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Re: Do I have to reprogram the ECM in my catera when I...
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
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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!
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.
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.
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.
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.
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.
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
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