6 speed Shift Problems
Thread Starter
Cruising
Joined: Feb 2009
Posts: 10
Likes: 0
From: Houston Texas
6 speed Shift Problems
I recently purchased a 2007 ZO6 from an individual. I have had the car about 3 months and am now having probvlems shifting into 2nd gear.
Shifting into 2nd gear had a slight bind and now most of the time it refuses to go into gear.
At idle I can shift into 2nd with no problem, it is only when I am under acceleration. This car only has 7300 actual miles.
Shifting into 2nd gear had a slight bind and now most of the time it refuses to go into gear.
At idle I can shift into 2nd with no problem, it is only when I am under acceleration. This car only has 7300 actual miles.
Retired & lovin' it!
Joined: Mar 2005
Posts: 4,472
Likes: 545
From: Jackson NJ
I recently purchased a 2007 ZO6 from an individual. I have had the car about 3 months and am now having probvlems shifting into 2nd gear.
Shifting into 2nd gear had a slight bind and now most of the time it refuses to go into gear.
At idle I can shift into 2nd with no problem, it is only when I am under acceleration. This car only has 7300 actual miles.
Shifting into 2nd gear had a slight bind and now most of the time it refuses to go into gear.
At idle I can shift into 2nd with no problem, it is only when I am under acceleration. This car only has 7300 actual miles.
Drifting
Joined: Apr 2006
Posts: 1,276
Likes: 5
From: Ambler Pa.
I recently purchased a 2007 ZO6 from an individual. I have had the car about 3 months and am now having probvlems shifting into 2nd gear.
Shifting into 2nd gear had a slight bind and now most of the time it refuses to go into gear.
At idle I can shift into 2nd with no problem, it is only when I am under acceleration. This car only has 7300 actual miles.
Shifting into 2nd gear had a slight bind and now most of the time it refuses to go into gear.
At idle I can shift into 2nd with no problem, it is only when I am under acceleration. This car only has 7300 actual miles.
about ditching the cags. Also check or change the fluid in the clutch master cyl. Check and or change trans. oil.
Safety Car
Joined: Oct 2003
Posts: 4,024
Likes: 13
From: Loveland CO to Central Coast CA
Might be a combination of things that are slightly off, such as a weak/damaged synchro, shift linkage, etc. Cooler weather (longer warm-up) might also contribute.
For starters, look at the clutch fluid. Changing it might be worth a try:
But I'm guessing that won't fix the problem. Might need a trip to the dealer.
Also if you get a chance, drive another C6 and see how it compares.
For starters, look at the clutch fluid. Changing it might be worth a try:
But I'm guessing that won't fix the problem. Might need a trip to the dealer.
Also if you get a chance, drive another C6 and see how it compares.
Burning Brakes
Joined: Jan 2011
Posts: 825
Likes: 99
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,717
From: Springfield MO
I recently purchased a 2007 ZO6 from an individual. I have had the car about 3 months and am now having probvlems shifting into 2nd gear.
Shifting into 2nd gear had a slight bind and now most of the time it refuses to go into gear.
At idle I can shift into 2nd with no problem, it is only when I am under acceleration. This car only has 7300 actual miles.
Shifting into 2nd gear had a slight bind and now most of the time it refuses to go into gear.
At idle I can shift into 2nd with no problem, it is only when I am under acceleration. This car only has 7300 actual miles.
It's covered in your owners manual.
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
Like others have noted, it appears you are trying to shift into 2nd gear when the CAGS is locking you out. Have you noticed the 1->4 light on the face of the tach lighting up? When it's lit, a solenoid in the transmission is locking out 2nd gear and makes you shift to 4th gear. You can purchase a CAGs eliminator that gets rid of this nuisance for $20. Then you can drive your car and shift it into second gear when it feels natural to you, instead of when the computer thinks it's appropriate.
It's covered in your owners manual.
It's covered in your owners manual.
2007 owner's manual, page 193.
One-to-Four Shift Light
(Manual Transmission)
When this light comes
on, you can only shift
from FIRST (1) to
FOURTH (4) instead of
FIRST (1) to
SECOND (2).
You must complete the shift into FOURTH (4) to
turn off this feature. This helps you get the
best possible fuel economy.
After shifting to FOURTH (4), you may downshift
to a lower gear if you prefer.
Notice: Forcing the shift lever into any gear
except FOURTH (4) when the 1 TO 4 SHIFT light
comes on may damage the transmission.
Shift only from FIRST (1) to FOURTH (4) when
the light comes on.
This light will come on when:
• The engine coolant temperature is higher than
169°F (76°C),
• the vehicle is going 15 to 19 mph
(24 to 31 km/h) and
• the vehicle 21 percent throttle or less.
(Manual Transmission)
When this light comes
on, you can only shift
from FIRST (1) to
FOURTH (4) instead of
FIRST (1) to
SECOND (2).
You must complete the shift into FOURTH (4) to
turn off this feature. This helps you get the
best possible fuel economy.
After shifting to FOURTH (4), you may downshift
to a lower gear if you prefer.
Notice: Forcing the shift lever into any gear
except FOURTH (4) when the 1 TO 4 SHIFT light
comes on may damage the transmission.
Shift only from FIRST (1) to FOURTH (4) when
the light comes on.
This light will come on when:
• The engine coolant temperature is higher than
169°F (76°C),
• the vehicle is going 15 to 19 mph
(24 to 31 km/h) and
• the vehicle 21 percent throttle or less.
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Drifting
Joined: Mar 2009
Posts: 1,285
Likes: 52
From: Salt Lake City, UT
C6 of Year Finalist (appearance mods) 2019
This is an issue that is relatively common with the T56 / TR6060, so I am told.
I am having an identical issue with my 2007 Z51 equipped C6. 2nd works just fine at low revs and even at high, steady revs but rapidly increasing revs (acceleration) will cause it to grind every single time.
I have changed my clutch fluid, flushed the transmission fluid, installed a CAGS eliminator, installed an MGW short throw shifter and installed a TICK adjustable clutch master cylinder and ALL have failed to solve the problem.
Therefore I have come to the conclusion that it must be a 2nd gear synchro. You may be having the same issue as I am. I'll be getting this fixed ASAP, and I'll let you know how hard I was banged for it.
I am having an identical issue with my 2007 Z51 equipped C6. 2nd works just fine at low revs and even at high, steady revs but rapidly increasing revs (acceleration) will cause it to grind every single time.
I have changed my clutch fluid, flushed the transmission fluid, installed a CAGS eliminator, installed an MGW short throw shifter and installed a TICK adjustable clutch master cylinder and ALL have failed to solve the problem.
Therefore I have come to the conclusion that it must be a 2nd gear synchro. You may be having the same issue as I am. I'll be getting this fixed ASAP, and I'll let you know how hard I was banged for it.
Intermediate
Joined: Mar 2014
Posts: 30
Likes: 1
From: Laveen, AZ
This is an issue that is relatively common with the T56 / TR6060, so I am told.
I am having an identical issue with my 2007 Z51 equipped C6. 2nd works just fine at low revs and even at high, steady revs but rapidly increasing revs (acceleration) will cause it to grind every single time.
I have changed my clutch fluid, flushed the transmission fluid, installed a CAGS eliminator, installed an MGW short throw shifter and installed a TICK adjustable clutch master cylinder and ALL have failed to solve the problem.
Therefore I have come to the conclusion that it must be a 2nd gear synchro. You may be having the same issue as I am. I'll be getting this fixed ASAP, and I'll let you know how hard I was banged for it.
I am having an identical issue with my 2007 Z51 equipped C6. 2nd works just fine at low revs and even at high, steady revs but rapidly increasing revs (acceleration) will cause it to grind every single time.
