Pcm

I have a 2001 Impala and Pep Boys just did a flowchart diagnosis on it, and said that I probably need the PCM replaced. I know that a dealership has to do the work, but I was wondering if I can replace it and how hard would that be. Also need the location of where the PCM is. PLEASE REPLY!

I have a 2001 Impala and Pep Boys just did a flowchart diagnosis on it, and said that I probably need the PCM replaced. I know that a dealership has to do the work, but I was wondering if I can replace it and how hard would that be. Also need the location of where the PCM is. PLEASE REPLY!
Well lets start at the beginning..
What is wrong with your vehicle?
Having Pep boys do powertrain diagnosis is like going to McDonalds and asking for a Taco Supreme :banghead:

yeah, if your PCM goes bad, you know it. but replacing it you can do your self its easy to find and all you have to do is unplug it and plug in the new one and have your car relearn the new one, which I forgot how to do. but when you replace it you just have to make sure your battery has a full 12 volts. but your pcm is located in you stock air box of all places. act ilke your going to replcae the air filter, and take that cover off, then get a driver and take off the two screws or bolts that hold the second half of your air box together and then you will see your PCM.


I gutted my sir box so this picture is of right behind the driver side headlight, yours wont look like this, itll have plastic air box left of it, but that is your PCM.

http://i18.photobucket.com/albums/b146/bigrod118/100_0691.jpg

yeah, if your PCM goes bad, you know it. but replacing it you can do your self its easy to find and all you have to do is unplug it and plug in the new one and have your car relearn the new one, which I forgot how to do. but when you replace it you just have to make sure your battery has a full 12 volts. but your pcm is located in you stock air box of all places. act ilke your going to replcae the air filter, and take that cover off, then get a driver and take off the two screws or bolts that hold the second half of your air box together and then you will see your PCM.


The PCM is not a "plug and Play" piece!.
The new PCM must be programmed

and have your car relearn the new one

did you miss that part.

OH yeah if you're going to replace this yourself in the driveway have a tow truck on stand-by ( to take you to the dealership sevice dept )

also remember to dissconnect your battery its also good to hook up a 9 volt battery to a lighter plug and PLUG it in to the lighter socket that way you computer will not lose all power and you wont have other problems down the road


OH yeah if you need it done. have a dealership service dept check first and let them do the work its safer that way

did you miss that part.
No I didn't miss it...your incorrect information shows your lack of knowledge of GM operating systems :loser:
The PCM will have to be flashed with all the calibrations specific to the VIN of the vehicle.
This means you will have to visit your local GM dealer to have this done.
Plus the following other procedures must be done.
CKP System Variation Learn Procedure

GM Oil Life System - Resetting

Inspection/Maintenance (I/M) Complete System Set Procedure

Programming Theft Deterrent System Components