Last week I started driving in track mode and a few time I got this warning. It says something like performance shifting active. This happened twice when I turned into my neighborhood and once on another 90 degree turn. I tend to take corners fast and don't know if that has anything to do with it. I turn off of a highway where I slow from about 63 mph brake slightly to turn into neighborhood maybe down to 40ish mph then let off the gas down to about 35 mph. The warning came up after the turn was complete. Obviously the car is already louder to drive in track mode but when this warning comes on it sounds like something is wrong -like it's reving. To get it to stop making that sound I have to put it into anything but track or sport mode.

Is this some type of performance feature that someone would use if driving it on a track? I always drive in automatic and was also wondering if this was putting the car into a manual type mode.

 

It's explained well in the Owner's Manual.

 

thanks

 

Sorry, just seems lazy to me to ask a question here expecting someone else to look up something that's in the Owner's Manual in every car.

From the Owner's Manual:

Transmission Shift Mode − Paddle
Shift Automatic
. Adjusts to either a smoother or
firmer shift.

. Sport – Performance Algorithm
Liftfoot (PAL) recognizes
aggressive throttle maneuvers
and holds lower gears for
greater engine braking and
enhanced vehicle control when
not using paddles. (Available in
Sport or Track mode.)

. Track – Performance Algorithm
Shift (PAS) recognizes
aggressive cornering, heavy
braking, and high acceleration to
select and hold lower gears
when not using paddles.

There are 5 or 6 threads here that discuss it as well, which are easily found with the forum's Advanced Search function.

 

I did find this in the owner's manual. Can anyone translate? I'm a physical therapist that he no experience with engines or things that mechanics would know. My husband made a guess about what's happening but this is my car and the Corvette engine does things that his truck does not.

Thanks

 

I tried to search the site before posting and I couldn't find anything - probably because the DIC warning doesn't say performance algorithm active. The owner's manual also doesn't make it easy to find and it definitely doesn't explain what's going on.

 

Yeah, the manual doesn't explain it very well. Here's a link to a thread here about it: https://www.corvetteforum.com/forums...ft-active.html

 

The advice look in the manual would be a lot easier to take if the manual wasn't filled with DOT/NHTSA nonsense.

 

When PAS is active it holds the lower gear both to provide engine braking when off throttle and better acceleration when on throttle since it will already be in the correct gear for rapid acceleration out of a turn. Under these conditions it does automatically what you would normally do when driving with a manual transmission for best performance.

PAS has been around on GM vehicles for quite awhile and was originally called PAL (performance algorithm lift foot) and can be a little unnerving the first time it is engaged since the transmission may appear to be stuck in a low gear. The first time it happened in my 2008 Cadillac CTS I was accelerating hard through a curving on-ramp after the minivan in front of me decided to pull off in the middle of the merge ramp. The engine RPM at 80 MPH was unusually high for a few seconds until PAS went away. I experienced it in my 2014 ATS yesterday while doing an evasive maneuver to avoid getting crunched in an I-74 construction zone. I was in a group of vehicles in a single lane construction zone and the lead car and a car coming off the merge ramp both made a panic stop and I knew the motor home behind me wouldn't stop in time so I slid into the coned but still intact lane under construction and accelerated away from the accident, the cars that were in line ahead of me stayed and got crunched. After I let off the accelerator to slow down and get back in the normal lane the transmission stayed in lower gear for a few seconds until it decided the fun was over. I am glad I wasn't in my 3/4 ton GMC crew cab pickup because a near 4 ton vehicle couldn't have made that fast side maneuver to get out of harm's way.

 

I'm so glad you didn't get into an accident and thanks for your explanation. My 2008 Vette did some maneuvers to keep me out of a couple accidents too. Luckily the new one has not been tested in that way yet.

 

An accident would have been a lousy ending to a great trip. I took our daughter (age 11) to Mammoth Cave for a couple of tours and Monday afternoon we toured the Bowling Green Assembly plant which was a great tour. Anna was selected from our group to start a car coming off the line and that is something she won't soon forget We took a cross country route to the TN mountains and made an unplanned stop in little Pall Mall TN after seeing the signs for Sgt. Alvin C. York's home and store; that part of TN and KY has some very fun and scenic roads and the York historic site is a nice stop. After that we spent 3 days in the rainy but still nice Townsend TN area of the Great Smoky mountains and then made it back in time for to take my wife out for our anniversary dinner on the 3rd.

Anna wasn't shaken by the near accident and quickly quipped she saw her life go flashing by however she was referring to the wrapped in plastic 1946 issue of Life magazine she bought while we were in a nearby antique mall waiting for our plant tour time; it flew from the back seat and went diagonally across the car into her front seat area.

 

 

Have you considered doing the Fellows driving school at Spring Mountain? You will learn a lot about how the car works and how to drive it.

 

It's also repeated sometimes on the same page!

 

I did a GM Owner Panel Survey on this last week ...

How to best visually inform the driver of the specific systems affected by each driving mode, with some text related to the major changes.

 

So you are saying this is normal? I had this happen to me recenetly were i started accellerating to race someone and then it felt like it wasnt even moving and it was stuck in gear. Then i saw that appear in the screen. How does this get activated if i wasnt really makeing a hard turn? Is this normal it felt nasty and not normal at all. It felt like the car was broken or something was wrong with the transmission and didnt allow it to run

 

In simple terms; your corvette will automatically go into race mode if it thinks its racing and will go back to normal mode after a few seconds of regular driving. Yes, this is normal 8)

 

I call it puppy mode. It thinks you're really going to play with the throttle and it holds the RPMs up a little higher and holds the lower gear a little longer to allow you to get a good benefit of torque to help you "play". If you really just hit it a little and are not in the "playing" mode, it drops out of PAS and goes back to normal throttle and gear selection.

Quite normal.

Elmer