I have a vibration in the gas pedal all the time. This is the only place i can feel it. Car rides smooth. If im cruising and driving normal it has a buzzing , vibrating feel in the pedal. When i let of the gas and coasting out of gear the feeling is still there. The only other thing i noticed is at high speeds when i'm accelerating the car seems to shake a little. Anyone have a clue what this is.

 

Do you have mounts or springs?

 

Are you coming up with a code? Mine is doing the same thing...coming up with p0300 and been to the dealership 7 times and they can not figure it out.

 

p0300 is random cylinder misfire. try switching to NGK BRK7E's gapped at .38
It fixed the problem for me

 

ummmmm. i thought our cars were drive by wire, hence no mechanical connection to the throttle body so there should be no vibes. maybe im just dumb???

 

I know, you'd thing that would be the case. Thankfully I don't have this issue with my Cobalt, but my Trailblazer was throttle by wire and had the vibrating gas pedal. It would literally make your foot fall asleep on long highway runs. All I could figure is it had to do with how the pedal support is tied into the body.

 

I know what the code is and I have changed out my plugs twice...but no go. And a misfire would make the car jump and feel vibrations and there are multiple things that can cause a misfire not just plugs.

 

No i'm not getting a code. I feel its feedback through the floor but the other pedals are not vibrating. This is very strange and aggrivating

 

mine does the same thing, i haven't got a clue what it is. i also hear what i can only describe as a soft grinding sound every now and then. it only lasts a few seconds but it has me wondering. i tried to describe it to my step-father but he said he wouldn't know until he drove it and witnessed everything for himself, which has yet to happen.

 

my pedal vibrates like hell... but I've got solid mounts...

 

my does it, since new, very annoying, sometimes if I mess with the tire pressure it will help. I also test drove an LT and it did the same thing