Question about 1989 Cadillac Eldorado

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Computer storing codes; need to clear them.

I want to know how to clear the codes on a 89 Cadillac Elderado?

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With the ignition ON, press OFF and WARM on the A/C panel . Ahter codes appear , press OFF and HI to clear codes. If faults still remain, codes WILL NOT CLEAR. Hope this helps

Posted on Apr 20, 2009

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1 Answer

How do I reset the computer


to clear codes remove positive connection at battery for 10 seconds or can go to an auto store most will hook up scanner for free and can clear codes if need to flash computer that will more than likely be done by a dealer but you can check with some of the local auto shops not stores and ask if they have equiptment to flash vehicle computers

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Im trying to find a easy way to install a flywheel on a 1973 cadillac elderado


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Dec 06, 2013 | Cadillac Cars & Trucks

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Excuse me sir,My brakes hiss when i press the pedal. Also my brakes are very soft and the engine revs up when press the brake. I drive a 1985 Cadillac Elderado Biarriitz


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Nov 06, 2010 | Cadillac Eldorado Cars & Trucks

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I put a computer out of a 1993 elderado in my 1992 cadillac sedan deville it feels like i lost my power


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Feb 28, 2010 | 1992 Cadillac DeVille

1 Answer

Clear the code from the ECU


For the purposes of the D.I.C. 
LO = NO
HI = YES

Starts here:

PRESS: 
OFF & WARM (red button) together
-the D.I.C. will light up the instrument cluster like a Christmas tree
- the D.I.C. will start diagnostics, as soon as it starts displaying ..

PRESS: 
LO 
- until " ECM " comes up

PRESS:
HI
- until " CLEAR CODES ? " comes up

PRESS:
HI
- press only once
- response will be in a few seconds: CODES CLEARED

you are done ...

PRESS RESET and you are back to normal 


Good Luck and Hope this helps

Apr 20, 2009 | 1989 Cadillac Eldorado

1 Answer

89 Cadillac sedan deville when car is on the service engine light comes on and have to disconnect the battery to restart the computer


Disconnecting the battery will neither clear the code, nor stop the light from coming on. Press OFF and WARM together on the a/c panel to read codes. Once repair is made, codes can be cleared by pressing and holding the OFF and HI buttons

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1 Answer

How do i shut off the service soon light on my cadillac


You will have to take it to a repair shop that has an OBD I scan tool to clear the code(s), you maybe able to clear the code(s) by disconnecting the battery for about 10 - 15 min. And see if that works (depending on what type of fault code was stored to set the light). Hope this helps.

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