Duramax Diesels Forum Truck of the Week
  #16  
Old 04-28-2009, 07:30 PM
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ripmf666 ripmf666 is offline
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Quote:
Originally Posted by WanaDmaxsub View Post
A little OT here....but...
This same (30 min) procedure works on a Saturn ION when you have to replace the ignition switch. The only thing I'll add is that you have to turn the key off after the last 10 cycle before you start the car. If you don't you have start all over again.

This is built into all Gm built cars and truck, You also have to turn it off on the trucks to on the last cycle.
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  #17  
Old 07-02-2012, 03:20 PM
andrewvega24 andrewvega24 is offline
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Security light isn't turning off?
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  #18  
Old 01-06-2014, 06:49 PM
HDLBZ HDLBZ is offline
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Quote:
Originally Posted by Kat View Post
Someone left me a message that they got there truck started. Here is how you do it in case anyone every needs to swap ECM's

Try to start it, then turn the key back to run. DO NOT TURN IT TO OFF.

Wait 11 minutes (time it).

Try to start again, then turn key back to run. ditto.

On the third cycle, it will ignore the VIN differences in the various modules and will start.

This is how you get a busted truck on the side of the road running when you fry the PCM. You put in a PCM from any other truck of the same type engine, and go through the procedure.

A Tech2 can do the same thing in 1 minute instead of 30 minutes.
If i would do this will my old ecm still work by just plugging it back in ?
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  #19  
Old 01-06-2014, 10:53 PM
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Originally Posted by HDLBZ View Post
If i would do this will my old ecm still work by just plugging it back in ?
Yes it will.
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  #20  
Old 01-07-2014, 02:59 PM
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Originally Posted by ripmf666 View Post
Yes it will.
thank you
I would like to get one of the ecm's programed with a switch installed does anyone on here do custom ecm's?
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  #21  
Old 01-07-2014, 03:15 PM
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Yes, check the vendors section, there's a few of them.
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  #22  
Old 01-07-2014, 03:21 PM
HDLBZ HDLBZ is offline
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thanks I'm new here and still trying to find my way around .
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  #23  
Old 01-07-2014, 11:01 PM
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We offer that service also along with autocals.
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  #24  
Old 06-24-2014, 08:06 PM
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Default lb7 lbz swap

Hi all I'm having trouble with the relearn I have tried 4 times it's just not unlocking the computer any help would be greatly appreciated. .
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