I checked from gm.ca with 1SB package, 4 way is standard, 6 way is optional. What is the actual power seats you got?

Another question is what is your GT's average gas mileage?

I am fairly certain that the 1sb package is the 'Premium' package which means it would have the leather 6 way power seats.

Here are the options it lists that the 1sb will have over the base GT:

Premium Package Leather Seating Surface
Driver & Passenger Heated Seats
Leather-Wrapped Shift Knob
6-Way Power Driver Seat Adjuster
6-Way Power Passenger Seat Adjuster

Rear Centre Armrest

Front Seatback Map Pocket w/Netting
This option features:

Heated front driver and passenger seat cushions (http://javascript<b></b>:showFB('LEB0204');)
Heated front driver and passenger seatbacks (http://javascript<b></b>:showFB('LEB0404');)
Power driver seat fore/aft adjustment (http://javascript<b></b>:showFB('LEC0803');)
Power passenger seat fore/aft adjustment (http://javascript<b></b>:showFB('LED0803');)
Leather seat upholstery (http://javascript<b></b>:showFB('LGA0106');)
Leatherette door trim (http://javascript<b></b>:showFB('LGB0104');)
Leather gear shift knob (http://javascript<b></b>:showFB('LGE0302');)
Leather rear seat upholstery (http://javascript<b></b>:showFB('LGF0107');)
Leatherette rear seatback upholstery (http://javascript<b></b>:showFB('LGF0207');)
My car averaged 18mpg stock when I was being very gentle with it. After my tune I am now averaging 20pmg being very gentle with it. This is with mixed highway/city driving.

-Q

For the package, Quake nailed it.

Just to reiterate though, the 6 way power seats does NOT include backrest adjustment.

Average mileage, 12-16l/100km in mixed. I live just outside Toronto and spend all my city driving in that mess. 9.5-10l/100km all highway, depends on how you cruise.

Of course, at first your numbers will be much higher, it's hard to stay out of the throttle for a while.:wink2: