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08-12-2012, 02:46 PM
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#1 | |
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AF Newbie
Join Date: Aug 2012
Location: Munising, Michigan
Posts: 1
Thanks: 0
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Lagging trans downshift
After braking down to 15 or 20 mph my 2004 Trailblazer transmission has a slight hesitation and clunks when I start to give it the gas. Could this be
due to a sticking modulator or some other issue? |
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08-12-2012, 07:04 PM
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#2 | |
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A990 racer
 Join Date: Mar 2002
Location: Chestertown, New York
Posts: 16,954
Thanks: 25
Thanked 371 Times in 365 Posts
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Re: Lagging trans downshift
Welcome to AF, no modulator it is pcm controlled. The clunk could be anything needs to be checked on site. The downshift issue again can be a difficult diagnosis, engine load/speed, throttle position, state of tune are all in the mix when it comes to trans shift issues. Full scan for pending codes and sensor inputs is the first step.
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