Used GMC Sierra 1500 Regular Cab, Extended Cab and Crew Cab: reviews and buying guide.

Used GMC Sierra 1500 Regular Cab, Extended Cab and Crew Cab Guides by Year:

The GMC Sierra comes in a wealth of sizes and configurations, each offering a high level of performance, comfort and versatility. The 1500 regular cab, though on the bottom rung of the ladder in terms of size, is by no means last on the list when it comes to quality.

The 2003 GMC Sierra 1500 extended cab adds dual rear-hinged back doors and a passenger rear bench seat to the regular cab size, resulting in up to six-passenger seating (five with front bucket seats). For 2003, the light-duty Sierra introduces an extensive array of segment-defining safety, performance and refinement features into its already impressive lineup. Powertrain upgrades also provide more fuel-efficient, cleaner engine operation, while a redesigned cab increases the comfort of the ride.

The 2003 GMC Sierra 1500 crew cab adds dual rear-hinged back doors and a passenger rear bench seat to the regular cab size, resulting in up to six-passenger seating (five with front bucket seats). For 2003, the light-duty Sierra introduces an extensive array of segment-defining safety, performance and refinement features into its already impressive lineup. Powertrain upgrades also provide more fuel-efficient, cleaner engine operation, while a redesigned cab increases the comfort of the ride.