My 2006 pontiac g6 seems to have a bit of a shimmy when i go over 80 kph, it also seems to be worse on corners, i checked the tire pressure and it was good and the tires tread are good as well, any idea on what it could be? please and thank you

You pull the cover off of the fuse block, And on back of the cover it should list what fuses are where. i have attached your owners manual and some diagrams of the fuse box
http://www.vadengmpp.com/owners-manual/pontiac/2006-Pontiac-G6.pdf 2006 pontiac g6 fuse diagram Google Search

Dunlop signature series
Sticky tire nice grip almost 0 squeal and smooth and not to mention they look great with very strong side walls
there are about $80 apiece

bad bearing or axle shaft possible

There are many reasons for the light to come on example: tire pressure not same in all tires, tires of diffrent size, ABS sensor wire loose or cracked. The best thing is to retrive the code which will tell you exactely what and which VSS vehicle speed sensor is failing.

It's possible that your Front/Rear alignment is way out of whack. Have the car undergo a full front/rear allignment (~$80 USD) or your rear tires are below spec.

The tire pressure sensors are part of the valve stem, one in each tire. Please check the tire pressure in each tire also the spare. If all are correct then you will have to diagnose the system with a scanner at a GM dealer or a name brand tire store.

could be a deformed tyre ,really need to drive it to see whats causing it

sounds like your front end is worn out and yes tie rod ends are a common source of this problem along with out of balance tires and seperated tire cords, any tire store will inspect your car for free and give you an estimate to repair.

if the car shakes more the faster you go then your tires need to get balanced

It is possible that one of your new tires has what is called a slipped belt which is basically a faulty tire.

If they were able to successfully perform the front end alignment you can almost be sure that all of your ball joints, tie rod ends etc are ok as these really don't attribute to "shimmying" felt in the steering wheel.

The are several common causes of shaking felt in the steering wheel:
1. Out of balance wheel/tire combo
2. Slipped belt in a tire
3. Bent wheel

Your shop should be able to pinpoint the cause easily.

Take your car back to the shop that replaced your tires and tell them what you are experiencing. They can check your new tires again to make sure the belt on them did not slip.