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Old 09-06-2012, 09:28 PM   #1
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Old 09-06-2012, 11:06 PM   #2
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I don't think it'* a good idea to modify the PCM on a car under warranty.
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Old 09-07-2012, 07:31 AM   #3
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I agree. Any serious modifications to a vehicle should wait until after the warranty expires. Unless the dealer installs it for you.
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Old 09-09-2012, 01:08 AM   #4
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once it'* out of warranty, GM couldn't care less if you assplode the engine or transmission all over the road.
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Old 09-09-2012, 09:51 AM   #5
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My suggestion would be to get a second PCM, and tune that one. Then swap over for any work.
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Old 09-09-2012, 10:49 AM   #6
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That'* one way to do it. Get a second PCM. But, it wouldn't surprise me if GM say'*, well, we are not going to warranty that because that'* not the original PCM that was installed at the factory. And because "we" did not replace the PCM, we are not going to honor your warranty.
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Old 09-09-2012, 11:26 AM   #7
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That'* why you tune the 2nd PCM and leave the OEM totally stock.
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Old 09-09-2012, 12:09 PM   #8
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Good point.
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