Question about 1994 Cadillac DeVille
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Posted on Jan 02, 2017
red black and gray are just half the connections. Red is positive 12 volts coming from fuse of circuit breaker. The black wire is either the ground or the main hot wire going to the blower motor (3 pin connection only), and the gray wire (if is is small in size) is a variable voltage coming from the body control module requesting speed for the blower motor.The blower control module varies voltage on the main wire going to the blower motor, supposedly in accordance with the requested voltage from the body control module. Usually if all fuses are okay and present on the apprpriate wire of the blower control module, the a blower motor that will not run or stays running after the key is turned off is the fault of the blower control module. If the blower control module has failed the the cause must be determined (over amping blower motor) or else new blower control module may fail when powered up.Usually blower control modules have more than three wires. Usual connections are: B+ (battery voltage) GND (chassis or engine ground), two large wires going directly to blower motor (can be any color, but are usually 10 guage in size), and an optional wire that reports voltage level back to the body control module.
Posted on May 29, 2009
The blower motor is located under the glove box. It is a very difficult procedure to replace. The blower motor has six 7/32 size screws, two of which are hidden and one, the closest to the firewall, will require a 1/4" drive, and swivel. I removed the glove box in order to put the replacement blower motor in. It takes a little extra time but allows more room and saves your back. Get a diagram off the internet of how to remove these things. Plug in the new blower motor and test it before you just install it! My biggest fear installing the new blower motor was that it took a lot of force to get it back in on an angle. Almost thought that I was going to crack or damage the fins on the cage. It takes force but just be careful.
Posted on Jan 10, 2011
SOURCE: how to reset oil life
To reset the engine oil life, do this: push info button till oil life comes up, then push inforeset, to reset to 100%
To reset the transaxle oil life do this: early models; press off and rear defrog button simultaneously.
later models; press info till the oil message shows up then, press and hold info reset.
Some models have both, but my 94 Deville only monitors the transaxle
Posted on Oct 07, 2008
replace the relay , when a relay sticks like that , a good test is to slap it with something like the handle of a screw driver , see if it un-sticks , its not a fix , just a test . cheers'
Posted on Jan 13, 2009
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.
Posted on Feb 08, 2009
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