Join Date: Oct 2009
Location: Lake Co. Florida
take it to the dealer, and have them do a ride along with you, 9 out of 10 times if the dealer checks it, it is either
A - They don't bother with it, just drive it in back let it sit, then call you and say nothing happened out of the ordinary,
B - they do drive it, and nothing happens out of the ordinary because they don't drive like YOU DO
So, take it in, recreate everthing that is making it do it on the way there to see if you can make it happen, then when you get there, DO NOT shut the car off, just go in, ask for a tech to come sit in the pass seat, and you drive it like you drove it in... this way, no cycle has been broken in the ECM, and the engine is at proper operating temp, and YOU are the one recreating the issue not a tech with a heavy foot.
now it could be something else completely, and that the way you are applying the throttle is messing with your mind and making you think it should be going faster, than it really should be. My Dad's 04 GMC Sierra does this all the time... the throttle is so touchy that if I ease on it, I feel like it is bogging down then it takes off because there is a point at the beginning of the pedal travel where nothing is being told to the computer, then past that point the throttle starts to move. My brother's 08 G5 is the same way. (both are automatics)
So, it is either a jedi mind trick, or something is really wrong, either way, if you can create it at the dealer with a tech in the pass seat, then you are golden with getting it fixed right.