2003 GMC Sierra 1500 Extended Cab reviews and buying guide.

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2003 GMC Sierra 1500 Extended Cab

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 Sierra 1500 extended cab is available in 2WD or 4WD configurations. The extended cab has three cargo boxes: a short 6.5-ft. flush-fender Fleetside box, 6.5-ft flare-fender Sportside box and a long 8.1-ft. Fleetside box. In addition, customers purchasing the extended cab can start with a base SL model or move up to the stocked SLE and fully loaded SLT models.

Under the Hood

The standard engine that comes with the Sierra 1500 extended cab is a Vortec 4.8-liter V8 with 275 horsepower at 5200rpm and 285lb-ft of torque at 4000rpm. It provides plenty of power out of the gate, and maintains a steady pace at high speeds as well. 5-speed manual transmission is standard, while 4-speed automatic is also available.

For safety, manufacturers of the 2003 Sierra 1500 extended cab have enhanced the truck's brakes. The result is a vacuum boost power, four-wheel disc, four-wheel antilock brake system with Dynamic Rear Proportioning. A front-seat dual-level airbag configuration is a supplemental restraint system designed to detect vehicle deceleration and, based on the deceleration data, provide an appropriate amount of air-bag inflation.

Adding to the versatility that defines the Sierra series, an engine upgrade is offered for customers purchasing the 1500 extended cab. The Vortec 5.3-liter V8 with 285 horsepower at 5200rpm and 325lb-ft of torque at 4000rpm will certainly satisfy.

Standard Features, Options Packages and Style

Cab comfort is the name of the game with the Sierra 1500 extended cab. Standard features are taken care of in the SL model, while the SLE and SLT models come with such enhancements as a Radio Data System with XM (U.S.) or DAB (Canada) interface capability, remote keyless entry and an AM/FM CD player.

There are plenty of options packages for owners who like to tune-up their trucks. Comfort, performance and styling are all ready for personal makeovers.

The 2003 Sierra 1500 extended cab: high-level workmanship and comfort in a full-size pickup.

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2003 GMC Sierra 1500 - Consumer Guide provides test drive reviews and vehicle quality ratings.