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08 tranny issues

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Old Dec 14, 2007 | 01:38 PM
  #21  
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Originally Posted by robvuk
Remember that the engine being up to operating temperature doesn't necessarily mean the tranny is warmed up.

What temp is considered as Operating Temperature for the trans?
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Old Dec 14, 2007 | 01:47 PM
  #22  
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Originally Posted by AAONMS
What temp is considered as Operating Temperature for the trans?
I don't have a means to monitor it but my experience says that it only has to be above 80 or 90F to work without any issues. Even then, my 3-4 shift works just fine if I don't try to do it too fast.
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Old Dec 14, 2007 | 03:02 PM
  #23  
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Check with the service manager to see if they put synthetic transmission fluid in at the factory. My friend has a SSR with synthetic installed at the factory and had the same symptoms you mentioned. The dealer replaced the synthectic fluid with standard transmission fluid and poof the problems disappeared. If the factory put synthetic fluid in the transmission, discuss the option of swapping the synthetic with standard transmisson fluid with the service manager at your local dealer. Good Luck.
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Old Dec 14, 2007 | 08:45 PM
  #24  
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I have only had my 08 a couple weeks, but i noticed the cold tranny issue right away. Glad to hear I am not the only one.

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Old Dec 15, 2007 | 02:23 PM
  #25  
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Originally Posted by MarkRx
It wouldn't hurt to take it into the dealer and at least start a paper trail of the problem... have them throw it on the lift and inspect the fluid level. I've owned several cars where the tranny and diff fluid was low fresh off the lot.

robvuk has a good point. Your temp gauge tells you what the coolant is at, shortly after your oil temp comes up and it takes SEVERAL miles for the tranny temp to come up. I've personally monitored this on my 06 STI. I started with a cold engine and drove it down the highway on a 35 degree day. it took about 50 miles for the temp to stabilize. crazy huh? Just be patient in the cold (i know it's hard) and don't bend forks or blow syncros. (throw an old M22 rock crusher in there and be done with it)
wise statements re temperature of trans vs. other components on cold days.

I had my car out yesterday, about 54 degrees outside. I don't know what some are experiencing (my car has about 4500miles) but right from the start, it shifted smoothly from 1 to 2.

Granted, it was warmer outside than 40s or 30s, but the car has been sitting in an unheated, attached garage for about 2 weeks. And the ambient temps have been down in the high 30s and 40s.

And from what I've read and personally observed re the 3 to 4 shift, there's no way to actually push and guide the shift lever to this higher gear if you want to do it fast. The only way is to let the spring-loaded action do it (meaning, pushing up with your palm). Anything else, and it seems to grind if you're moving it as fast as you can.

As said, maybe there is an issue with some TR-6060s and it would be good to alert the dealer/company. Adding the "rock crusher" is not an option, but it's good tongue-in-cheek.
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Old Dec 15, 2007 | 02:56 PM
  #26  
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I have no trans issues with my new 08. Runs like a champ!!!
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Old Dec 15, 2007 | 03:21 PM
  #27  
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I think if you took a poll about 75% of the owners of an 08 6 speeds would admit to the same problem. It's a factory issue. I wish GM would recognize this and have a factory recall and do what is right. Mine does the same thing, notchy and hard to shift from 1st to
2nd when cold and after 15-20 minutes of driving it seems to shift better. It also shifts better at higher rpms. A state of the art car like the vette should not have this problem. My son's 95 chevy cavalier shifts smoother. I can live with the issue I guess but I shouldn't have to. None of us should.
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Old Dec 15, 2007 | 04:01 PM
  #28  
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Originally Posted by GTJim
I have no trans issues with my new 08. Runs like a champ!!!

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Old Dec 15, 2007 | 06:55 PM
  #29  
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On a medium run, say 50% throttle, shift at 3500 rpms or so when the engine is at ~ 165*, it will grind second gear every time. That is a syncro problem if I have ever seen one.

I have not had one apart to date, but we getting ready to put in a 06 M6 geared box and at that point, Ill tear the 6060 apart.

