A6 clunks when shifting into 1st - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

nachocheese · 02-12-2010, 07:24 PM

Okay, I posted this in the transmission section, but no luck. I've noticed that my car seems to do a really hard shift into 1st gear when slowing down in tapshift mode. It only does it in M (not S or D). It seems to shift into 1st, then I feel a clunk just as the car is coming to a stop. Any thoughts?

CamaroBAMF28 · 02-12-2010, 08:34 PM

i mean.... my M6 does that.... im pretty sure its kinda normal for a chevy gearbox to do that but idk you said your car is auto so im not sure =/ sorry dude

GangGreen · 02-13-2010, 08:41 AM

Mine does the exact same thing!!!

Blade · 02-13-2010, 08:55 AM

I think it depends on what speed you are shifting down to 1st gear. In my TSX, if I drop down to first at speed higher than 25 mph, it does a hard drop. The TSX is a 5 speed Auto.

When I test drove the 1LT, I noticed the same thing, it seems like the speed threshold is 10-15 mph on the 1LT. If this is happening at 10-15 mph in your car, then my point is moot, otherwise you may be downshifting too soon.

nachocheese · 02-13-2010, 11:59 AM

Quote:

Originally Posted by Blade

I think it depends on what speed you are shifting down to 1st gear. In my TSX, if I drop down to first at speed higher than 25 mph, it does a hard drop. The TSX is a 5 speed Auto.

When I test drove the 1LT, I noticed the same thing, it seems like the speed threshold is 10-15 mph on the 1LT. If this is happening at 10-15 mph in your car, then my point is moot, otherwise you may be downshifting too soon.

Actually, it doesn't do it when I downshift myself. It only seems to happen when the car does it for you.

GangGreen · 02-13-2010, 12:35 PM

"Actually, it doesn't do it when I downshift myself. It only seems to happen when the car does it for you."

same here

SlingShot · 02-13-2010, 12:40 PM

No problems here, you may want to give the dealer a call ...

Blade · 02-13-2010, 02:40 PM

Quote:

Originally Posted by nachocheese

Actually, it doesn't do it when I downshift myself. It only seems to happen when the car does it for you.

Damn that's frikkin weird dude. Time for the shop.

nachocheese · 02-13-2010, 05:11 PM

Yeah, I know. I've been putting off getting it checked out. It's such a pain being without a car. Guess I need a spare!

nachocheese · 02-23-2010, 07:21 PM

Okay, I took it in. The guy from the shop drove it around with me. He says that it is normal due to the manual mode being programmed for hard shifts like an auto with a shift kit on it. Not sure I believe him since not everybody seems to have this sound. I don't think they know much about the car yet, so they are BS'ing until they get up to speed.

StlRomAniaN · 02-23-2010, 07:26 PM

It's fine. You're probably just downshifting at too high of a speed, which is easy to do considering redline is ~37 mph.

1962MarkVI · 02-23-2010, 10:07 PM

I took mine in for a check on this as well. It is only noticable in TAPShift mode and downshift from 2-1 when the car is slowing. It is relative to several items: how fast decelerating, engine rpms, speed at which downshift occurs, etc. It doesn't always happen, however when it does, you KNOW it!

The problem lies in the transmission's programming, according to the tech that I consulted with (20+ years exp.). Downshifting 2-1 point is not identical to the upshift 1-2 point, and is much more noticable as a result than say the 3-2 downshift. The tech said this is normal, albeit harsh. It would have been nice if the 2-1 downshift was just omitted. Perhaps collective bargaining (complain about this!!) will push GM to get an updated transmission tune for us. As far as I know, it only affects V6 A6 vehicles.

King Sun · 02-23-2010, 10:16 PM

that same thing happens in my moms 2006 grand prix and it happens in my camaro sometimes also

SLVRPHX · 02-25-2010, 10:08 PM

I've noticed this as well, but I haven't worried about it much since I normally run S.

02-12-2010, 07:24 PM	#1
nachocheese Drives: 1LT RS, SIM Join Date: Aug 2009 Location: Columbia, SC Posts: 288	A6 clunks when shifting into 1st Okay, I posted this in the transmission section, but no luck. I've noticed that my car seems to do a really hard shift into 1st gear when slowing down in tapshift mode. It only does it in M (not S or D). It seems to shift into 1st, then I feel a clunk just as the car is coming to a stop. Any thoughts?

02-12-2010, 08:34 PM	#2
CamaroBAMF28 Drives: Black 2LT RS Join Date: Jun 2009 Location: Edison Posts: 232	i mean.... my M6 does that.... im pretty sure its kinda normal for a chevy gearbox to do that but idk you said your car is auto so im not sure =/ sorry dude __________________ "Respect the car for the name not the engine."

02-13-2010, 08:41 AM	#3
GangGreen Drives: Victory Red LT RS Born:3/3/09 Join Date: Sep 2009 Location: VEGA$ BABY Posts: 136	Mine does the exact same thing!!! __________________ Mods: SLP Loudmouth 1, Gen 5 Racing Stage 2 CIA. Soon: Headers, Custom Tune, FI.

