The GMC Sierra (and its Chevrolet Silverado twin) will be replaced this fall by a truck based on the new Chevrolet Tahoe.
The 2004 Z71 Silverado that we tested had a stiff, choppy ride.
Other trim lines ride slightly better.
Braking is adequate, and fit and finish is unimpressive.
The powertrain isn't as smooth as competing models from Toyota or Nissan.