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resetting the computer????

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Old 02-02-2003, 02:32 PM   #1
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Default Re: resetting the computer????

Turn the key to "on", but not started. Pull the ECM-A and ECM-I fuses in the underhood fuse box. Put them both back in, at this point you should hear the fuel pump pressurize the fuel rails. Turn truck off - you are done.
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Old 02-02-2003, 10:52 PM   #2
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</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BigTex:
<strong> Turn the key to "on", but not started. Pull the ECM-A and ECM-I fuses in the underhood fuse box. Put them both back in, at this point you should hear the fuel pump pressurize the fuel rails. Turn truck off - you are done. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I thought it was ECM-B and ECM-1? This must be another way to do it? Usually I turn my key to the run position, the pull the two fuses that I mentioned, let it sit for 5 minutes, turn the key off, re-insert fuses and start the truck. It seems to work for me that way.
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Old 02-03-2003, 12:00 AM   #3
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Default Re: resetting the computer????

When would I want to reset the computer?
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Old 02-03-2003, 12:53 AM   #4
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Default resetting the computer????

How do you reset the computer for a 99 Sierra 5.3L. Can't remember what fuses to pull, for how long, if you need to set the parking brake??? you know the same ol' questions everybody ask...
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Old 02-03-2003, 05:41 AM   #5
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Default Re: resetting the computer????

I may have the A / B mixed up, but the other is an I not a 1. Its been since last march when I gor LS1 edit that I stopped resetting ses lights.
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Old 03-24-2015, 10:17 PM   #6
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hi i have a 1999 chevy silverado that i just put in a new computer but know it wont star with my old it stars but i still have a missfire on cylinder 4 i took it to gm the work on it replace coil packs spark plugs and all that goes along those lines so i was told to replace computer and i did but like i said it wont star is there a way that i could reset the computer so that the car can reconice the new divice pls help any one to much money in and im about give up the gm said that i have to have computer program they will do it but i have to pay 180 is there away around this
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Old 03-24-2015, 10:23 PM   #7
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Where did you get the PCM?

Is it a computer that needs to be programmed to have the 99 file on it or was it a computer that was already in another truck??

You could try a security relearn, sometimes that needs to be done because of the PK3 keys.
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Old 03-24-2015, 10:24 PM   #8
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Lol... 12 year old thread bump. That has to be a record but at least you used the search!!
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1999, 2002, 53, 53l, 99, avalanche, computer, ecm, ecm1, fuel, fuse, gmc, pull, reset, resetting, tahoe

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