I have changed my clutch fluid, flushed the transmission fluid, installed a CAGS eliminator, installed an MGW short throw shifter and installed a TICK adjustable clutch master cylinder and ALL have failed to solve the problem.
Therefore I have come to the conclusion that it must be a 2nd gear synchro. You may be having the same issue as I am. I'll be getting this fixed ASAP, and I'll let you know how hard I was banged for it.
Race Director
Joined: Dec 2013
Posts: 12,500
Likes: 3,625
Could be that the cage is still activating and blocking you out of second.
http://xse.com/leres/z06/cags.html
Could be that the clutch is not fully disengaging due to dirty clutch fluid.
Or could be enough sling shot forced shifts into second gear that the second gear syncro needs to be replaced, since it so worn out slots to tabs that the two gears trying to lock together on the second gear shift are going point to point/over rotate to block out the shift isntead.
http://xse.com/leres/z06/cags.html
Could be that the clutch is not fully disengaging due to dirty clutch fluid.
Or could be enough sling shot forced shifts into second gear that the second gear syncro needs to be replaced, since it so worn out slots to tabs that the two gears trying to lock together on the second gear shift are going point to point/over rotate to block out the shift isntead.
Last edited by Dano523; Aug 30, 2018 at 11:31 PM.
Team Owner
Joined: May 2004
Posts: 82,175
Likes: 1,319
From: McKinney TX
St. Jude Donor '21-'22-'23-'24
OP's last post on this problem:
12/26/11 : " The problem with my 1st to 2nd shift will be solved by installing a skip shift eliminator. My local dealer was very helpful and explaining why the problem exists."
7 year old thread bumped for no good reason. The solution is in the owner's manual and has been posted here several dozen times.
OP's more recent posts are in the C3 forum.
12/26/11 : " The problem with my 1st to 2nd shift will be solved by installing a skip shift eliminator. My local dealer was very helpful and explaining why the problem exists."
7 year old thread bumped for no good reason. The solution is in the owner's manual and has been posted here several dozen times.
OP's more recent posts are in the C3 forum.
Last edited by Vette_DD; Aug 30, 2018 at 11:46 PM.
Pro
Joined: Mar 2018
Posts: 660
Likes: 63
From: Fresno CA
OP's last post on this problem:
12/26/11 : " The problem with my 1st to 2nd shift will be solved by installing a skip shift eliminator. My local dealer was very helpful and explaining why the problem exists."
7 year old thread bumped for no good reason. The solution is in the owner's manual and has been posted here several dozen times.
OP's more recent posts are in the C3 forum.
12/26/11 : " The problem with my 1st to 2nd shift will be solved by installing a skip shift eliminator. My local dealer was very helpful and explaining why the problem exists."
7 year old thread bumped for no good reason. The solution is in the owner's manual and has been posted here several dozen times.
OP's more recent posts are in the C3 forum.
Intermediate
Joined: Mar 2014
Posts: 30
Likes: 1
From: Laveen, AZ
I was well aware that this was an old post I had done a search for this problem and ran across this one. The person who posted never responded if the syncro repair did the job. I admit I am a noob but know enough to look at the date, I thought fellow Vette owners would be courteous enough to respond. Some do and for those I am very grateful.
Pro
Joined: Mar 2018
Posts: 660
Likes: 63
From: Fresno CA
I was well aware that this was an old post I had done a search for this problem and ran across this one. The person who posted never responded if the syncro repair did the job. I admit I am a noob but know enough to look at the date, I thought fellow Vette owners would be courteous enough to respond. Some do and for those I am very grateful.
Burning Brakes
Joined: Aug 2018
Posts: 1,085
Likes: 395
From: ARKANSAS
I agree. If you are newer to this forum it is fair to bring up old threads. If the bobble heads that insult you for asking for help just ignore them People with real answers will respond. And for you old crabby members that think they know everything just help the new C6 owners. They are not the enemy. Being rude seems nonproductive.