Question about 1995 Cadillac DeVille

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95 deville what can i do to get these codes off one is 039,and041 i was told the pcm or prom would have to be replace

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Hold down the hot and off button tilldashlights up read codes when asked reset press reset

Posted on Aug 26, 2008


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Do I have to program my ecm on my 91 cadillac sedan deville 4.9l v8. I read that it is not necessary for models under 1999

Why ? what are you trying to do ? Replace it with a used one ? Your vehicle PCM has a prom chip inside , just pull it an transfer to the new (used ) PCM / ECM . This chip has the correct running info for your vehicle.

Jun 02, 2018 | Cadillac Cars & Trucks

1 Answer

Pcm was stolen at repair shop. put re-maned one and had it programed to it wont stay running and has a miss. ran like new prior,,had trans replaced

Bought a bad PCM? Wrong one? Just got a PCM, it was for a 3.4 engine. They told the manager it would work for a 3.8. I told the manager it won't. Had to hook it up and prove it to the manager. Security was the first issue, then the transmission would be the next. I didn't even make it pass the security. A 3.4 PCM will run the 3.8 engine, with other computers replaced. But will not run the transmission correctly. And this is our problem. I told the manager to inform the customer that they had the wrong PCM. I also told him to give the car back. Then told him I could fix it, but needed PCM,BCM, Ignition switch,key and chip, from one junk car.

May 28, 2016 | 2005 Cadillac Deville

1 Answer

1990 Chevy Carprice won't start no check engine

check pcm fuse sound like could be pcm problems have vechicle code scan look for code 51 which is faulty prom mem cal or ECM PCM

May 21, 2013 | Cars & Trucks

1 Answer

Whats a pcm for a 95 cadillac deville

PCM is the Powertrain Control Module. If you use the fan down button it will scroll through the different systems ACP ICP TCS etc. The PCM is the one you want to worry about though. Pushing the fan up button will select the pcm. Then it will give you options from there. The PCM controls ignition, shifting points, and a whole bunch of other related things.

Feb 03, 2013 | 1995 Cadillac DeVille

2 Answers

Replaced my computer on my 1998 cadillac deville and now it's telling me I have an anti-theft problem and it won't start - now what

If done at a Cadillac dealer it would not be doing that now. The PCM will need to be flashed with the VIN number of your car to operate again. ANY TIME THE COMPUTER IS CHANGED THE VEHICLE IDENTIFICATION NUMBER NEEDS TO BE ENTERED INTO THE prom IN THE COMPUTER

Apr 01, 2010 | 1998 Cadillac DeVille

2 Answers

Car blew PCM fuse and would not run, replaced the PCM with a rebuilt pre-programmed unit. Now the car starts but runs very rough and smells very rich and has no power

did you use your old prom chip? when you changed it out/ if not then it wont run right not all pcm's/ecms use the same prom chips per year model

Jan 22, 2010 | 2000 Plymouth Breeze

1 Answer

95 cadillac deville heating and cooling problem

air pocket in the cooling system the leaking could be the overflow

Jan 11, 2009 | 1995 Cadillac DeVille

1 Answer

Where is the PCM located on a 1991 Oldsmobile 98 Regency elite?

The PCMor powertrain control module is only on 1996 and newer cars.Earlier models have a ECM or electronic control module/pcm.You want to change the ECM if its a 1992.Its located under the right hand side of the instrument panel.The ecm has a prom( programmable read only memory)in it.You will need to remove this from the old ecm and install in the new ecm.The ECM/PCM can be used in many different GM vehicles but the prom is very specific and must be used only in the vehicle it was designed.The prom will not come with the new ecm and must be carefully removed and installed on the new ecm.There also is a CALPAK in the ECM ( A devise for fuel delivery) This may come with the new ECM But make sure all parts are the same.You should get a vehicle repair manual to do this job correctly,and make sure you do not damage your PROM.Your PROM is very IMPORTANT!

Oct 21, 2008 | 1991 Oldsmobile Ninety Eight

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