Sudden "kick" forward when car is switching from 1st to 2nd

ICEing · 07-09-2017, 04:37 PM

Been noticing this the past week. Often times from a stop, when accelerating the car will "kick" or lurch forward when switching from 1st to second it feels like. The feeling is like I got rear-ended by another car. This only happens at low speed.

I have the 16 SS Vert A8

Mark114 · 07-09-2017, 05:44 PM

I get that on mine from time to time but don't know what causes it.

grampa_ss · 07-09-2017, 06:45 PM

yep. that 1st 1-2 shift after sitting is weird. Many here experience it. It usually goes away after the 1st or 2nd stop. If you gas it a little harder, it won't do it.

CruzySS · 07-09-2017, 08:53 PM

Yea same here. It's just the performance shift in either sport or track mode. Put it in touring and it's less noticeable.

stook2001 · 07-26-2017, 04:25 PM

Yes, I have this also from time to time. Mine is in track mode and this seems to happen generally under light throttle. With a bit more throttle it smooths out. Strange. Bothers me a bit but not that much.

TonyNo · 07-26-2017, 06:29 PM

If this also happens when the car is not cold, then TSB #16-NA-019 may apply.

I just had it done and all is well. i got the number from the nice, Brand-Quality person that was at CamaroFest. I wish I got her name!

bigpunn03 · 07-27-2017, 11:34 PM

Quote:

Originally Posted by TonyNo

If this also happens when the car is not cold, then TSB #16-NA-019 may apply.

I just had it done and all is well. i got the number from the nice, Brand-Quality person that was at CamaroFest. I wish I got her name!

I'm happy to finally see this tsb but also sad because gm customer care and these damn service techs don't know sh##! Why does it take us the consumer to figure this stuff out

stook2001 · 07-28-2017, 11:14 AM

Quote:

Originally Posted by TonyNo

If this also happens when the car is not cold, then TSB #16-NA-019 may apply.

I just had it done and all is well. i got the number from the nice, Brand-Quality person that was at CamaroFest. I wish I got her name!

Interesting. What is done for this TSB? Is this something that can be done DIY?

whiskeyfed · 07-28-2017, 11:41 AM

I have had this issue too; I have the 2.0 A8. This also happens when rolling (5-10 mph) in 2nd gear. The car will give a few little lurches upon gentle acceleration and continue smoothly after. Maybe that TSB will fix that as well. In tour mode, it is the same for me as in Sport mode.

Unfortunately I have just learned to never downshift past 3rd gear and dealt with it. It may be time to get it fixed

Burly · 07-28-2017, 12:13 PM

I get this too on my A8 primarily when cold when manually shifting.

grampa_ss · 07-28-2017, 01:07 PM

Possible fix? check TSB 16-NA-019. I've attached the TSB

TedJS · 07-28-2017, 06:44 PM

Quote:

Originally Posted by grampa_ss

Possible fix? check TSB 16-NA-019. I've attached the TSB

Assuming other service procedures (TCM updates and fluid flush for TCC issues) have been done to fix issues on the 8-Speed this would be the final step after the transmission is properly filled with the new HP fluid depending on when the vehicle was built.

Fast learn adapts would be performed first by the technician but it is unlikely they would be able to drive the vehicle to learn the fill time on all the clutches as directed in the bulletin given variations in areas and driving conditions. The C4 clutch is most critical for 1-2 upshifts and you have to do 15 light throttle upshifts (at 15%) throttle to get it to learn properly. That's tricky to do...

07-09-2017, 06:45 PM	#3
grampa_ss Drives: 2016 Camaro 2SS Join Date: Apr 2017 Location: Stansbury Park, Utah Posts: 1,102	yep. that 1st 1-2 shift after sitting is weird. Many here experience it. It usually goes away after the 1st or 2nd stop. If you gas it a little harder, it won't do it. __________________ 2016 2SS, MRC, NPP, A8. Procharger P-1X,Stage II,std bypass, 3.9, Alky Meth - 10.84 @129 - DA+2000 New Mods - GPI drop ins, Kooks 2", LT4 fueling, Cam, Circle D Converter, 3.5 pulley & dual nozzle meth.

07-26-2017, 06:29 PM	#6
TonyNo Drives: 2016 2SS, SW Join Date: Oct 2009 Location: Chicago Suburbs Posts: 1,079	If this also happens when the car is not cold, then TSB #16-NA-019 may apply. I just had it done and all is well. i got the number from the nice, Brand-Quality person that was at CamaroFest. I wish I got her name! __________________

07-28-2017, 11:41 AM	#9
whiskeyfed Pat Drives: 2017 Camaro 1LT I4 Turbo A8 Join Date: Nov 2016 Location: Stratford, CT Posts: 827 View My Garage	I have had this issue too; I have the 2.0 A8. This also happens when rolling (5-10 mph) in 2nd gear. The car will give a few little lurches upon gentle acceleration and continue smoothly after. Maybe that TSB will fix that as well. In tour mode, it is the same for me as in Sport mode. Unfortunately I have just learned to never downshift past 3rd gear and dealt with it. It may be time to get it fixed __________________ Follow me on Instagram @whiskeyfed Subscribe on YouTube Whiskeyfed Camaro Follow my Build Thread The WhiskeyFed Camaro Current Modifications: JacFab Boost-O-Lator, Injen Evolution CAI, ZZP Catless Downpipe, RPM 3" Charge Pipe, Mishimoto Oil Filtration/Coolant Systems, R1 Concepts Brakes Package, Eibach Pro-Kit Lowering Springs, PTP Lava Exhaust Wrap & Turbo Blanket DYNO SHEET: 297whp / 374wtq Tuned by #danytechtuning

07-09-2017, 04:37 PM	#1
ICEing Hugh Mungus WOT?? Drives: 2016 Camaro 1SS Convertible Red Hot Join Date: Apr 2017 Location: NY Posts: 87	Sudden "kick" forward when car is switching from 1st to 2nd Been noticing this the past week. Often times from a stop, when accelerating the car will "kick" or lurch forward when switching from 1st to second it feels like. The feeling is like I got rear-ended by another car. This only happens at low speed. I have the 16 SS Vert A8

07-09-2017, 05:44 PM	#2
Mark114 Drives: 2016 2SS Convertible Join Date: May 2012 Location: St. Louis, MO Posts: 1,759 View My Garage	I get that on mine from time to time but don't know what causes it.

07-09-2017, 08:53 PM	#4
CruzySS Drives: 2016 Camaro 2ss Join Date: May 2017 Location: Annandale MN Posts: 588 View My Garage	Yea same here. It's just the performance shift in either sport or track mode. Put it in touring and it's less noticeable.

07-26-2017, 04:25 PM	#5
stook2001 Drives: 99 M3, 04 STi, 16 2SS Join Date: Oct 2016 Location: CT Posts: 190	Yes, I have this also from time to time. Mine is in track mode and this seems to happen generally under light throttle. With a bit more throttle it smooths out. Strange. Bothers me a bit but not that much.

07-28-2017, 12:13 PM	#10
Burly Drives: 2016 Camaro 2SS Join Date: Apr 2016 Location: Spotsylvania, VA Posts: 724 View My Garage	I get this too on my A8 primarily when cold when manually shifting.

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