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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > General H2 Discussion

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  #1  
Old 06-18-2012, 05:01 PM
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ryaleon ryaleon is offline
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Default Re: Tuner and PCM

ok, got PCM took all of 5 minutes. Thank you very much for the help.
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  #2  
Old 06-21-2012, 01:46 AM
Stellar Stellar is offline
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Default Re: Tuner and PCM

Just as a precaution I would hook up a battery charger while flashing your ECU. If the volts drop the tuner won't speak properly to the ECU which can cause all sorts of problems.
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