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[Z06] Transmission C5 2004 Z06

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Old 02-11-2017, 03:12 AM
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zmike777
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Default Transmission C5 2004 Z06

Hi There!

I have just bought a z06 2004, and all the shifts change well, except the reverse and i want to know what is the best way to fix the reverse???

Thanks and i will wait the answer!

Miguel.
Old 02-11-2017, 07:23 AM
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Ruger Brian
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Hey there Miguel. Welcome.

So - is it just difficult to get into reverse? Is this when cold or warmed up?

My Z06 can be difficult when cold, however I just move the shifter into one of the other gears before and it'll slip right into reverse...
Old 02-11-2017, 10:31 AM
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bikeriderga
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Originally Posted by zmike777
Hi There!

I have just bought a z06 2004, and all the shifts change well, except the reverse and i want to know what is the best way to fix the reverse???

Thanks and i will wait the answer!

Miguel.
Ruger is right. I have to let out the clutch to just before engage to get it into reverse when cold. Just a quirk of the car.
Old 02-11-2017, 12:22 PM
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grantv
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Originally Posted by bikeriderga
Ruger is right. I have to let out the clutch to just before engage to get it into reverse when cold. Just a quirk of the car.
Interesting, I always back my car in my garage and at work, will have to try this after the snow goes away (seems soon now).
Old 02-11-2017, 02:28 PM
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JETninja
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Stock shifter? How many miles on the car? Upgrade to a C6 or a MGW and it may get easier to get into reverse with a newer unit that has no play.....
Old 02-12-2017, 10:21 PM
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zmike777
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Originally Posted by Ruger Brian
Hey there Miguel. Welcome.

So - is it just difficult to get into reverse? Is this when cold or warmed up?

My Z06 can be difficult when cold, however I just move the shifter into one of the other gears before and it'll slip right into reverse...

Hi Again and thanks for your answer:

Look the reverse not enter well cold and warm the car, the other gears change very well, i am thinking that maybe i need to see if clutch and trans are doing well their jobs... what else???
Old 02-12-2017, 10:23 PM
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zmike777
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Originally Posted by JETninja
Stock shifter? How many miles on the car? Upgrade to a C6 or a MGW and it may get easier to get into reverse with a newer unit that has no play.....
28000 miles on car and stock shifter... i will try that!

Thanks.
Old 02-13-2017, 12:28 PM
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Moto One
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Seeing that I had this problem here is what is happening. At some point in life someone dumped the clutch in Reverse. (I did). What many believe is that the shift fork took the load and bent. On mine what really happen is that the C-clip and washer were damaged, this allowed enough of a gap in the gears spacing so as not to let the synchro engage. It was an easy fix but Trans needs to be dropped, reverse is the first gear cluster when opening the trans.

You can see the movement gap in the photo below.


Mark
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Old 02-13-2017, 03:35 PM
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JETninja
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Wow, good info. My last Z had over 53K and the C6 shifter worked great. Just installed it on my new Z (under 9K miles) which had a no name super short shifter that took two hands to get into reverse but always worked. Like the C6Z one a lot better.....
Old 02-13-2017, 07:32 PM
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MY03C5Z
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Originally Posted by Moto One
Seeing that I had this problem here is what is happening. At some point in life someone dumped the clutch in Reverse. (I did). What many believe is that the shift fork took the load and bent. On mine what really happen is that the C-clip and washer were damaged, this allowed enough of a gap in the gears spacing so as not to let the synchro engage. It was an easy fix but Trans needs to be dropped, reverse is the first gear cluster when opening the trans.


Mark
Just curious, was that an accident that you dumped it in reverse or was that intentional? Reverse burnout are really bad news on most cars, drive lines are designed to handle hard forward acceleration, not so much in reverse lol, things can get f'd up real fast when doing that.
Old 02-13-2017, 11:29 PM
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glfrmrk
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Originally Posted by zmike777
Hi There!

I have just bought a z06 2004, and all the shifts change well, except the reverse and i want to know what is the best way to fix the reverse???

Thanks and i will wait the answer!

Miguel.
See the post "1st and reverse won't go in all the time!" Jan. 26, 2017. Maybe more ideas there. Save the wave!

Last edited by glfrmrk; 02-13-2017 at 11:33 PM. Reason: Wrong date
Old 02-14-2017, 10:02 AM
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Moto One
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Originally Posted by MY03C5Z
Just curious, was that an accident that you dumped it in reverse or was that intentional? Reverse burnout are really bad news on most cars, drive lines are designed to handle hard forward acceleration, not so much in reverse lol, things can get f'd up real fast when doing that.
Well, it was a combo of wet driving shoes, and backing after overshooting a corner, may have been the start of the damage, then when it started kicking out in normal backing, in frustration I may have (I did) not helped the poor trans. And we also back up our rather steep 100' driveway, and over the years also could have also added to the wear.

As my father taught me, you broke it, you fix it.

Mark.
Old 02-15-2017, 11:01 PM
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2003Evo
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You are not the only one, going in reverse can be a pain with stock shifter and its pretty common. I have a mgw and still sometimes it feels like its not in reverse completely. The best way to do it is go into first or second then go from there to reverse. There are plenty of threads on reverse gear.

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