Just curious if these cars normaly hesitate when taking off from a stop? I have a 2007 3.5LT. Im used to 3.8L in my grand prixs, and the impala seems to accelerate differently. it does not launch nearly as quickly and seems to lag in first gear. I figured maybe the impala is geared a little differently (or programmed different shift points) for older people (no offense, lol, but i think the grand prixs were sold as the sportier models) so as not to take off right from a start. maybe someone who owns a 7th gen with the 3.8 can chirp in with their input. i just think its weird that the 3.5 is supposed to have a few more HP but yet it seems slower to accelerate?
When you, "take off", be sure to have the flaps down and the wheels up! That could be a part of the problem!
All kidding aside, no vehicle should hesitate when accelerating. Something isn't right. Have a professional automotive technician diagnose it.
The Buick 3.8 V-6 was a fantastic engine. I personally think GM made a huge mistake in discontinuing that engine. It was probably too reliable and too easy to work on! The more dumb decisions like this that GM makes, that are contrary to what the consumer wants/needs, the more dissatisfied I am becoming with GM. My daily driver GM car has the oil pan gasket leaking and the part is only about $20. Easy, right? Wrong!
To replace the oil pan gasket, the engine has to be removed!
The dealer wants $1,200 to replace a $20 gasket!
Recently the Throttle Position Sensor and Mass Aiflow Sensor went bad and when I opened the hood to replace them, I discovered that they have special Torx-bit Security Pin heads on the bolts, so with the average set of tools you can't replace them!
It has become quite clear that GM doesn't want their customers working on their own vehicles and is trying to force us to go back to the dealer where we can get our wallets vacuumed empty!
I feel GM has lost sight of its past huge success, when they manufactured reliable, reasonably priced vehicles that with a little mechanical knowledge and a basic set of tools, the average consumer could repair. This is what made GM a great company making great cars. There's been a change at GM and it isn't for the better! It's no wonder they are having such huge problems staying in business. GM, wake up, before it's too late!