Mechanics

AUTOMATIC TRANSMISSIONS

2010 Buick La Crosse • 6 cylinder FWD • 11,300 miles

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.
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Lotto38
July 22, 2011.



It was recalibrated to specs what is about shifting you don't like?

Docfixit
Jul 22, 2011.
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.

Tiny
Lotto38
Jul 22, 2011.
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

Docfixit
Jul 23, 2011.
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?

Tiny
Lotto38
Jul 23, 2011.
That I doubt they may not have software to do that.
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Docfixit
Jul 23, 2011.
Thank you for your help.

Tiny
Lotto38
Jul 23, 2011.

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