02-13-2010, 08:55 AM	#4
Blade Drives: 2016 Camaro 2SS BVM Join Date: Dec 2009 Location: Charlotte Posts: 4,689 View My Garage	I think it depends on what speed you are shifting down to 1st gear. In my TSX, if I drop down to first at speed higher than 25 mph, it does a hard drop. The TSX is a 5 speed Auto. When I test drove the 1LT, I noticed the same thing, it seems like the speed threshold is 10-15 mph on the 1LT. If this is happening at 10-15 mph in your car, then my point is moot, otherwise you may be downshifting too soon. __________________ Formerly owner of: 2012 2SS/RS Build Thread - Totaled by red light runner 2010 LT/RS Build Thread - Traded in for 2012 2SS 2007 Acura TSX 1992 Oldsmobile Achieva V6 1992 Mercury Sable

02-13-2010, 12:35 PM	#6
GangGreen Drives: Victory Red LT RS Born:3/3/09 Join Date: Sep 2009 Location: VEGA$ BABY Posts: 136	"Actually, it doesn't do it when I downshift myself. It only seems to happen when the car does it for you." same here __________________ Mods: SLP Loudmouth 1, Gen 5 Racing Stage 2 CIA. Soon: Headers, Custom Tune, FI.

02-13-2010, 12:40 PM	#7
SlingShot Drives: 2012 ZL1 - #670 Join Date: Jun 2009 Location: Seminole, Fl. Posts: 8,009	No problems here, you may want to give the dealer a call ... __________________

02-13-2010, 05:11 PM	#9
nachocheese Drives: 1LT RS, SIM Join Date: Aug 2009 Location: Columbia, SC Posts: 288	Yeah, I know. I've been putting off getting it checked out. It's such a pain being without a car. Guess I need a spare!

02-23-2010, 07:21 PM	#10
nachocheese Drives: 1LT RS, SIM Join Date: Aug 2009 Location: Columbia, SC Posts: 288	Okay, I took it in. The guy from the shop drove it around with me. He says that it is normal due to the manual mode being programmed for hard shifts like an auto with a shift kit on it. Not sure I believe him since not everybody seems to have this sound. I don't think they know much about the car yet, so they are BS'ing until they get up to speed.

02-23-2010, 07:26 PM	#11
StlRomAniaN Drives: IOM 2010 Camaro 2SS/RS Join Date: Mar 2009 Location: St. Louis Posts: 1,782 View My Garage	It's fine. You're probably just downshifting at too high of a speed, which is easy to do considering redline is ~37 mph. __________________

02-23-2010, 10:07 PM	#12
1962MarkVI Drives: 2010 SIM Camaro 2LT/RS Join Date: Jun 2009 Location: Indianapolis, IN Posts: 31	I took mine in for a check on this as well. It is only noticable in TAPShift mode and downshift from 2-1 when the car is slowing. It is relative to several items: how fast decelerating, engine rpms, speed at which downshift occurs, etc. It doesn't always happen, however when it does, you KNOW it! The problem lies in the transmission's programming, according to the tech that I consulted with (20+ years exp.). Downshifting 2-1 point is not identical to the upshift 1-2 point, and is much more noticable as a result than say the 3-2 downshift. The tech said this is normal, albeit harsh. It would have been nice if the 2-1 downshift was just omitted. Perhaps collective bargaining (complain about this!!) will push GM to get an updated transmission tune for us. As far as I know, it only affects V6 A6 vehicles.

02-23-2010, 10:16 PM	#13
King Sun Casual Camaro Owner Drives: 2010 Black LS V6 Join Date: Jan 2010 Location: Jacksonville Fl Posts: 1,090	that same thing happens in my moms 2006 grand prix and it happens in my camaro sometimes also

02-25-2010, 10:08 PM	#14
SLVRPHX SoCal C5 Family Member Drives: 2010 Camaro Join Date: May 2009 Location: San Diego Posts: 145 View My Garage	I've noticed this as well, but I haven't worried about it much since I normally run S. __________________ 1LT RS Auto SIM Gray C&C BA, JBA Axle Back 1100: 5/8/09 \| 3000: 5/27/09 \| TPW: 7/13/09 3800: 7/22/09 VIN 126623 4200: 7/24/09 \| 6000: 8/6/09

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
L99, A6 (1st gear discussion?)	SGOS252382	V8 and V6 Transmissions / Driveline (6L80 / 6L50 / TR6060 / AY6)	31	07-26-2015 10:56 AM
CLOSED - Driver Signup for the 1st Annual Official Camaro5Fest (April 16-18, 2010)	GTAHVIT	2010 Camaro5 Fest (I)	923	03-19-2010 11:56 PM
shifting problem 1st to 2nd	tiggerss	Canada	8	11-01-2009 01:42 AM
Clarification Please! L99 and 1st gear	Ace	5th Gen Camaro SS LS LT General Discussions	6	05-22-2009 03:34 AM
Bankruptcy deadline...June 1st... TPW....June 1st :(	deejayflyy	Camaro Price \| Ordering \| Tracking \| Dealers Discussions	26	05-17-2009 07:31 PM