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calibrating speedo w/ to 373s

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Old 07-11-2006, 06:14 PM
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Default calibrating speedo w/ to 373s

before i get these gears put in what will need to be done with the speedometer????
Old 07-11-2006, 06:26 PM
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The PCM will have to be programmed for the new gears, it'll run but the speedo will be off.
Old 07-11-2006, 06:47 PM
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thanks for the reply.. so any gm dealer / mechanic can do this ?????




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