Suburban is based on GM's superbly engineered full-size truck frame. Its V8 engines deliver strong torque for towing heavy loads, and it's supremely stable when pulling heavy trailers through nasty, windy weather. Suburban provides a stable, comfortable ride for long-distance travel. Last but not least, it's fully capable of slogging down muddy two-tracks, whether in pursuit of the great outdoors or to get some work done.

The 2005 model year brings some minor improvements. Fuel economy is improved. A revised tire-pressure monitor is now standard, alerting drivers when a tire needs air. New options include stand-alone traction control and 17-inch all-weather tires. The Z71 off-road package is available for 2WD models. A touch-screen navigation radio is available. The OnStar telematics system is upgraded with enhanced hands-free operation. Interior trim has been revised. Running boards are more aerodynamic. There's also a new 7-to-4-pin wiring adapter for the trailer package.

Completely redesigned for model year 2000, the Suburban then received a substantial update for 2003, with more than 40 major changes designed to enhance safety and improve reliability. The StabiliTrak electronic stability program became available for improved control on slippery surfaces. New airbag systems were designed to better protect children and adults of various sizes. Adjustable pedals became available for the comfort and safety for drivers of smaller stature. Brakes were refined, and an all-new electrical architecture promised improved reliability. XM Satellite Radio became available, along with a new Panasonic DVD system for back-seat monkeys. Changes for 2004 enhanced safety with Hydroboost brakes that provide power assist even if the engine stalls or is turned off.

Heavy-duty Suburban 2500-series models can be ordered with Quadrasteer electronic four-wheel steering for dramatically increased maneuverability in tight spaces and improved control when towing a trailer.