Overview & Reviews

The Sierra gets a revised look this year that includes a new front fascia, revised side moldings and an additional wheel design. Top-of-the-line models get power-folding heated mirrors with puddle lamps and turn signal indicators. Inside, the Sierra now offers a Bose stereo system and XM Satellite Radio. The instrument panel and center console have been redesigned, and GMC has added new seats, a more comprehensive driver information center, optional satellite steering wheel controls and a dual-zone climate control system. For increased safety, Sierras now feature a standard front-passenger-sensing system and dual-stage airbags. All 4.3-liter V6-equipped Sierras and California-emission V8s are now ULEV certified, while electronic throttle control is now standard on all V8 engines. Finally, the Autotrac four-wheel-drive system has been modified for less intrusiveness at low speeds, and the brake system received upgrades that provide better pedal feel and improved overall performance.

• Roomy extended-cab models, strong V8 engines, innovative features.

• Spotty fit-and-finish concerns, low-grade interior materials.

User Reviews:

Showing 1 through 10 of 65.00

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  Worst Vehicle I have ever owned - 2003 GMC Sierra 1500
  By Drivernator - October 2 - 2:00 am

  This is the worst vehicle I have ever owned. It has 8000 miles and is always in the shop. It rattles (has been down 1 dirt road for 3 miles), master brake cylinder went out, new front brakes, passenger p/w doesnt work properly (3X to dealer and still not fixed). The rear axle seals have now started leaking. Will never buy another U.S. built auto.

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  Review - 2003 GMC Sierra 1500
  By R Coyle - April 2 - 11:33 am

  Bought new in late 2002 truck has been average for comfort and mileage is good. Reliability is not good to many small issue my truck only has 60k and have replaced both front wheel bearings, replaced two power window motors, had to replace sensor for ABS brakes, steering gear box and now the cluster is going bad. GM know the cluster unit is an issue but refused to help on the repair cost. I think I am going to look at the Toyota Tundra for my next truck. GM just need to have a better warranty on the little things that are always going bad on their vechiles.

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  03 GMC Z71 REVIEW - 2003 GMC Sierra 1500
  By 03 Z71 - April 12 - 2:00 am

  It has had too many problems for a truck that costs as much as it does, with only 6000miles. First the tailgate had to be replaced b/c it had holes in it, not sure from what. Next the mirror display(comp.& temp.)went out, had to be replaced, then I found that the passenger side a/c gets stuck on hot when you turn it all the way up, still working on it, now the front axle housing is leaking oil. This truck has never been in the mud, or ragged. What a waste of my time and money, I will never buy again or recomend a GMC product to anyone.

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  So far So Good - 2003 GMC Sierra 1500
  By Joe - November 2 - 10:26 pm

  Bought used for 10,500. Low miles 56k. My first real truck. I didnt want to afford a Tundra so this fell in my exact range of price. Drives like a truck and runs like a truck. Its been strong for the couple months of ownership. The seatbelt squeked but some wd-40 after taking off the plastic clip cleaned it right up. BEWARE of installing aftermarket cd players in here. I had to pay 120 dollars for a wire harness do my air bags and door chime worked! The truck is roomy and fits side and rear passengers very well. The spare tire holder under the truck wont work but hey, for the price could not beat it. Looking forward to 4wd this winter and owning a nice big truck.

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  Wind noise - 2003 GMC Sierra 1500
  By zbanger - July 21 - 2:00 am

  Passenger side wing window wind noise terrible. Three trips to dealer with whole windo replaced. Problem still there.