Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs roughly the same to get the Tundra to the dealership as the Sierra 2500HD.
Regarding MSRP, the Toyota Tundra costs substantially less than the Sierra 2500HD.
Utility
The Toyota and the Sierra 2500HD can accommodate the same number of passengers.
The GMC Sierra 2500HD is a better choice than the Toyota Tundra as far as transporting cargo, especially if you often need to carry a lot of cargo or large dogs.
Towing is significantly more the GMC Sierra 2500HD's forte than it is the Toyota Tundra's.
Comfort
Taller drivers will considerably enjoy the extra head room in the GMC Sierra 2500HD's front cabin compared to the Toyota.
While the rear of the GMC Sierra 2500HD provides a bit more head- and leg-room than the Toyota Tundra, there honestly isn't much of a difference.
Dimensions
The GMC Sierra 2500HD is substantially more bulky than the Toyota Tundra.
The GMC's tank is almost the same size as the Tundra's, though the Toyota's is a bit larger.
The Toyota Tundra and the GMC Sierra 2500HD compete for the same parking spaces.
Handling
With its tighter turning circle, the Toyota Tundra is most certainly more agile than the Sierra 2500HD, something to consider if you do a lot of city driving; on the flip side, remember that a vehicle with a tight turning circle may feel a bit twitchy on the highway.
Drivetrain
The Tundra's engine is substantially smaller than the GMC's. Keep in mind that a smaller engine usually has to work a little harder; on the other hand, smaller engines are often cheaper to fix.
Torque is roughly equivalent to acceleration, and in this respect, the Sierra 2500HD is tremendously more powerful than the Tundra.
The Sierra 2500HD packs quite a punch compared to the Toyota Tundra with respect to torque, which is roughly equivalent to acceleration.
Warranty
The GMC Sierra 2500HD and the Toyota Tundra have the same basic warranty.