answersLogoWhite

0


Best Answer

I had my 1991 sedan deville towed the other night, and the tow truck driver told me that the cars climate control is the cars computer also, said you need to push those buttons in a certain sequence, or a couple at the same time, he just didnt know what to push. i checked that with Cadillac and they agreed, they just didnt know how to do it either, go figure. ive also heard disconecting the negative terminal of your battery then reconecting a few seconds after will do the trick. I also read in a manual (i havnt been able to find since) that reseting the computer is done by idleing the car for a certain period of time in park and then in drive while the climate control is set to "off". when/if i find that again i will put it in. a little.

ok found it. If you lose battery power or the battery is disconecte, your cars computer must be programmed. it takes just over 20 minutes to do it.

If you want to do it your self, here's how:

  1. Apply the parking brake
  2. Make sure the front wheels are straight.
  3. Turn off the electronic climate control.
  4. Start the engine in park and let it idle for 15 minutes.
  5. Put your foot on the brake pedal, shift the transaxle to Drive and let it idle for 3 minutes or more. do not accelerate the engine.
  6. With the vehicle in drive, turn the electronic climate control to "auto" and let engine idle for 3 minutes or more.
  7. Turn the engine off.
  8. Now your computer is programmed.

That is from the manual to my 1991 caddy deville. I guess disconnect your battery then follow those steps. Good luck

Actually most Cadillacs use the same method to reset the ECM and the BCM. Assuming that the the problem that caused the check engine light to come on is not a hard fault. With the engine off and the ignition switch (the key) turned to run go to the climate control buttons and press the 'OFF' and 'Warmer' button and the same time until you see the fuel control panel change to all 8s then let go of the climate control buttons. The fuel panel will give a readout of all the failure codes recorded up to the last 50 times. If the cause of a failure code has been resolved turn the ignition switch off then turn it back on to 'run' then while holding the 'Off' button on the control panel press on the 'HI FAN' button on the climate control panel at the same time. Hold the two buttons for about 5 seconds. Turn the ignition switch off for a few seconds and then start the engine again. Allow the enging to reach normal operating temperature or drive it about 4 or 5 miles which will cause the engine to reach normal operating temperature quicker. Observe the check engine light to see if it illumintes again. There are many operational checks that can be made through these control panels both with the engine off and while running. It is best to have the manufacturers shop service manual to do many of these tests properly. Cadillac shop service manuals from the dealer will cost around $100.00. You can often get the manual used through eBay or some other source for half price or less.

User Avatar

Wiki User

βˆ™ 2015-07-16 19:29:21
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: How do you reset a 1990 Cadillac DeVille computer system after self-servicing?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How do you bypass the pass key 2 system in a 1994 Cadillac deville concourse?

cant its the computer


How can you get a vacuum diagram for a 1994 Cadillac DeVille?

where is the vacuum system on a 1994 cadillac deville and how do u vacuum it


Picture for brake line system for 95 Cadillac deville?

I need to see the brake diagram for a 95' cadillac sedan deville


What does service stability system mean on 2000 Cadillac deville?

i have a 2000 cadillac seville and stability system is on.


How do you Reset anti theft system 1997 Cadillac deville?

How to reset the theft system on 1997 Cadillac Seville


How do you reset a 1997 Cadillac DeVille concourse computer system after self-servicing?

unpluge & repluge the negative terminal of yr battery.


How can I fix a 97 Cadillac DeVille Will not start because Theft System Problems?

97 deville theft system problem


Where is the vacuum diagram or the vacuum system in a 1977 Cadillac Coupe deVille?

Linked is the diagram for a 1976 Cadillac DeVille, 1977 should be roughly the same...


Where is the blower motor relay on a 1998 Cadillac deville?

A 1998 Cadillac Deville does not have a blower relay. The system has a fuse and a controller to feed power to the blower motor.


Can you install a 2002 cadillac deville navigation system in a 2001 deville?

yes it can contact me at cadillac1997etc@yahoo.com and i can tell you how!


When you look in the trunk of a 1994 Cadillac deville which fuse do you pull out to disable the anti theft system?

when you look the trunk of a 1994 cadillac deville which fuse u fuse do you pull out for the anti theft system?


Where is the fuel pump shut off switch in a 97 cadillac deville?

GM does not use inertia/reset switches. The system is computer controlled with relays.

People also asked

How do you reset computer after replacing the air conditioner compressor for a 1990 Cadillac Seville?

View results