Will a flashed PCM throw a P0603?
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Tuned
Joined: May 2008
Posts: 282
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From: Pearl River, LA
Will a flashed PCM throw a P0603?
I ask because I am still getting a P0603 DTC. However, upon removal and inspection of the PCM, there is no chip installed. 
I suspect the PCM was flashed by the original owner because the P0603 DTC is being thrown, there is no physical modification and....drum roll....there is a SuperChips sticker inside the glovebox!!
I suspect the PCM was flashed by the original owner because the P0603 DTC is being thrown, there is no physical modification and....drum roll....there is a SuperChips sticker inside the glovebox!!
Cargo Master
Joined: Mar 2006
Posts: 2,502
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From: Bend Oregon
man I hope this is not the case for you
good luck .
Nothing to add just a bump at the least
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Joined: Mar 2005
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From: Hoschton,GA
I ask because I am still getting a P0603 DTC. However, upon removal and inspection of the PCM, there is no chip installed.
I suspect the PCM was flashed by the original owner because the P0603 DTC is being thrown, there is no physical modification and....drum roll....there is a SuperChips sticker inside the glovebox!!
I suspect the PCM was flashed by the original owner because the P0603 DTC is being thrown, there is no physical modification and....drum roll....there is a SuperChips sticker inside the glovebox!!
That is a common code to get when you flash the PCM or add a chip.
Why not reflash the PCM to a factory flash? This will make it go away.
Diane
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Tuned
Joined: May 2008
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From: Pearl River, LA
Ok, this makes sense then. Thanks for your input, Diane.
I do not have any engine problems and the truck runs like a whistle. I'll leave her be for now.
I'm not interested in any aftermarket parts/programming. I just want her to see 300,000 miles and take good care of her so she will take good care of me.
I do not have any engine problems and the truck runs like a whistle. I'll leave her be for now.
I'm not interested in any aftermarket parts/programming. I just want her to see 300,000 miles and take good care of her so she will take good care of me.
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Joined: Mar 2005
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From: Hoschton,GA
As long as its a PCM from a DPC-422 family.
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Jody & Diane Tipton- DP-Tuner®
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Post Fiend
Joined: Feb 2007
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From: Blairsville,Ga
Then you can reflash my MNM1 to a PMT1 or PMT2
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From: Hoschton,GA
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