Tremec Missed 1-2 shifts, Notchy

[Orange Krate]

Hi folks,
I just wanted to give you a little update on my 2011 LS3. The car now has 8900 miles on it. I installed a Skip Shift Eliminator to see if that might help. Indeed it did make the car seem easier to shift but there is still the notchy feeling and I am now having intermittent issues getting the car to go into reverse. The trans will go in reverse at times partially. It feels like it is in reverse and I hear the back up sensor beep in dash, I let out the clutch and GRIND! It isn't in gear and the stick pops out of whatever it is trying to slide into. It is so strange because the only thing I can compare it to is when the old manual adjustable shifting arms on my M22 Muncie were out of adjustment I would get the same sort of partial engagement and grind. My guess is that the clutch isn't fully released due to loss of pressure or failure to disengage the pressure plate. If it were a M22 I would know what to do. The trans would be out and on the table getting all new goodies if the shifter adjustment rods didnt cure the problem. Will go back to the dealer and I am calling the Chevrolet Customer Service line.

[bcarkle]

Originally Posted by Orange Krate

I've read that it is a Tremec 6060 MG9 such as seen here:

http://knudtsenchevyblog.com/tremec-tr-6060-mg9/

I guess we won't really know until the roll off the assembly line.

This is funny I seen this post, This dealership is right down the road from me. Awesome.

[TJeezey]

Originally Posted by Orange Krate

Hi folks,
I just wanted to give you a little update on my 2011 LS3. The car now has 8900 miles on it. I installed a Skip Shift Eliminator to see if that might help. Indeed it did make the car seem easier to shift but there is still the notchy feeling and I am now having intermittent issues getting the car to go into reverse. The trans will go in reverse at times partially. It feels like it is in reverse and I hear the back up sensor beep in dash, I let out the clutch and GRIND! It isn't in gear and the stick pops out of whatever it is trying to slide into. It is so strange because the only thing I can compare it to is when the old manual adjustable shifting arms on my M22 Muncie were out of adjustment I would get the same sort of partial engagement and grind. My guess is that the clutch isn't fully released due to loss of pressure or failure to disengage the pressure plate. If it were a M22 I would know what to do. The trans would be out and on the table getting all new goodies if the shifter adjustment rods didnt cure the problem. Will go back to the dealer and I am calling the Chevrolet Customer Service line.

You may have installed the skip shit eliminator into the reverse lock out. It is a common mistake (I know from experence. haha). The correct spot should be slightly above (and maybe towards the rear) the reverse lock out spot (more harder to reach) if I remember correctly.

[elegalR1der]

Here's a copy of the parts on order

[elegalR1der]

Looking back on Rick's post, looks like they ordered the new carbon blocking ring, so it seems like there may be a tsb out

[Orange Krate]

Originally Posted by TJeezey

You may have installed the skip shit eliminator into the reverse lock out. It is a common mistake (I know from experence. haha). The correct spot should be slightly above (and maybe towards the rear) the reverse lock out spot (more harder to reach) if I remember correctly.

Actually you can see the install on my "The Birth of Orange Krate" journal. It is in the right spot. I had the problem with reverse both before and after the install. The shifting is better with the SSE installed but...big but... it is still grinding, it has the inherent notch as many have indicated in this thread, and it is regularly irregular which makes it hard for any shop to diagnose or duplicate. I drive a stick all day long! It is not me. As for the SSE, my install photos and DIY instructions for the SSE are now being incorporated into the product's factory instructions! They liked it that much.

[calbert1999]

Originally Posted by Orange Krate

Actually you can see the install on my "The Birth of Orange Krate" journal. It is in the right spot. I had the problem with reverse both before and after the install. The shifting is better with the SSE installed but...big but... it is still grinding, it has the inherent notch as many have indicated in this thread, and it is regularly irregular which makes it hard for any shop to diagnose or duplicate. I drive a stick all day long! It is not me. As for the SSE, my install photos and DIY instructions for the SSE are now being incorporated into the product's factory instructions! They liked it that much.

[TJeezey]

Originally Posted by Orange Krate

Actually you can see the install on my "The Birth of Orange Krate" journal. It is in the right spot. I had the problem with reverse both before and after the install. The shifting is better with the SSE installed but...big but... it is still grinding, it has the inherent notch as many have indicated in this thread, and it is regularly irregular which makes it hard for any shop to diagnose or duplicate. I drive a stick all day long! It is not me. As for the SSE, my install photos and DIY instructions for the SSE are now being incorporated into the product's factory instructions! They liked it that much.

My bad! That was a common symptom of a wrong SSE install so I might have thought that was the problem. Grats on the instructions!

[Dr. Krabz]

Hey guys, not sure if this is still an active post but I would like some advice if anyone wishes to give it. I bought my 2011 Camaro in November and it spent a good bit of time in the garage so I just started to notice the issues discussed in this thread recently. It has been to two different dealers for a transmission related problem in the past, with a documented case on file with Chevrolet customer service. The original issue I was having related to an ungodly "shuttering" noise that the trans would make when it was under any kind of load in 1st gear and the clutch was pushed to the floor (such as slow speed parking lot maneuvering). Both dealers claimed this was a normal condition, but I find that hard to believe.

Now my car is starting to make noise when completing a 1st to 2nd gear shift, almost like the ones seen in these videos but not as severe. Keeping in mind that my car has less than 3000 miles on it, I think it is safe to say that the problem will only get worse. I am about to take this car back to the dealer soon to try and remedy this situation, I am not looking forward to the constant bickering that I assume will follow with them trying to tell me this is a normal condition once again.
Does anyone have any specific tips on how to handle this? I have been driving a manual transmission car all my life with no problems so I know this is not a normal condition or a case of operator error.


