Auto Tran HARD Downshift When Braking - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

SchwarzerDrache · 10-22-2010, 09:33 AM

I did a quick search and didn't find anything. I was driving in "S" yesterday and was braking as I came up to a stop sign. The car downshifted HARD as if I was getting ready to poweslide through the turn. It did it again at the next stop and the felt like it actually shifted down then back up then back down again. The RPMS were jumping up to 5 or 6k. It hasn't done it since.

Is this a glitch in the computer or did I do something to make the car think I was racing?

jtzako · 10-22-2010, 09:40 AM

I havent had it do anything quite that drastic. However, I have had it, on occasion, downshift a bit sooner than usual. I've also had it not UP shift after taking a corner aggressively. In either case, I cant figure out if it is supposed to do that for some reason or if there is a bug in the system. (if I had to guess I'd say its related to stabilitrack/traction control)

rjsmith1973 · 10-22-2010, 02:43 PM

It depends on how hard you were accelerating before you slowed down for the sign. I can reproduce that effect consistently- the computer thinks you're going to jump back on the throttle and downshifts in advance to help.

MyIBMssRS · 10-22-2010, 11:16 PM

Quote:

Originally Posted by rjsmith1973

It depends on how hard you were accelerating before you slowed down for the sign. I can reproduce that effect consistently- the computer thinks you're going to jump back on the throttle and downshifts in advance to help.

Yep, that's part of the 'sport' in sport mode. Holds RPMs high where the most HP is found for aggressive driving. It sounds great if you have an aftermarket exhaust.

RCLapCar · 10-23-2010, 12:57 AM

Aggresive acceleration followed by braking will cause it do this for me. It's probably the computer thinking you are trying to take a corner quickly and down shifts hard to give you better exit acceleration quicker. My guess at least.

whamslam3 · 10-23-2010, 02:30 AM

can you drive it in sport mode all the time as soon as u get it or should you let it break in 1st or does it not matter?

Scott@Bjorn3D · 10-23-2010, 04:28 AM

Quote:

Originally Posted by MyIBMssRS

Yep, that's part of the 'sport' in sport mode. Holds RPMs high where the most HP is found for aggressive driving. It sounds great if you have an aftermarket exhaust.

2010 Bumblebee · 10-23-2010, 12:19 PM

It say's in the manual that the car will downshift during braking. Maybe if you are in sport mode and braking really hard it's going to match you by down shifting really hard. How hard were you braking ?

jtzako · 10-23-2010, 12:24 PM

Mine sometimes does this after having sat at a stop.. Basically if I accelerate quickly as I turn a left (or sometimes right) turn it stays in a lower gear and doesnt upshift.

In my case it doesnt seem to have anything to do with braking.

RCLapCar · 10-25-2010, 07:48 AM

Acceleration shifting also depends on how hard you step on it. If you floor it, it will basically reach the redline before each shift (like in a drag race).

10-22-2010, 09:33 AM	#1
SchwarzerDrache No, it is not an SS Drives: SIM 2LT/RS Join Date: Jun 2010 Location: Maryland Posts: 491	Auto Tran HARD Downshift When Braking I did a quick search and didn't find anything. I was driving in "S" yesterday and was braking as I came up to a stop sign. The car downshifted HARD as if I was getting ready to poweslide through the turn. It did it again at the next stop and the felt like it actually shifted down then back up then back down again. The RPMS were jumping up to 5 or 6k. It hasn't done it since. Is this a glitch in the computer or did I do something to make the car think I was racing?

10-22-2010, 09:40 AM	#2
jtzako Drives: 2010 IBM Camaro SS Join Date: Jun 2007 Location: DFW, Tx Posts: 1,157	I havent had it do anything quite that drastic. However, I have had it, on occasion, downshift a bit sooner than usual. I've also had it not UP shift after taking a corner aggressively. In either case, I cant figure out if it is supposed to do that for some reason or if there is a bug in the system. (if I had to guess I'd say its related to stabilitrack/traction control) __________________ 2010 Camaro SS Imperial Blue \| CAI Inc, CAI \| Solo Hi Flow Cats \| X-Pipe \| Backup Camera \| PDIM

10-23-2010, 12:57 AM	#5
RCLapCar Drives: 2016 2SS A8 HB/JB Join Date: Sep 2009 Location: Toronto, Ontario Posts: 505	Aggresive acceleration followed by braking will cause it do this for me. It's probably the computer thinking you are trying to take a corner quickly and down shifts hard to give you better exit acceleration quicker. My guess at least. __________________ Current: 2016 2SS Hyper Blue/Jet Black Former: 2010 2LT/RS IOM/IO - Solo Catback w/ J-Pipes

10-23-2010, 02:30 AM	#6
whamslam3 Camaro King [^^^] Drives: Apollo 11 Camaro IOM Join Date: Dec 2009 Location: CA Posts: 1,754	can you drive it in sport mode all the time as soon as u get it or should you let it break in 1st or does it not matter? __________________

10-23-2010, 12:19 PM	#8
2010 Bumblebee Drives: Transformers Edition Camaro 2SS/RS Join Date: Jan 2010 Location: Mass Posts: 1,048 View My Garage	It say's in the manual that the car will downshift during braking. Maybe if you are in sport mode and braking really hard it's going to match you by down shifting really hard. How hard were you braking ? __________________ The Yellow Camaro Club http://www.camaro5.com/forums/group.php?groupid=128 Northern Massachusetts & Southern New Hampshire Camaro Club http://www.camaro5.com/forums/group.php?groupid=127 The mother of all supercharger questions thread http://www.camaro5.com/forums/showthread.php?t=77958 My 2010 Camaro Review http://www.camaro5.com/forums/showthread.php?p=2025442#post2025442 2010 Transformer Edition Camaro L99 Auto

10-22-2010, 02:43 PM	#3
rjsmith1973 Drives: Aqua Blue 2SS/RS Join Date: Aug 2009 Location: Saratoga Springs, UT Posts: 119	It depends on how hard you were accelerating before you slowed down for the sign. I can reproduce that effect consistently- the computer thinks you're going to jump back on the throttle and downshifts in advance to help.

10-23-2010, 12:24 PM	#9
jtzako Drives: 2010 IBM Camaro SS Join Date: Jun 2007 Location: DFW, Tx Posts: 1,157	Mine sometimes does this after having sat at a stop.. Basically if I accelerate quickly as I turn a left (or sometimes right) turn it stays in a lower gear and doesnt upshift. In my case it doesnt seem to have anything to do with braking. __________________ 2010 Camaro SS Imperial Blue \| CAI Inc, CAI \| Solo Hi Flow Cats \| X-Pipe \| Backup Camera \| PDIM

10-25-2010, 07:48 AM	#10
RCLapCar Drives: 2016 2SS A8 HB/JB Join Date: Sep 2009 Location: Toronto, Ontario Posts: 505	Acceleration shifting also depends on how hard you step on it. If you floor it, it will basically reach the redline before each shift (like in a drag race). __________________ Current: 2016 2SS Hyper Blue/Jet Black Former: 2010 2LT/RS IOM/IO - Solo Catback w/ J-Pipes

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
2006 TRAVERSE CITY AUTO CONFERENCE	KILLER74Z28	Off-topic Discussions	2	09-18-2010 09:45 AM
Production Camaro at which autoshow	dcamaro	5th Gen Camaro SS LS LT General Discussions	31	02-02-2008 11:38 AM
Iacocca rips auto industry, warns: Don't sell Chrysler	KILLER74Z28	General Automotive + Other Cars Discussion	6	04-13-2007 11:38 PM