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 21 through 30 of 65.00

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  WAS FORD DRIVER FOR 15 YEARS - 2003 GMC Sierra 1500
  By RAD1959 - January 6 - 10:00 am

  I have been a loyal Ford man for 15 years. I shopped around this time, great incentives abound. The Sierra was so damn solid and quite, I could stop thinking about it. Fords windnoise was the convincer. GMC is a great drive, quiet truck, super performer and looks great too. Sign me, A Ford Use To Be.......

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  Silervado to GMC - 2003 GMC Sierra 1500
  By wrench1 - July 4 - 7:10 am

  Traded in a 2002 Silverado for this 2003 Sierra. Got the color and options that I really wanted, plus improved performance with 2003 trucks. Build quality was poor with lots of visits to dealer for minor warranty repairs, but now the truck has been terrific. Looking now to downsize for a smaller truckk with almost same towing for fish/ski boat. Fuel mileage has been 21-23 with 5.3L and 3.42 rear, synthetic oil, tires pumped up to 44 lbs always.

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  2003 GMC 1500HD - 2003 GMC Sierra 1500
  By GM 1500HD - December 20 - 2:50 pm

  Great truck, only 1 issue. With a little over a thousand miles, sounded like loose sheet metal under the truck. Ended up going back to the dealer 6 times before I went to another dealer. Found out it was the A/C compressor. Mechanic stated that it would build up too much pressure. Thank goodness I didnt put it off. Over $2500 in parts & labor. Not a single problem since. For such a big truck, get wonderful gas mileage. Only one thing I would change... get better viewing side mirrors. Lots of blind spots with the OEM mirrors.

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  Love my truck... so far - 2003 GMC Sierra 1500
  By Jim Talley - November 4 - 2:00 am

  In January I bought a 2003 GMC Sierra 1500 SLE with the trailering package and the Z71 off-road package. The truck is quite as a church mouse on the inside and runs beautifully. The ride is firm, like a truck, but not so stiff that you have to visit your dentist and have your fillings put back in weekly. Visability is very good and the inside is extremely comfortable (including the back seat). Transmission shift isnt always smooth as GM silk and there is some growl from the front end in 4WD... time will tell if these are normal or not.

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  my truck - 2003 GMC Sierra 1500
  By wright - August 25 - 10:00 am

  The automatic dual climate control is nice, but in the auto mode...you cant seem to keep the interior as cool as you might want. The silent recall concerning the rust behind the front bumper was something I was definately unhappy about. I had to learn about it on the internet, and when I took it to two different dealers, I got a bit of the runaround. Both claimed that I had the only truck that had been brought in for this problem.

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  2003 GMC 4WD Pickup - 2003 GMC Sierra 1500
  By Walt Moore - May 29 - 7:36 pm

  I bought this new and its generally been great. The windshield wiper control module burned out but that has been the only unscheduled service in 37,000 miles. So far I really like this truck and would buy it again, but I wont really know for another 15 years, which is about how long I plan to keep it.

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  Best GMC Yet ! There is no competition! - 2003 GMC Sierra 1500
  By Towers - March 30 - 10:00 am

  I have owned ford, Nissan, and GMC. My last GMC (2001) was a great truck (SLE ext cab 4x4), but it needed a larger engine and a leather interior. The 2003 was what I was hoping for. Plenty of power, great ride, creature comforts, and can still haul two yards of topsoil. I can look good taking my wife out to dinner and still get the rugged use of a truck!

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  my truck - 2003 GMC Sierra 1500
  By donny - February 26 - 2:00 am

  I love my truck, very awesome.

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  Runs real good.. but still cautious. - 2003 GMC Sierra 1500
  By SDW - November 10 - 10:00 am

  Im a Chevy/GMC man- have been for ten years; bought my new GMC 1500 Sierra SLE at the end of February, Ive enjoyed my truck for months until lately when the quadcab doors started to rattle and my 4wd started to growl. GMC has tried to adjust the doors with no luck and they dont know what the growling is in the 4wd, but other than that the trucks been fine.

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  Pleased - 2003 GMC Sierra 1500
  By Pop-pop - October 15 - 2:00 am

  I am pleased with this vehicle. Roomy and easy to get in and out of. Plenty of "inside" storage space (rear seats fold down for a huge platform). Plenty of power.