Question about 1998 Cadillac Catera

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Do I have to reprogram the ECM in my catera when I replace it?

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Only a dealer or a qualified repair shop can do this for you. I data link must be attached from the ecm to flash the VIN into the ecm to make it operate to run the engine

Posted on Aug 24, 2012

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Posted on Jan 02, 2017

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Steps to replace the ecm. do I need to unhook the battery, or anything. After it is replaced, is there any other steps like resetting anything?


Replacing and ECM is a farily involved job which will require reprogramming the replacement ECM to match the vehicle that it is installed in. Dealerships and a few independent service facilities are set up to do the reprogramming but the unprogrammed ECM may not even be able to start the vehicle until programmed so it's not a DIY kind of project. It's RARE that a vehicle needs the ECM replaced as there are a quite a few problems that can mimic a bad ECM and often an ECM problem can be fixed with a reflash update of the software. Hope this helps and good luck!

Oct 04, 2011 | 2005 Chevrolet Malibu

3 Answers

If I replaced the PCM on the 2005 dodge ram truck would I have to reprogram the keys to make the truck run?


If you key has a chip in it, you will probably have to get your ECM reprogrammed with the proper VIN, since it no longer matches the original VIN on your Vehicle. I don't think the dealer would program your keys to a mismatched VIN number, so more than likely you will need your ECM reprogrammed with the proper VIN. This will need to be taken to the Dodge Dealership to be fixed.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

Mar 14, 2011 | 2005 Dodge Ram 1500

1 Answer

1998 catera has no heat on driver side but has heat on pass


The first issue is to reprogram the blend doors for the HVAC system. You can do this yourself by pressing on the Off/On button and the drivers side temperature control knob at the same time for five seconds. Then release the buttons and you should hear the doors moving as the system reprograms itself. Good Luck.

Dec 03, 2010 | 2000 Cadillac Catera

2 Answers

Where is the TCM located on a 1998 Catera? PLEASE HELP!! Thanks Kim


Tcm is located beside the battery under a triangle shaped cover it's about 6"x8", silver colored. slides up and out. I had to buy a used one off ebay and had a GM dealer reprogram it. Bad thing is there hard to come by used. They have to have the exact same manufacture number. $100.00 to reprogram it. I shorted my tcm out trying to give some body a jump start, Jumper cable popped off and shorted across metal on the tcm and positive on the battery.

Nov 08, 2010 | 1998 Cadillac Catera

1 Answer

I have a 2000 cadi catera when i turn on the heat it only heats the passenger side of the car i have dual climate control


The first issue is to reprogram the blend doors for the HVAC system. You can do this yourself by pressing on the Off/On button and the drivers side temperature control knob at the same time for five seconds. Then release the buttons and you should hear the doors moving as the system reprograms itself. Good Luck.

Nov 04, 2010 | 2000 Cadillac Catera

1 Answer

Want to replace the computer on a 1996 olds achieva is it easy?


ECM IS LOCATED ON THE RIGHT SIDE OF THE INSTRUMENT PANEL ITS NOT HARD OR EASY BUT WHEN REPLACING ECM IT HAS TO BE REPROGRAM NOT A HOME FIX UNLESS YOU HAVE A GM TECH 2 SCANNER TO REPROGRAM ECM WITH.YOU HAVE TO REPROGRAM IDLING - CRANKSHAFT SENSOR - AND THEFT SECURITY SYSTEM.

Aug 20, 2010 | 1996 Oldsmobile Achieva

2 Answers

2000 Cadillac Catera-Engine cuts out while driving or coming to a complete stop while on a bit of a downward decline. WILL NOT RESTART for anywhere between 1-3 hours. Battery replaced, issue still...


it's the cps (crankshaft position sensor)
it cuts off the power to the fuel pump as a preventive mesure, it's a very common problems with the catera
i had the same problem with my 2000 model

Mar 10, 2010 | 2000 Cadillac Catera

1 Answer

1997 cadillac catera


it is the ecm on the car it is not reading that the car is trying to start change the ecm computer and it will run

Oct 29, 2008 | 1997 Cadillac Catera

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