GMC advertising claims Sierra is a "professional grade" truck. With stout engines, roomy cabs and rugged good looks, the Sierra impresses. But the cabin is constructed of rather cheap parts, and we've found fit-and-finish concerns on several Sierras. That doesn't spell "professional grade" to us.
- Powerful V8-engine selections, numerous configurations, comfy cabins.
- Spotty fit-and-finish concerns, low-grade interior materials.