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Old 09-10-2009, 01:50 AM   #3 (permalink)
wagonman76
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Join Date: Jun 2008
Location: Northwest Lower Michigan
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Red Car - '89 Chevrolet Celebrity CL 4 door
Team Chevy
90 day: 36.47 mpg (US)

Winter Wagon - '89 Pontiac 6000 LE Wagon
90 day: 28.26 mpg (US)
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Yes you would have to work around the computer. The 3800/4T60E compares RPM with road speed and is pretty sensitive to any discrepancies between the two. If the TCC even slips when it shouldn't, it throws a code and locks you out of TCC and OD till you shut it off and restart.
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