Second gear grinding & remedy
- Thread starter gsxr1000
- Start date
ChrisJ
Active member
Now lets think about this.
100K 5 year powertrain warranty.
They put thinner fluid in, that will destroy the trans to save a fraction of a MPG, but possibly cost them millions in warranty repairs?
Maybe, but right now I doubt it. As others have said thicker fluid helps, but not much, or not at all as Stew said. So that theory is out the window in my opinion.
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mitdr774
also a dinner prick
A small fraction of the cars produced will have a manual transmission. Most of those drivers will drive the car for what it is. The end result will be very few warranty repairs for the number of vehicles sold. GM does a lot of stupid things to save a fraction of a penny or to gain a fraction of a MPG. Does the same transmission in Europe have the same issue? I have heard that it has no issue with grinding.
I have very little grind with my car after adjusting my cables (the dealer was way off) and with a thicker oil It will probably be completely gone.
I have very little grind with my car after adjusting my cables (the dealer was way off) and with a thicker oil It will probably be completely gone.
ChrisJ
Active member
I don't know. Do those in Europe drive the same? Have the same temperatures as us? Were the transmissions made identical? Were there changes made in 2012? Are there differences in the firmware used in the car or the flywheel\clutch arrangement?
Before you can make an assumption you need a lot more facts.
Is your 5 speed even remotely the same as our 6 speed?
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mitdr774
also a dinner prick
The 5 speed suffers the same shift grind as the 6 speed.
Once the clutch is released the flywheel and clutch set up has no affect on how the trans shifts. If you clutch is still engaged and applying any force to the input shaft you have other issues. The disk is not all that heavy compared to any other comperable clutch disk.
I have to assume that people in other places drive the same as we do. You will have those that drive hard, those that go easy, and everything in between.
Do you really need to ask about the climate??
Transmissions come out of the same plant. My guess is that they are identical as far as materials used to make them. The M32 has a wide variety of gearing options.
Once the clutch is released the flywheel and clutch set up has no affect on how the trans shifts. If you clutch is still engaged and applying any force to the input shaft you have other issues. The disk is not all that heavy compared to any other comperable clutch disk.
I have to assume that people in other places drive the same as we do. You will have those that drive hard, those that go easy, and everything in between.
Do you really need to ask about the climate??
Transmissions come out of the same plant. My guess is that they are identical as far as materials used to make them. The M32 has a wide variety of gearing options.
sx sonic
New member
Not sure on all the specifcs but the M32s over there have had more than a few bearing failures (center shaft I believe). There was talk of a revised case and possibly bearing to "solve" the issue, not sure when exactly it went into production/repair.
I also believe they're running a heavier weight oil but am not positive.
lambertsonic
Member
The only issue I have encountered with my 5 speed is a occasional grinding noise when shifting into reverse when fully stopped . I had the dealer look at it , but that did nothing . It occurs once or twice a week . I have not tried a different gear oil yet but and I doubt that it will solve my issue .
Chevrolet Customer Care
New member
viperaider,
If you would like us to assist you while at the dealership please let us know. You can always private message us your name, VIN, and the name of your GM dealership. Please be sure to keep us posted.
Erica Tiffany
Chevrolet Customer Care
ChrisJ
Active member
You need to either push the clutch in and wait 5-10 seconds before going into reverse OR stop, push clutch in and shift into a forward gear and then reverse. Doing this stops the input shaft from spinning. For example, push clutch in, immediately go into 2nd, then go into reverse without letting the clutch up.
What you're describing is 100% normal for a transmission that does not have a synchronized reverse and the 5spd does not.
IF it still grinds going into reverse even after you go into a forward gear (holding the clutch down the entire time) then your clutch is not disengaging completely and needs to be looked at.
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Chevrolet Customer Care
New member
Stew,
Sorry to hear that did not resolve your concern. Have you been to the dealership yet?
Erica Tiffany
Chevrolet Customer Care
Gsrdude
New member
So just hit 10k (never thought I'd put that on it in a year but find myself time after time grabbing the Sonic keys). Anyways, rotated tires, 4th oil change, and MT90 in the trans.
Never had a 1-2 grind "issue", shifting was a bit notchy 1-2 being the worst, it got better from new with the factory fill. But as I was nearing 10k notchiness returned
Have to say the MT-90 is better much better. 1-2 is better (not what a lil fwd should be IMO, think fwd ITR, GSR trans here), but 3-6 is butter compared to what it was yesterday.
We'll see what a couple thousand miles brings.
opcorn:
Never had a 1-2 grind "issue", shifting was a bit notchy 1-2 being the worst, it got better from new with the factory fill. But as I was nearing 10k notchiness returned
Have to say the MT-90 is better much better. 1-2 is better (not what a lil fwd should be IMO, think fwd ITR, GSR trans here), but 3-6 is butter compared to what it was yesterday.
We'll see what a couple thousand miles brings.
opcorn:Missionary
New member
My second gear is very rocky (please excuse my ignorance, I'm at work at the moment, no time to read through the thread) I thought at first it was just my manual driving skill since I haven't driven stick for 3yrs but I can get 3rd-6th smoother than an automatic quick shifting or slow shifting. 2nd only goes ok for me when I'm going like 8mph. Suggestions? Please pm or e-mail me jkight19@yahoo.com
Chevrolet Customer Care
New member
Hey Gsrdude,
Glad to see that you are still enjoying your Sonic! It is am awesome car. If you would like my assistance Missionary you can feel free to send me a private message and we will work to get your shifting issues resolved. I look forward to hearing from you.
Jackie
Chevrolet Customer Care
Glad to see that you are still enjoying your Sonic! It is am awesome car. If you would like my assistance Missionary you can feel free to send me a private message and we will work to get your shifting issues resolved. I look forward to hearing from you.
Jackie
Chevrolet Customer Care
mitdr774
also a dinner prick
Have to say the MT-90 is better much better. 1-2 is better (not what a lil fwd should be IMO, think fwd ITR, GSR trans here), but 3-6 is butter compared to what it was yesterday.
We'll see what a couple thousand miles brings.
Did the Integra have shift cables or solid shift linkages? GM likes to use cables for FWD transmissions. I have always found cables to be a little vauge compared to a direct connection.
Just wanted to note the difference to the cable adjustment in MY13. It doesn't have the little metal tab, which is replaced by including it in the plastic assembly. You pry out on it a bit and then push the button and the lockout comes up. Also under the hood you can't see the hole and it looks like there is an adjuster on the car now, with a position "in" and one "out."
Reverse lockout tab, already flipped 180 degrees:
Out:
In:
Reverse lockout tab, already flipped 180 degrees:
Out:
In:
mitdr774
also a dinner prick
Its Penzoil synchromesh. I have never had an issue with the Cavalier or truck having shift issues while using it, but they are not exactly known for shift grind like the M32 and F17 are. My transmission absolutely hated me when I took it to the drag strip. 1-2 and 2-3 were grinding almost every time after about 10 passes.
