Handling
With their comparable turning radii, the Ford Explorer Sport Trac and the GMC most certainly handle about the same into and out of tight spots.
Drivetrain
The GMC Sierra 1500 has a more sizeable engine than the Ford Explorer Sport Trac. Keep in mind that smaller engines are often cheaper to fix, but smaller engines can be stressed more.
Torque is the force that lets you accelerate quickly, and in this respect, the GMC Sierra 1500 is considerably more powerful than the Ford Explorer Sport Trac.
Torque equals pickup, and the GMC will have picked up and gone by the time the Explorer Sport Trac finally gets moving.
Utility
The GMC is a better choice than the Ford in terms of transporting cargo, especially if you often need to carry a lot of cargo or pets.
The Sierra 1500 will most certainly prove friendlier than the Ford Explorer Sport Trac for those of you with frequent child-cargo.
The GMC outpulls the Explorer Sport Trac by a massive margin.
Convenience
You'll most certainly have to take the Ford Explorer Sport Trac for a fill-up more often than the GMC Sierra 1500 because of its tank size and fuel economy.
Comfort
Taller drivers will substantially enjoy the extra head room in the Sierra 1500's front cabin compared to the Explorer Sport Trac.
The Ford Explorer Sport Trac offers more head- and leg-room to your passengers than the GMC Sierra 1500 does.
Dimensions
Your wallet will hurt more every time you fill up the Sierra 1500 than the Ford Explorer Sport Trac because of its bigger tank.
The GMC and the Ford Explorer Sport Trac compete for the same parking spaces.
The GMC Sierra 1500's shorter wheelbase may produce a less-settled highway ride but a nimbler feel in daily traffic than the Ford Explorer Sport Trac.
Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. The Ford is considerably cheaper to get to the dealership than the GMC Sierra 1500.
As far as MSRP, the GMC Sierra 1500 doesn't cost much less than the Explorer Sport Trac.
Warranty
The GMC and the Ford have the same basic warranty.