[Z06] 2008 Z06 may be a flaw in some tranny's
09-20-2008, 10:43 AM
#1
Cruising
Thread Starter
Member Since: May 2008
Posts: 13
Likes: 0
Received 0 Likes
on
0 Posts
2008 Z06 may be a flaw in some tranny's
GM is playing hardball with a potential flaw with the tremac T6060 MM6 transmission. To make a long story short my new Z purchased in May 2008 had that so called cold grind shifting into second. Brought car to dealer and had syncro's and 2nd gear replaced. Machanic saw what he called an unusual metal burn where the syncro's seat. 400 miles later same grinding problem especially with shifts at +3500 rps. Tranny taken apart again, same exact problem same exact metal burn. I demanded a new tranny. Dealer recommeded the ball go to GM's court because of what they believed was a potential flaw. This dealer is not the dealer I purchased this vehicle from. GM wanted it fixed again before they would even concider a new tranny. New syncros and gear was sent to dealer. Took 3 week to get. Dealer said parts were out of stock and GM was getting a new vender. Part came in two days ago and were rusted in the package upon delivery. Dealer said he would not put those parts in the tranny, they were flawed. I am still waiting for new parts. Between both repair attempts the car has been apart sitting in the shop over 5 weeks. My many complaints to GM have been a waste of time. The warantee complaint center is handled in Argentina and they do nothing but try to blow smoke up you *** while they sheild GM of any direct contact. I believe that there is a milling problem with the syncros or the gear they seat on and GM may being trying to delay any potential recalls of the T6060. A lemon law attorney has taken on this case even though this has not yet been the third repair attempt to qualify at no cost to me. Car only has 2,000 miles. Those of you 08 Z owners who have 2nd gear grind problems who have been told it is because the tranny needs to be warmed up may have the same flaw my Z has. GM CUSTOMER SERVICE is horrible. 
Last edited by bmastroman; 09-21-2008 at 10:11 AM.
09-20-2008, 11:08 AM
#2
Burning Brakes
Member Since: Nov 2004
Location: VA
Posts: 924
Likes: 0
Received 0 Likes
on
0 Posts
Sorry to here about your issues with the "T6060". I have a 08Z and have no grinding or issues with the tranny. I hope this is not a production flaw with the T6060. Some seem to have this issue, and some not. 
09-20-2008, 11:23 AM
#4
GM is playing hardball with a potential flaw with the tremac T6040 MM6 transmission. To make a long story short my new Z purchased in May 2008 had that so called cold grind shifting into second. Brought car to dealer and had syncro's and 2nd gear replaced. Machanic saw what he called an unusual metal burn where the syncro's seat. 400 miles later same grinding problem especially with shifts at +3500 rps. Tranny taken apart again, same exact problem same exact metal burn. I demanded a new tranny. Dealer recommeded the ball go to GM's court because of what they believed was a potential flaw. This dealer is not the dealer I purchased this vehicle from. GM wanted it fixed again before they would even concider a new tranny. New syncros and gear was sent to dealer. Took 3 week to get. Dealer said parts were out of stock and GM was getting a new vender. Part came in two days ago and were rusted in the package upon delivery. Dealer said he would not put those parts in the tranny, they were flawed. I am still waiting for new parts. Between both repair attempts the car has been apart sitting in the shop over 5 weeks. My many complaints to GM have been a waste of time. The warantee complaint center is handled in Argentina and they do nothing but try to blow smoke up you *** whilemthey sheild GM of any direct contact. I believe that there is a milling problem with the syncros or the gear they seat on and GM may being trying to delay any potential recalls of the T6040. A lemon law attorney has taken on this case even though this has not yet been the third repair attempt to qualify at no cost to me. Call only has 2,000 miles. Those of you 08 Z owners who have 2nd gear grind problems who have been told it is because the tranny needs to be warmed up may have the same flaw my Z has. GM CUSTOMER SERVICE is horrible.
This is another '08 with a transmission problem. 3000 miles 4 months old.
http://forums.corvetteforum.com/show....php?t=2136663
Last edited by '06 Quicksilver Z06; 09-20-2008 at 11:27 AM.
09-20-2008, 12:16 PM
#5
Melting Slicks
I called it what it is early on (POS) and got flamed. I do not try speed shifts anymore because of missing shifts from 1st to 2nd. Oh yea, I know, the transmission does not miss shifts the driver does. Give me a break "Air Heads"
09-20-2008, 12:47 PM
#7
Safety Car
I've got an 08 that grinds going into 2nd gear at any rpm and any temp.Built 12 07,2100 miles and it has done it scince day 1.Just been waiting for a tsb so I don't have to go thru all the run arounds.
09-20-2008, 12:54 PM
#9
People with the base '08 C6s have described similar problems with the TR6060 as well.
09-20-2008, 01:04 PM
#10
Procharged F1X 7.18 @ 197
Member Since: Feb 2002
Location: Staten Island NY
Posts: 2,321
Likes: 0
Received 2 Likes
on
2 Posts
St. Jude Donor '09-'10-'11
.
Last edited by joe11204; 09-20-2008 at 01:07 PM.
09-20-2008, 02:38 PM
#13
Melting Slicks
I have an 08 that I can red line in the first 4 gears and have never had a problem what so ever, so it's not all of them.
Keep us informed as to the final fix.
Keep us informed as to the final fix.
09-20-2008, 08:40 PM
#18
Melting Slicks
Member Since: Jul 2006
Location: Kansas
Posts: 2,032
Likes: 0
Received 0 Likes
on
0 Posts
I have an 08' with 2,500 miles on the clock. I have yet to experience ANY tranny issues and she is driven hard. I do know however of 2 other 08' Z owners in the area that have 08's and ALL 3 of them have been in for some sort of synchro/clutch/tranny problem - all of them have 4,000 miles or less...yikes.
09-20-2008, 11:09 PM
#19
Le Mans Master