They should not have this problem. I work on these cars for a living and we have been working on T56s since they were offered in the LT1s back in 93. Of all the cars Ive owned, this is the first one ( Brand new too mind you!) that has had a gear grinding issue.
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Old Dec 15, 2007 | 07:02 PM
  #30  
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I've got 2100 miles on my '08 Z51 and no problems at all shifting to this point. Keep my fingers crossed I guess.
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Old Dec 17, 2007 | 08:52 AM
  #31  
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Originally Posted by C64YA
Check with the service manager to see if they put synthetic transmission fluid in at the factory. My friend has a SSR with synthetic installed at the factory and had the same symptoms you mentioned. The dealer replaced the synthectic fluid with standard transmission fluid and poof the problems disappeared. If the factory put synthetic fluid in the transmission, discuss the option of swapping the synthetic with standard transmisson fluid with the service manager at your local dealer. Good Luck.
There is a lot of discussion indicating that the shifting issue is related to the operating temperature of the transmission. This discussion is consistent with the possibilty of synthetic fluid in the transmission, because synthetic fluid has a higher viscosity than standard transmission fluid, which stands to reason that the transmission will take longer to reach operating temperature before shifting properly. My friend said that it took about 25 minutes for the SSR to shift properly with the synthetic transmission fluid versus shifting properly at start up with the standard fluid. Again, check with the dealer if your vette is shifting poor to determine if it has synthetic transmission fluid and can this synthetic fluid be swapped for standard fluid without damaging the transmission.
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Old Dec 17, 2007 | 10:59 AM
  #32  
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Originally Posted by Louis @ LG Motorsports
On a medium run, say 50% throttle, shift at 3500 rpms or so when the engine is at ~ 165*, it will grind second gear every time. That is a syncro problem if I have ever seen one.

I have not had one apart to date, but we getting ready to put in a 06 M6 geared box and at that point, Ill tear the 6060 apart.

They should not have this problem. I work on these cars for a living and we have been working on T56s since they were offered in the LT1s back in 93. Of all the cars Ive owned, this is the first one ( Brand new too mind you!) that has had a gear grinding issue.
That's pretty definitive! Would you start a new thread and tell us what you find when you do tear apart the T6060? Your opinion of whether it's a design or production issue would be informative.

Also, it sounds as if you've NOT had any issues with T56s in the past. That, too, is very interesting since some on CF have had problems, but not all.

Thanks for the info!
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Old Dec 17, 2007 | 08:58 PM
  #33  
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Originally Posted by AORoads
That's pretty definitive! Would you start a new thread and tell us what you find when you do tear apart the T6060? Your opinion of whether it's a design or production issue would be informative.

Also, it sounds as if you've NOT had any issues with T56s in the past. That, too, is very interesting since some on CF have had problems, but not all.

Thanks for the info!
I hope you share your findings with all of us.
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Old Dec 17, 2007 | 09:27 PM
  #34  
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Corvettes should just migrate to warm Southern California in the winter and then nobody will have problems anymore.
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Old Jan 22, 2008 | 07:31 PM
  #35  
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My car has 1-2 shifting issues really bad, like just grinds, when at least down in the 40's with the tranny cold.

I just start out in 2nd for 10mins or so and then it works great. Starting in 2nd to me feels more natural than 1-3, in my opinion.

I really wish my brand new car didn't do this crap. If I shifted as GM intended while cold the tranny wouldn't last long. Soooo....I'll just use my work-around I guess.

Last edited by SnowyATX; Jan 23, 2008 at 06:53 PM.
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Old Jan 22, 2008 | 09:45 PM
  #36  
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Update, After a few weeks the royal purple makes the cold sluggishess
a non issue. I also just turned 9k
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Old Jan 23, 2008 | 09:19 AM
  #37  
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Can someone post a link to the royal purple MTF and the amount I will need for the flush? I am getting tired of this issue and my third gear is starting to get a little touchy with this 28deg weather we keep freaking having down here in Ga.
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Old Jan 23, 2008 | 06:57 PM
  #38  
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Originally Posted by 1.8t
Can someone post a link to the royal purple MTF and the amount I will need for the flush? I am getting tired of this issue and my third gear is starting to get a little touchy with this 28deg weather we keep freaking having down here in Ga.
I'd like to know here as well. Pulling out of the garage at work today I tried a gentle (say 1200 RPM's or so) 1-2 and it wouldn't go into gear, like it grinded bad. I'm tempted to take it to the dealer but they'll just "F" something else up in the process.
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Old Jan 23, 2008 | 09:20 PM
  #39  
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its really bad as I compare it to VW R32 or Honda S2000, but when its 40+ degrees out, it is ok, I'm thinking about a short shifter.
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