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Old 08-13-2012, 05:54 PM   #1
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Transmission Shaking To/From 1st Gear

Hi all,

About ~250 km ago, I had the 12B37 update applied. I noticed right away that the transmission was working much better than before: Smooth shifting, lower noise, etc.

However, just today, during some traffic on an uphill slope, the engine started to shake rather violently. Once the road flattened out, it sort of smoothed-out again; the car now just slightly rumbles whenever shifting to/from 1st gear.

Any feedback? I'm not sure if I should wait it out and hope for this to pass within the next few hundred km, or take it back to the dealership (which would be a big inconvenience to me). I just find it rather odd that it was working properly right after the update.

Thanks.


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Old 08-13-2012, 05:57 PM   #2
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What RPM range was this happening at?

Try giving it more throttle down low in the rpm range and see if it goes away.
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Old 08-13-2012, 06:04 PM   #3
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Quote:
Originally Posted by Joeywhat View Post
What RPM range was this happening at?

Try giving it more throttle down low in the rpm range and see if it goes away.
Not too sure, around 1k - 2k I'm guessing. Regardless, I think, it shouldn't rumble at all considering it was working brilliantly before today.
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Old 08-13-2012, 06:58 PM   #4
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Originally Posted by BPEW584 View Post
Not too sure, around 1k - 2k I'm guessing. Regardless, I think, it shouldn't rumble at all considering it was working brilliantly before today.
Are you stop and go uphill a lot? That might have something to do with it. Going to be more difficult for the car to move forward when constantly going uphill, especially at slow speeds.

I'd give a few more days of normal driving before drawing any conclusions, and of course if it persists, bring it to your dealership.
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Old 08-13-2012, 07:11 PM   #5
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Same thing with mine from new. Shudder from launch when hot developed around 300 miles. Did the 5 full throttle starts, drove aggressively, gradually went away a few hundred miles later. You probably have to drive like a first-thousand-mile break in, agressive accelerations, upshift and downshift frequently, put it through its paces (again...)
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Old 08-13-2012, 08:20 PM   #6
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Originally Posted by kam327 View Post
Same thing with mine from new. Shudder from launch when hot developed around 300 miles. Did the 5 full throttle starts, drove aggressively, gradually went away a few hundred miles later. You probably have to drive like a first-thousand-mile break in, agressive accelerations, upshift and downshift frequently, put it through its paces (again...)
Thanks. I will certainly try.

It doesn't matter that it was just working fine though?
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Old 08-15-2012, 09:56 AM   #7
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Quote:
Originally Posted by kam327 View Post
Same thing with mine from new. Shudder from launch when hot developed around 300 miles. Did the 5 full throttle starts, drove aggressively, gradually went away a few hundred miles later. You probably have to drive like a first-thousand-mile break in, agressive accelerations, upshift and downshift frequently, put it through its paces (again...)
Having the same problem after the update. Shuddering from stop until 2nd gear. It is extremely annoying. Ill have to try the battery pull then do all the steps again.
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Old 08-14-2012, 09:21 PM   #8
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I'm seriously considering the battery reset method... This is getting supremely annoying to drive.
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Old 08-15-2012, 08:40 AM   #9
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Originally Posted by BPEW584 View Post
I'm seriously considering the battery reset method... This is getting supremely annoying to drive.
Probably can't hurt to try but it won't help a clutch surface issue, if that is indeed the issue. How many miles on the car? Does the issue only happen after driving for a while, i.e. after the tranny gets hot?
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Old 08-15-2012, 09:13 AM   #10
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Quote:
Originally Posted by BPEW584 View Post
...About ~250 km ago, I had the 12B37 update applied. I noticed right away that the transmission was working much better than before: Smooth shifting, lower noise, etc.

However, just today, during some traffic on an uphill slope, the engine started to shake rather violently. Once the road flattened out, it sort of smoothed-out again; the car now just slightly rumbles whenever shifting to/from 1st gear.

...I'm not sure if I should wait it out and hope for this to pass within the next few hundred km, or take it back to the dealership (which would be a big inconvenience to me)...
Quote:
Originally Posted by BPEW584 View Post
I'm seriously considering the battery reset method... This is getting supremely annoying to drive.
We recommend breaking it in for around 1,600 km after the update. If it doesn't settle down at that time, please call our Canadian Customer Relationship Centre at +1 (1)-800-565-3673 for further assistance.

Quote:
Originally Posted by Joeywhat View Post
...Try giving it more throttle down low in the rpm range and see if it goes away.
Quote:
Originally Posted by feta_mgp View Post
...I'd give a few more days of normal driving before drawing any conclusions, and of course if it persists, bring it to your dealership.
Quote:
Originally Posted by kam327 View Post
...You probably have to drive like a first-thousand-mile break in, agressive accelerations, upshift and downshift frequently, put it through its paces (again...)
Hey guys -

Thanks for lending BPEW584 encouraging advice! We're all in this together.

Quote:
Originally Posted by kam327 View Post
...Welcome to transmission adaptive learning! Or improper clutch seating. One of the two!
Quote:
Originally Posted by unfocused1 View Post
"improper clutch seating" - is that the grinding noise people experience?
Ouch! When the car is in motion, a clutch is always engaged to one of the two primary gearsets. Both clutches are seated to provide control and transfer engine torque properly. Have you talked to the dealer about the adaptive learning process?

Thomas
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