Thanks in advance!

[mstanford.us]

5 qts of Redline D4 ATF really helped my M6 shift more smoothly. Especially noticeable at the strip. Amazon.com has it. My cold 1-2 shifts are greatly improved as well.

[RogerBzSS]

Just had my 2011 SS M6 in for the Mass yearly inspection I also reported the 1st - 2nd grind with my trans, took the tech for ride and replicated the 1st to 2nd gear grind
so it's now documented with my dealer, he's following up with GM to see what can be done.. Car 100% stock.

waiting on a call back.. we will see

[Dr. Krabz]

I think this is a bigger problem than GM may realize. Anyone who is having this problem should come forward and say something to their dealer. If enough of us are having these issues, GM will be forced to do something.

[Stealth6]

Originally Posted by Dr. Krabz

I think this is a bigger problem than GM may realize. Anyone who is having this problem should come forward and say something to their dealer. If enough of us are having these issues, GM will be forced to do something.

Something like this could force them to issue a massive Campaign..... It would not look good for them as far as negative publicity and $$$. And that is probably why they're in "denial".

[Dr. Krabz]

Originally Posted by Stealth6

Something like this could force them to issue a massive Campaign..... It would not look good for them as far as negative publicity and $$$. And that is probably why they're in "denial".

I agree but I know that if they keep giving me the run around about it being a "normal condition" I am going to begin the process of seeking lemon law protection. I am tired of making constant trips to the dealer only to have them say it is normal, like it is my fault somehow. They can try and play hardball (and lose) or they can man up and fix the issue. I highly doubt a Corvette owner would be pushed aside like this and told over and over that it is normal.

[Stealth6]

Originally Posted by Dr. Krabz

I agree but I know that if they keep giving me the run around about it being a "normal condition" I am going to begin the process of seeking lemon law protection. I am tired of making constant trips to the dealer only to have them say it is normal, like it is my fault somehow. They can try and play hardball (and lose) or they can man up and fix the issue. I highly doubt a Corvette owner would be pushed aside like this and told over and over that it is normal.

Doc, I couldn't agree with you more...

[RogerBzSS]

Just got a call from my SM from my Dealer, they are looking to replace transmission part #'s and have them on order.

19259991
19256242
19256241

Roger

[RogerBzSS]

As thought I wondering if the Zl1 will have this same issue. ??

[Stealth6]

Originally Posted by RogerBzSS

Just got a call from my SM from my Dealer, they are looking to replace transmission part #'s and have them on order.

19259991
19256242
19256241

Roger

Looks like the Rings and Synchronizers.

Roger, any chance of a PM as far as which dealership is taking care of this for you....

Thanks.

[MiSTER]

Originally Posted by Dr. Krabz

I agree but I know that if they keep giving me the run around about it being a "normal condition" I am going to begin the process of seeking lemon law protection. I am tired of making constant trips to the dealer only to have them say it is normal, like it is my fault somehow. They can try and play hardball (and lose) or they can man up and fix the issue. I highly doubt a Corvette owner would be pushed aside like this and told over and over that it is normal.

2 trips to 2 different dealers and I get the same response. The 1st tech it was a could not reproduce. 2nd tech at the 2nd dealer sees me standing on the clutch pedal and notices the extra effort to shift at RPMs above 4k and the grind. But because Chevy says it's not an issue, the dealer can't do anything for me. To top it off, I get a call from customer service telling me sorry but it is what it is and can't control how I drive my car. Yeah that call got my blood boiling...

[partymn]

Sounds bad, but its comforting knowing that everyone is getting the same response from the dealers and GM Customer Service as I am.

[Dr. Krabz]

Well I just got done with the dealer, they told me that there is nothing that can be done until my problems get worse. Their fear is breaking down the transmission and not being able to find anything to bring back to GM, thus not getting paid back for their time and effort. The only assurance they could offer was reminding me that it has a 100k mile powertrain warranty and they will replace the transmission if need be. Call me a conspiracy theorist, but I think GM corporate is really behind this pushing on the dealers to cover it up. I think this will be a long fight and may result in legal action.

[partymn]

Set the parking brake, traction control on, and dump the clutch, while in second gear, at 3500 RPM. Something will brake, Guaranteed.

[Jer4251]

Well with just over 9000 miles on my 2010 SS m6, I really ran into this problem yesterday. 3 good runs in the 1/4 mile and the next 4 times blocked me out of 2nd and made me feel like an idiot. The last time I was at the dealer they said my cold air intake and headers were going to void my warranty in the future.

[Orange Krate]

I can assure you GM/Chevrolet is very aware of this issue. I received a private email stating as much.

Some of you may be too young to recall but back in the early 90's Ford Light Truck division had a problem with their newly released E4OD 4 speed autos. This replaced the old reliable C6 3 speed auto. It was specifically in diesels and 460 gassers. It got so bad that new transmissions were failing driving off the lot. I had a fleet and lost 6 of them in short order.

Ford started a huge campaign and just swapped them out 1 for 1. The transmissions were shipped in plastic banjo cases. Our local dealer had a RACK of them and it was a small dealer! This is what will happen if GM doesn't get their arms around this because history repeats itself!

As for a fix? Swap them out with the ZL1 trans setup and problem is solved.

[Dr. Krabz]

The only way i see this getting fixed is if we are all vocal about it. We need to be in contact with gm customer service and not stop until the issue is resolved.