If not for its disappointing reliability record, this competent pickup would be a Consumer Reports recommended model. The interior is quiet and roomy, handling and braking are good for a truck, and four-wheel ABS is standard. The four-door extended-cab versions are also the only such pickups with habitable rear seats. The front seats are large but not well shaped. Four-wheel-drive models offer a selectable system with a full-time mode. The Sierra Denali is an expensive AWD model with a 6.0-liter V8 and a four-wheel-steering setup called Quadrasteer. This system enhances maneuverability in tight spaces and improves stability while towing.