Cost
The destination charge is a standard charge for transporting the vehicle from its point of origin to the dealer. It costs almost the same to get the Dodge Ram 3500 to the dealership as the Sierra 3500HD.
In terms of MSRP, the Dodge Ram 3500 costs substantially more than the GMC Sierra 3500HD.
Utility
The GMC Sierra 3500HD is likely a better choice than the Dodge Ram 3500 as far as hauling capacity, especially if you often need to carry a lot of stuff or large animals.
The Dodge Ram 3500 and the GMC Sierra 3500HD can accommodate the same number of passengers.
There's little the Ram 3500 can tow that the GMC Sierra 3500HD cannot.
Comfort
While the front cabin in the GMC Sierra 3500HD offers a bit more head room than the Dodge Ram 3500, there frankly isn't much of a difference.
The Dodge Ram 3500 offers more head- and leg-room to your passengers than the GMC Sierra 3500HD does.
Dimensions
The GMC Sierra 3500HD and the Dodge Ram 3500 compete for the same parking spaces.
Performance
With that kind of horsepower, both the Dodge Ram 3500 and the GMC Sierra 3500HD are genuine speedsters.
Handling
With their similar turning circles, the Dodge Ram 3500 and the GMC Sierra 3500HD quite certainly handle about the same into and out of tight spots.
Drivetrain
The Sierra 3500HD's engine is slightly smaller than the Dodge Ram 3500's, but not terribly so.
Torque is roughly equivalent to acceleration, and in this respect, the Dodge Ram 3500 is tremendously more powerful than the GMC Sierra 3500HD.
The Ram 3500 packs quite a wallop compared to the Sierra 3500HD when it comes to torque, which is roughly equivalent to acceleration.
Warranty
The GMC Sierra 3500HD and the Dodge Ram 3500 have the same basic after-sale protection.