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Odd shifting in Manumatic mode

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Old Jul 29, 2010 | 01:35 PM
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NOXQCS's Avatar
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Question Odd shifting in Manumatic mode

I just bought my '03 5AT Sedan about a month ago so I'm relatively new to the G scene.
When I switch from Auto to Manumatic and downshift from 4th to 3rd, most often I have to hit it twice before it will actually downshift to 3rd.
The previous owner seems to have put a grounding kit in the car and I'm wondering if that could be the problem if the install was done poorly.
Any thoughts as to what could be going on?
 
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Old Jul 30, 2010 | 07:41 PM
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From: North Bay 707
Are you in D then switching over and shifting down to third or are you in 4th and downshifting into 3rd. It wont switch sometimes if your foot is off the gas.
 
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Old Aug 3, 2010 | 01:55 PM
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Originally Posted by DEMoLITIoN
Are you in D then switching over and shifting down to third or are you in 4th and downshifting into 3rd. It wont switch sometimes if your foot is off the gas.
It happens both when I switch from D over and shift down to 3rd and when I'm driving strictly in manumatic mode and downshifting from 4th to 3rd...
 
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Old Aug 3, 2010 | 05:34 PM
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Remove the grounding kit and see if that solves your problem.

You could also try doing an ECU reset and see if that helps.

Not a common issue that people deal with, however sometimes the trans can be slow to respond to downshifts in MM.
 
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Old Aug 3, 2010 | 06:32 PM
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Sometimes it doesn't let me downshift in MM. Makes me wait like 3 seconds to downshift.
 
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Old Aug 4, 2010 | 11:40 AM
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Transgo VB kit will make it much more responsive. Downshifts are instant for me now.
 
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