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Buick Enclave Transmission Questions

18 messages,  Last post on Jan 12, 2009 at 8:06 AM

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#15 of 18 by gunga Dec 09, 2008 (5:49 am)
OK, had my Transmission Re-Programed 4 days ago. Now I don't go crazy with the constant upshifts and downshifts. Milage seen to be down about .5 but it is will worth it.   BTW: Take the Document ID # to the dealer. My dealer/Service Guys had never heard of the problem.      Document ID: 2177083 #08-07-30-022A: Hesitation or Flat Spot Between 56-80 km/h (35-50 mph) (Reprogram Transmission Control Module) - (Aug 1, 2008)
#16 of 18 Transmission Shift Points by nealschwartz Dec 30, 2008 (11:57 am)
I drive two speed limit stretches every morning, one being 35MPH and the other 30MPH. My 2009 Enclave CXL AWD seems to lock at 4th Gear during the 30MPH zone, and 5th gear at the 35MPH zone. Even though I'm not accelerating it will not go up a gear. The problem is, unless I put on cruise control I may drop to about 33 MPH and the transmission will shift down. It's like there's a shift point between 33 and 35 that you get that shifts either coasting, accelerating, or decelerating. Every time you move between those speeds it shifts. My wife thought I was jerking the accelerator, stepping on it then letting go. Any fix known? It's like downshifting to slow down, but it's automatically done. Replies to this message: gunga (Jan 01, 2009 5:38 am)
#17 of 18 Re: Transmission Shift Points [nealschwartz] by gunga Jan 01, 2009 (5:38 am)
Replying to: nealschwartz (Dec 30, 2008 11:57 am) The fix to the downshifting problem is the Re-programming.
#18 of 18 Buick Enclave Sudden Acceleration by stagefam Jan 12, 2009 (8:06 am)
My 2008 Buick Enclave suddenly lurched forward as I was pulling into a parking space. My foot was not on the accelerator or the brake. Has anyone had a similar problem or have any ideas??

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