Automatic transmissions

2010 BUICK LA CROSSE
11,300 MILES • 6 CYL • FWD
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LOTTO38
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This pertains to transmissions.
Buick 2010 LaCrosse . Recalibrated for problem(didn't fix problem). It now shifts later in each gear. Don't like the way it shifts now. Can it be recalibrated back to original specs? Dealer says it cannot be done.
Jul 22, 2011 at 8:35 PM
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DOCFIXIT
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It was recalibrated to specs what is about shifting you don't like?
Jul 22, 2011 at 8:54 PM
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LOTTO38
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The tranny shifts at about 500 rpm higher than originaly. This was supposed to take care of a problem, but it did not, and now I an stuck with a tranny that shifts at a higher rpm, thus hurting my mileage.
Jul 22, 2011 at 9:32 PM
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DOCFIXIT
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Found A TSB for trans shifting at wrong time REf 09-07-30-016A Date Nov. 25, 2009 ask dealer if that was what they did. If not can they do TSB see if that helps
Jul 23, 2011 at 5:30 PM
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LOTTO38
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OK, I will do that, but I guess what I am trying to say is, can you reprogram a tranny without a TSB? In other words, put it back before the TSB that they put on?
Jul 23, 2011 at 6:20 PM
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DOCFIXIT
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That I doubt they may not have software to do that.
Jul 23, 2011 at 7:37 PM
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LOTTO38
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Thank you for your help.
Jul 23, 2011 at 7:44 PM