I have read the threads, and I have searched but I have a specific quetions. My car cannot shift into 1st at least 50% of the time. its an 05 out of warranty, any options?

 

Normal. It occurs when I slip it into neutral coming to a red light. Then when I need to go, it won't shift into 1st.

This procedure should be in your owners manual: Let out on the clutch, then push back in, and it should slip right into first. I have also tried shifting to 2nd then going into 1st. Works most of the time but not always.

 

Or if you are on an incline, let the car roll a few inches and it will slip in. Very common with the first gen transmission in 05 to 07 cars.

 

If you're interested, here's Talon90's explanation of the problem:

http://forums.corvetteforum.com/1564909095-post9.html

 

Sorry I guess I wasnt very clear, I know how to get it into first and everything, usually I just throw it in 2nd and then back in 1st. I am just wondering what my options are for actually getting it fixed.

 

If you read Talon's post I referred to he explains it is a "design glitch". If you want it fixed I guess you would have to replace the trans with a later model T6060. I am not aware that rebuilding the T56 will cure it but maybe it would. Do some research to find out if there are updated design gears for the T56.

 

I had mine replaced last month under warranty..mine's an 05 but had an extended warranty with it. So I guess I lucked out. Its better, but every now and then it still does it...

 

Everyone has a different style of driving but I would not recommend anyone coast to a stop in neutral. I feel this is an inherently dangerous practice.

To the OP...it may not be the 'fix' you're looking for but I suggest you downshift through the gears as you come to a stop. At a slow roll it should be relatively easy to go from second into first gear. As you're driving and when stopped, leave it in first gear. This should eliminate the problem 90% of the time.

When first starting out if the transmission balks going into first try bumping it into second gear first. If it just won't go into first gear let out the clutch and start rolling in second gear, then downshift into first. Try double-clutching if needed. Fresh transmission fluid may help. I use Royal Purple transmission fluid and I have virtually no problems shifting into first in my 2005 MN6.

Lastly, you may want to have the dealership check the transmission. It could be something as simple as a linkage adjustment but it could something more involved with the synchronizer or the shift rails binding, etc. Good luck!

 

Yup . . . when coming to a stop I've always downshifted, maybe not through all of the gears, when the roll speed to a stop is 5-20 miles per hour.

 

There was a Service Bulletin on this condition back in '05.....titled "Intermittent Block Out of First Gear from a Stop" - document ID#1690618. Stated that condition occurring 5% of time is normal; greater than 5% should be repaired. Repair consists of "replacement of first speed gear with modified version with improved clutching teeth". I occasionally experience this problem in my '05, but the thought of having the dealer tear apart the tranny made me think that the cure would be worse than the malady. However, what you're experiencing sounds much worse. If you PM me a fax #, I'll send you what I have or you could try a search with that title. Not sure if repair under the Service Bulletin would still be covered at no cost.

 

That's for sure... I let the dealer tear mine apart because it was grinding when shifting into Reverse, and they gave it back to me with it grinding when shifting into 3rd and 4th...

http://www.youtube.com/watch?v=a6tMEmeBjkU

After a long long battle with GM (GM: Why did I have to fight you so hard to fix this probelm?), they finally fixed the problem..

 

I have been coasting to a stop for 15 years now without even the slightest problem.

 

Why shouldnt you coast in neutral?

 

Is my MN6 transmission fully covered under the 5 year powertrain warranty for my 2007 Vert?
It shifts like a lazy Model a Furd?

 

I'm curious why it would be dangerous? I know it is bad for an automati trans, but am curious why considered dangerous in a manual?

 

I feel lucky that I have not ever experienced this...not once. My car was one of the last '07s produced...maybe this has something to do with it...

 

There is a lockout solenoid that will not let you shift into first if you are going a certain speed. Maybe it is defective and doesn't want to disengage?

 

Yes it is covered. Call your local stealership and let them know.

 

(Not trying to hijack thread.)

It is a matter of opinion; being aware, alive and in touch with your car and driving pattern does not automatically (no pun) make it dangerous to shift into neutral while "coasting to a stop." For the uninitiated, or uninvolved, however, being out of gear, even for a short period of time, could be dangerous in the event there is an emergency situation.

The modified way to "shift into neutral" while still having some control of the car would be to stay in gear (lever) but push in on the clutch. You could also grab the gear most closely associated with your speed.

As to downshifting thru all the gears until you get very close to a stop, that also is a matter of opinon and driving pattern. Your brakes are intended to stop the car. Your trans can aid in the process, especially if you know how to do it (downshift and slow the car while braking, letting off the gas, steering, being aware of traffic, etc.) But each time you downshift, you put wear on all parts of the drivetrain, and it's not absolutely necessary each and every time.

Just as you can skip gears shifting up for any number of reasons (mpg, less wear, less shifting, etc.), you can also skip gears coming down, use none if you're coming up to say, a stop sign.

As to OP's first gear problems, while I'd talk with the dealer re the trans issues, I might also call Tremec and ask them what they think.