little finessed force.

SOURCE: replacing bulbs

well... it turns out the 04 is different.
check out this link. it may offer some insight. I understand the bulbd may be replaced in the switches, however you have to remove the aigbag to access....
http://www.cadillacforums.com/forums/cadillac-seville-cadillac-eldorado-forum/155255-steering-wheel-lights-out-2000-sls.html

SOURCE: Cooling fan relay on a 1992 Cadillac Deville

Left Hand Side Of Engine Compartment On Relay Bracket

SOURCE: No heat in 91 Cadillac Sedan Deville

I would beleive more that you have build up in the heater core. Try taking loose the heater hoses from the block and use a water hose to spray into one of the hoses letting it come out the other hose then switch hoses with the water hose and keep reverseing for 2/3 times each hose. sounds like stop leak may have been used in a prior time and may be blocking water flow.

Good luck,
Lugnut61