Shifting

Discuss your 2000-2005 Bonneville SE, SLE, SSEi, Buick Le Sabre 00-05 and Buick Park Avenue 97-05. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
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deano55
Posts like an L36
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Joined: Sun Jan 01, 2012 7:38 pm
Year and Trim: 2003 Bonneville SSEI
Location: Morris, IL.

Shifting

Post by deano55 »

I have let my Bonneville sit for about three weeks before installing a new battery, it is now shifting like mush, with the canned tune from years ago it shifted much more firm, now its like original. any ideas?
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nos4blood70
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Year and Trim: 2003 SLE
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Re: Shifting

Post by nos4blood70 »

When you take the battery out, the computer will re-learn shifts. Drive it a couple of times and they will return back to normal.
-Car Guy Carl
"Penelope" - 2003 SLE - 250k Miles
"Sydney" - 2000 Honda S2000 - 101k miles
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deano55
Posts like an L36
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Posts: 1008
Joined: Sun Jan 01, 2012 7:38 pm
Year and Trim: 2003 Bonneville SSEI
Location: Morris, IL.

Re: Shifting

Post by deano55 »

nos4blood70 wrote:When you take the battery out, the computer will re-learn shifts. Drive it a couple of times and they will return back to normal.
yep you are correct, today its shifting like normal
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