Question for M7 owners about synchro problems
Team Owner
Joined: Jul 2006
Posts: 97,155
Likes: 1,471
From: Calgary, AB. There's a reason why white was the only color offered on every year Corvette. Proud Canadian German Jamaican!
St. Jude Donor '09, '12-'13-'14-'15-'16-'17
mine doesn't shift like a Miata, sometimes it's a bit clunky hot or cold but I think it's more of a matter of shifting at the right RPM's. 
Instructor
Joined: Dec 2013
Posts: 143
Likes: 0
From: Atlanta Ga
I only have 12x miles on mine... But I love the m7. It feels great with no noticeable syncro chatter. Coming from the 5 speed in my evo with a full steel shifter cage and short shifter the only thing I have to get used to is the extra gears... That will take a bit of time before its natural lol. I do plan on picking up the mgw unit in the near future. I like the rifle bolt feel... And as an avid precision rifle shooter I want the good blueprinted action feel!
Le Mans Master
Joined: Feb 2002
Posts: 5,394
Likes: 281
From: cumming ga
Well I have cold shift problems few times will not go in first jumped out of first couple times think it's not going all the way in cold. Up and downshift to second is hard cold, seems to be getting better I use the heel toe paddles to help witH down shifting.
2015 z51 2400 miles 30 vetts and counting 25 manuals so it's not my not knowing how trade 2012 Z06 with Amsoil torque thrust auto trans fluid for my 15.
z51vett
Doug
2015 z51 2400 miles 30 vetts and counting 25 manuals so it's not my not knowing how trade 2012 Z06 with Amsoil torque thrust auto trans fluid for my 15.
z51vett
Doug
5th Gear
Joined: Oct 2014
Posts: 5
Likes: 0
From: Brookfield Ct
I'm at just under 800 miles and have the same cold notchy shifting. What is bugging me is I started about 2 weeks ago to see a random problem getting it to even shift to 2nd from 1st. Only does it when warm too... And not all the time. Just normal driving too (not hot rodding it). I can shift fine several times In a row iand then the next time it will not want to go into 2nd at all.
Anyone else experience this?
Anyone else experience this?
Safety Car
Joined: Sep 2000
Posts: 3,604
Likes: 396
From: Austin, TX
I've been experiencing this issue since new. When cold it exhibits the crunch, when warm no problem. A definite crunch shifting 1-2, 2-3, car had 3200 miles and it's not getting better, dealer has had the car for a week trying to decide if it's normal or not. GM techs can't even agree! I'm frustrated just looking for a definitive answer. GM is replacing a servo tomorrow. See what happens.
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Drifting
Joined: Sep 2013
Posts: 1,906
Likes: 51
From: Tampa Florida
Pro
Joined: Sep 2013
Posts: 648
Likes: 2
From: Gulf Breeze Fl
2400 miles and 14 months old. 1-2 shifts are stiff until warm. No problems except when using "rev matching" during decelling it will sometimes over rev engine. Not even close to redline but much more than needed.
Will not have an auto. It's drive or be driven.
Will not have an auto. It's drive or be driven.