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What program can edit/change the onboard computer for a buick lesabre?

April 26, 2017buick Computer edit lesabre onboard program

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What program can edit/change the onboard computer for a buick lesabre?

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Its a 97 buick lesabre and i was wondering what kind of program i could put on a laptop and change some of the shift points, etc by directly connecting it to the car without buying a chip for it. Thanks A: its a 97 which means its OBD2, which means there is no computer chip to change. search google for “obd2 tuner” and you should be able to find quite a few programs that will do it, some are free, too.