I beleive this was mentioned in another thread.. however.. I have noticed that in hard acceleration in the shift from 2nd to 3rd the engine will rev high between gears without my foot on the gas.

Is anyone else having this occur? Is this normal?

I havent noticed that but did notice that shifting in to 5th gear feels weird unless you do it in just right spot almost like it doesnt wanna go in if you push over just to far

Yep, in my car when I shift during WOT, the rpms will actually jump ahead 250-500rpm. Without me having the foot on the gas. I guess its nice, it makes it less rpm loss between shifts.

I was wondering if I just never noticed this happening in my other cars...

I haven't noticed the jump in throttle like you guys have when shifting and I have tried to get my car to do that.

I have noticed that if your in cruise control if you step on the throttle a little the car lurches back and slows down a bit. I think in the past cruise was more of a mechanical function and when it was acticated the pedal was actual depressed while it was activated. In the SS/SC the pedal really doesn't depress under cruise. Since it doesn't actually depress I think when you lightly press on it no it acutally takes the input from the pedal over the cruise and cuts the throttle a bit.

If you depress the throttle a lot under cruise you take off. Just kina weird since I was used to giving a car a bit of extra throttle when cruise was on to pass people a bit quicker in the past.
I think it's all part of the throttle by wire not being just perfect or identical to an old style throttle cable system.

I have noticed once in a while it doesn't feel like it wants to go into 5th so I just pull it back out and put it into 5th and everything is fine, you don't want to jam the gears into place....And YES I have noticed the jump in rpms, the other day I was on a straight road to see what the car could do (a deceslet road) from being stopped then launched well when shifting from 2nd to 3rd (it was almost to the redline in 2nd) the rpms jumped to the 7000rpm range then went to about 4000rpms when I shifted....

I guess it's normal if it happens to you as well... Just strange in my opinion :)


I haven't had any problems with cruise control. I only messed with it once or twice though.

I'm going to make a few runs on a straight road here and see if there is a technique to not getting it to rev up high like that.

i have noticed this same thing with the rpms in my ss also but i think its more the gauge thats not accurate for example rev the gas on the car when your in neutral siting still rev it to like 4k rpm and when the rpms are coming down lets say to 2k rev it quickly again you will notice the needle goes down more after you hit the throttle and you hear the engine and exhaust respond the the pedal but the gauge doesnt respond as fast , then it catches up to where it supposed to be, seems like the gauge does not respond to sudden quick changes
try it

I just made a few runs back and forth with WOT and found that when I shifted I was still tapping the gas. I brought my foot off of the accelerator but I was still pressing it very slightly. The accelerator is extremely sensitive and that slight pressure on it must have caused the revs.

I made 2 more runs removing my foot completely off the gas and I noticed what I would consider normal shifting.

So for anyone who is experiencing this same problem try seeing if you are resting your foot on the gas while shifting.

My last car was a 97' Cavalier with a much less powerful engine, and much less sensitive accelerator. This car takes some getting used to!

Oooo...super sensitive gas. That's awesome. The car must be a beast for my standards.

Our cars have a throttle-by-wire system correct? Because I was looking at the throttle body and there seems to be that there is not a throttle cable just a mechanism that looks to be controling it...

On mine, I'm hoping the rpm gauge is off. I hit the rev limiter at only 6000. Wondering if the guage is just slow to respond and I'm actually at the 6500 red line but the needle is still catching up and only showing 6000.

Our cars have a throttle-by-wire system correct? Because I was looking at the throttle body and there seems to be that there is not a throttle cable just a mechanism that looks to be controling it...

Yep throttle by wire.

On mine, I'm hoping the rpm gauge is off. I hit the rev limiter at only 6000. Wondering if the guage is just slow to respond and I'm actually at the 6500 red line but the needle is still catching up and only showing 6000.

Yeah, all the Redlines are like this as well, they seem to have alot of LAG in the tachometer. Matter of fact, I dont even look at my tach anymore untill I get into 3rd gear.

Yep throttle by wire.



its called Throttle Actuated Control, and it gives the driver more precise control through PWM than through a cable that can stretch and also gives the PCM control over the engine speed during reduced engine power mode and when traction control is active

Yeah, all the Redlines are like this as well, they seem to have alot of LAG in the tachometer. Matter of fact, I dont even look at my tach anymore untill I get into 3rd gear.

You'd think GM would release a dealer reflash for the slow tach issues. Vehicles have had tachometers for 75 years, yet we still can't get them to be in sync with the engine??

Everythings electronically controlled, so I doubt it involves much more than setting the ECU to read the RPM at a faster rate than it does. Its fine for the base models, but with the aggressive 1st gear and the power of the SS, the tach just can't keep up.

You'd think GM would release a dealer reflash for the slow tach issues. Vehicles have had tachometers for 75 years, yet we still can't get them to be in sync with the engine??

Everythings electronically controlled, so I doubt it involves much more than setting the ECU to read the RPM at a faster rate than it does. Its fine for the base models, but with the aggressive 1st gear and the power of the SS, the tach just can't keep up.
Hopefully with the stage 1 reflash they will address this issue, that's just being optimistic though.