Manual trans owners--both 4 and 5

[My1stCadillac]

I'm currently in a fight with GM to get this fixed for mine. Brought it to 3 dealerships. 1 even had the nerve to tell me to learn how to drive a manual transmission. Those of you who had this issue, can you please send a report to the NHTSA?

https://www.nhtsa.gov/report-a-safety-problem#/

I first test drove a 2022 but didn't buy it because it had option packages that were not of interest to me at the time.

I ended up buying a 2022 at a later date that had problems I blamed on myself when it was actually a faulty car. I should have walked away but my excitement got the better of me and I purchased the car. I think that car was damaged by the shipper because back then GM had trouble hiring shippers and they hired any moron to ship. I think the dealer knew the car had issues and let me take it anyway. The issue was the car would get stuck in 2nd gear.

I ended up having the transmission replaced under warranty. The replacement transmission made odd whining noises because I think the technician messed up the install. I took the car to another dealer and had a second replacement transmission, which turned out fine, but I got rid of the car because of the carfax issues and I no longer trusted it. It was an ordeal, but GM made me whole on the deal with the help of my lawyer.
I traded the 2022 for a 2024 4BW Manual, which I have had no issues with. During this process I went to Spring Mountain twice and drove their manual cars on track. I drove 3 separate manuals when I was there.

At the end of the day, I have driven 8 different manual transmission 4BW cars when you add up the test drives, replacement transmissions, etc.

They are all notchy going into 2nd gear either on the downshift or upshift. It gets better at full operating temperature but never fully goes away. If you own one of these cars, you need to accept the notchy transmission and appreciate the car for what it is. I have gotten to enjoy the mechanical feel of the transmission from the direct linkage.

I used to have an S2000 and recently drove a friend's new Integra Type S. The Type S was a great shifting car, but the shifter inputs are so light that it gives the impression that it is weak and could break. I know it wouldn't break because Hondas are built well but I walked away appreciating the mechanical feel of the BW even more.

I hope these insights help and I wish you the best with your car.

 

[DesertRJ]

Question for all the M6 owners--anybody having issues? I've had my 4V for a few months now and after more than 30 yrs of manual cars, this is the worst shifter/tranny combo I've had. I love everything else about the car, but after hearing raves about how good the M6/shifter was on these cars, I'm really hoping mines broke and fixable and that this isn't inherent to the tr6060. Aside from the known 1-2 sticky shift issue common to the tremec(which should be unacceptable on a car like this...) my car can also be difficult to get into 1st or 2nd even when at a stop or with the engine off. Approximately 50% of the time, it shifts well--good positive engagement and one solid "thunk" into gear, but the other 50% of the time it is all over the place. Sometimes its a sorta 2 click/minor grind into gear, sometimes it refuses to go and I have to declutch/re-engage to get it into gear and sometimes it just takes way to much effort. Even with the car off, shifting back and forth between 1st and second is variable. Sometimes its a good solid, easy ,butter smooth chunk and sometimes its a high effort mess. I'm hoping that since I have issues even at rest that the shifter is not properly aligned and this will be an easy fix, but after reading all the issues owners of other brands(and prior gen V owners) have with the 6060 I'm worried I'm going to get the standard "we can't replicate it/it's normal" from the dealer So, anybody else having issues at this point? For reference, the car only has ~900 miles at this point, but the shifter has felt like crap since I drove it off the lot. Even before I started it up, I went through the gears and it just felt off.
Thanks
Scott

Mine was similar to this. They said no problems. Then it moved to rattling and pop outs. 14,000 miles and time for a new transmission!

 

[schernov]

I have not seen this TSB referenced before: https://static.nhtsa.gov/odi/tsbs/2023/MC-10244181-0001.pdf
But seems like a very definitive write on GM stating that certain date code transmissions are defective and should be replaced vs. repaired.

 

[Z28]

When GM replaces a transmission under warranty do they also replace the clutch?

 

[schernov]

No

 

[jbawden]

I have not seen this TSB referenced before: https://static.nhtsa.gov/odi/tsbs/2023/MC-10244181-0001.pdf
But seems like a very definitive write on GM stating that certain date code transmissions are defective and should be replaced vs. repaired.

Maybe you are referring to the post above yours, but that TSB is specific to popping out of 3rd gear. I don't read it as a blanket indictment on all transmissions, rather if you have this issue and it was made within the specified window, it should be replaced. I don't think I've read of 3rd gear pop outs, just rattles and notchy 2nd gear engagement.