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I am installing new batts tomorrow. Would I be BEST to reset the computer in the process or leave it as is.....please input and do pool too please.
THANKS
I voted yes because it is a non issue. The act of replacing the batteries is going to reset the PCM weather you want it to or not. So the answer is automatically yes.
I voted yes because it is a non issue. The act of replacing the batteries is going to reset the PCM weather you want it to or not. So the answer is automatically yes.
Thanks thats what I was thinking but didn't know for sure.
Edit - But couldn't you change one at a time and still keep power to the pcm?
Last edited by Betthebux; Jan 15, 2006 at 05:32 PM.
I am installing new batts tomorrow. Would I be BEST to reset the computer in the process or leave it as is.....please input and do pool too please.
THANKS
It depends on what you mean by clearing the PCM. Disconnecting both batteries at once will automatically erase any stored or pending DTCs, as well as wipe out your radio presets, etc. However, you must leave them disconnected for more than five minutes in order to reset Keep Alive Memory, which is the PCM's bank of 'learned' adaptation.
I voted yes, especially if you have a tune installed in the truck. Get your tuner out and restore the stock tune, as if you were going to sell the tuner. That way if something goes wrong, your tuner is not "married" to a non-existant ECU.
It depends on what you mean by clearing the PCM. Disconnecting both batteries at once will automatically erase any stored or pending DTCs, as well as wipe out your radio presets, etc. However, you must leave them disconnected for more than five minutes in order to reset Keep Alive Memory, which is the PCM's bank of 'learned' adaptation.
Best way to do it is to disconnect all power and then turn on headlights and such to drain all that is left....then leave everything off for a while
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