2015 Impala transmission slipping - Page 2 - Chevy Impala Forums
9th Gen Drivetrain Transmissions, Clutches and Axles.

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post #16 of (permalink) Old 10-13-2016
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I have read that many people notice this transmission slip. My 2015 V6 does the samething and I don't have a tune. If I drive like an old man I won't see it, if I drive aggressively I may notice it but if I drive normally I see it all the time. I think it's how they programmed the transmission software. If not then it's an issue GM will ignore until it becomes a major issue and force a recall.

Let us know what the dealer discovers if anything.
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post #17 of (permalink) Old 10-13-2016
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Originally Posted by Angus576 View Post
I think it's how they programmed the transmission software. If not then it's an issue GM will ignore until it becomes a major issue and force a recall.

Let us know what the dealer discovers if anything.

Lets hope that's how the transmission is programmed. Although it sounds identical to the first symptoms I got when the 35r wave plate went in my wifes G6 with the 6 speed.
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post #18 of (permalink) Old 02-14-2017
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I have a 2017. picked up brand new with 20 miles on the odo. I have a 2-3 slippage on occasion when the trans is cold. And strangely like someone else posted, when I turn left. It briefly allows the engine to rev up about 200 rpm during the shift. the 2-3 and 3-2 shift is definitely ....screwy. Haven't taken it to the dealer yet because I cannot consistently reproduce it.

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post #19 of (permalink) Old 07-27-2018
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-and for whatever it is worth,,, our 2015 2LT, 3.6, etc, has always had an "odd feeling" 2 to 3rd gear shift since the day it was brand new. It occurs under light throttle, and to me it feels exactly like the second gear clutch is staying applied slightly too long after the third gear clutch applies. (it gives you a "delay" feeling, even to the point of feeling like the engine slightly loosed power during that 2-3 shift) Ours certainly doesn't feel anything like a "slipping" situation. I don't think it does this under hard acceleration, but I'll have to try that. It certainly does it with a cold engine/transmission, but I think not so much when everything is up to normal operating temps.

I agree that is probably a "programming" issue of some sort, especially since this transmission is totally computer controlled. -or I should say controlled by too many computer inputs? I really doubt it is any sort of mechanical issue,,,,

Has anyone got any more answers yet??

Thanks.
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post #20 of (permalink) Old 07-28-2018
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-and for whatever it is worth,,, our 2015 2LT, 3.6, etc, has always had an "odd feeling" 2 to 3rd gear shift since the day it was brand new. It occurs under light throttle, and to me it feels exactly like the second gear clutch is staying applied slightly too long after the third gear clutch applies. (it gives you a "delay" feeling, even to the point of feeling like the engine slightly loosed power during that 2-3 shift) Ours certainly doesn't feel anything like a "slipping" situation. I don't think it does this under hard acceleration, but I'll have to try that. It certainly does it with a cold engine/transmission, but I think not so much when everything is up to normal operating temps.

I agree that is probably a "programming" issue of some sort, especially since this transmission is totally computer controlled. -or I should say controlled by too many computer inputs? I really doubt it is any sort of mechanical issue,,,,

Has anyone got any more answers yet??

Thanks.
No answers, but same problem with 2017, LT, 3.6

Bill
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post #21 of (permalink) Old 05-16-2019
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I'm glad it's not just me. I get it going from 1st to 2nd every so often. Higher speeds, I might have a little bit of hesitation, but it's the most noticeable 1st to 2nd. Temperature doesn't matter.

2018 Premier with 40,600 miles on it currently.

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post #22 of (permalink) Old 05-19-2019
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Originally Posted by salsaman06 View Post
I have a 2017. picked up brand new with 20 miles on the odo. I have a 2-3 slippage on occasion when the trans is cold. And strangely like someone else posted, when I turn left. It briefly allows the engine to rev up about 200 rpm during the shift. the 2-3 and 3-2 shift is definitely ....screwy. Haven't taken it to the dealer yet because I cannot consistently reproduce it.
My 2016 LTZ does the same thing and I also noticed it happens more if I am taking a left turn. Very strange and it has done it since day 1, dealer tells me it is normal so I just live with it. It doesn't do it all the time, very hard to recreate it.
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post #23 of (permalink) Old 05-19-2019
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Ok....with all this Trifecta talk, does [or can it?] using Trifecta tune out the speed limiter at 112 mph?
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post #24 of (permalink) Old 05-19-2019
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Ok....with all this Trifecta talk, does [or can it?] using Trifecta tune out the speed limiter at 112 mph?
I haven't tried to go that fast but I'm pretty sure it does. Best thing would be to ask Trifecta directly tho.

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post #25 of (permalink) Old 06-21-2019
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Thanks, I contacted Trifecta and yes it will re-calibrate rev limiter [speed limiter]. They will re set limiter to match tire speed rating. Mine are at 130.
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