How do you know if a ecm is locked by the tuner?

Slammed2007Lbz

Super Spicy Tunaz
Feb 1, 2009
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I tried to read the tuning in my cousins truck he just bought. It is a lmm with a dsp5 by crank it up diesel. What error message do you get if the tuner has the ecm locked?
 

DIESELMAFIAPER.LB7

<----new hotness
Jan 17, 2010
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idaho
shop.dieselmafiaperformance.com
You dont its dumb but you have to look up his os of the tis site and hope to god it flashe in with no bugs or you can take it to gm have them flash in a new stock tune and rebuild it. Also try asking the tuner for it i doubt they give it to you but worth a shot
 

Bobo

New member
Aug 27, 2006
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I can send you a stock OS if you need one. Why is it being changed in the first place?
 

Slammed2007Lbz

Super Spicy Tunaz
Feb 1, 2009
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NE Ohio
Yeah i guess i will have to call crankitupdiesel and see if they will send me the file so that i can modify it for him and reflash it in his truck. Its not like im stealing it for my truck he wants me to make some changes to some of the tuning for him. I was unaware you couldnt read dsp from a lbz/lmm
 

Slammed2007Lbz

Super Spicy Tunaz
Feb 1, 2009
1,118
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NE Ohio
I don't really need a stock OS because i just want to make some changes to his tuning for him, tire size has changed, the high hp tune is frying his trans so i want to detune it some and also full around with some of the other to try to obtain better fuel mileage
 

TheBac

Why do I keep doing this?
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Apr 19, 2008
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Wasnt trying to be a jerk there, just seemed to be the easiest way to go about it.
Maybe try to find another LMM ecm and make your own tunes for it?
 

Bobo

New member
Aug 27, 2006
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Yeah i guess i will have to call crankitupdiesel and see if they will send me the file so that i can modify it for him and reflash it in his truck. Its not like im stealing it for my truck he wants me to make some changes to some of the tuning for him. I was unaware you couldnt read dsp from a lbz/lmm

They should make some minor changes like that for little to no charge. If not, let me know and I'll write some little tunes for if you don't want to do it.