2003 GMC Sierra 1500 Extended Cab Review | Edmunds.com

2003 GMC Sierra 1500 Extended Cab

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GMC Sierra 1500 Features and Specs

Features & Specs

  • Engine 6.0 L V 8-cylinder
  • Drivetrain All Wheel Drive
  • Transmission 4-speed Automatic
  • Horse Power 325 hp @ 5000 rpm
  • Fuel Economy 11/15 mpg
  • Bluetooth No
  • Navigation No
  • Heated Seats Yes

Review of the 2003 GMC Sierra 1500

  • Powerful drivetrains, classic exterior styling and unique options make the Sierra a pickup worth considering, but Fordís new F-150 has it beat when it comes to interior design and overall refinement.

  • Safety
  • Pros

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

  • Cons

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

  • What's New for 2003

    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.

What Others Are Saying

Customer Reviews

  Average Consumer Rating (6 total reviews)


Beautiful truck but a lemon!

by on
Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab Denali AWD SB (6.0L 8cyl 4A)

My 03 Serria Denali is a beautiful truck, but i have had one problem after another. New power steering pump, master cylnder, fuel pump, alternator, 2 starters!, new steering column, lower intake, new front end bearings, and emissions control valve. Now my left blinker turns on my hazards! I give up....give me a new truck!




Super truck

by on
Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab Denali AWD SB (6.0L 8cyl 4A)

I have just turned 70k in my 2003 Denali and its been a solid truck. Regular maintenance and I am told by the lube guy that there is a very small fluid leak from the intake. This is common in Vortec engines according too him. I guess overall I have been very impressed I just hope they have used better materials for the interior of newer models. I don't see myself ever replacing my truck it has been a good ride so far.




I love this truck!

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Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab Denali AWD SB (6.0L 8cyl 4A)

I have owned a Ford F150 extended cab and Z71. I was a little leery of this truck because everybody complained about gas mileage. My Z got about 13 and my F150 got about 14. I'm getting a solid 13.7 so big whoop. I love this truck performance and comfort. My wife drives a Yukon and gets 17. For the 3 difference I'd rather have the quadrasteer and the comfort. I've put 30,000 on this truck and about to turn 50,000 (bought it used). With GM droping the quadrasteer, I plan on keeping it for some time. The big chrome grille let them know you're comin' and the 6.0 let's them know you gone!




What a ride

by on
Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab Denali AWD SB (6.0L 8cyl 4A)

Vehicle weight makes for a comfortable ride. Handles the interstate like a luxury car. The Quadrasteer feature makes moving around the city a breeze. Parallel parking and parking garages with appropriate height clearance are easy to handle. The Denali has good acceleration. Does not get blown around when passing the Big Rigs. Don't expect better than 14 miles per gallon, about 13 mpg at 80 mph. Once you've driven the Denali you'll never want another full-size pick-up without Quadrasteer.




Best pickup on the road

by on
Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab Denali AWD SB (6.0L 8cyl 4A)

I couldn't ask for better handling, a better ride, or more power. This vehicle blows the competition away. Quadrasteer makes parking & curvy road handling a breeze, sticks to the road like it's mounted on rails. Interior quality is the best I've found anywhere, the heated leather seats moulds to your body for the ultimate seating comfort. Onstar is a must for safety & convenience. XM satellite radio is better than having a hundred CD's, also the Bose sound system quality is second to none. Select ride smoothes out the bumps in the road lmost as if they didn't exist.




Wind noise

by on
Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab Denali AWD SB (6.0L 8cyl 4A)

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



Full 2003 GMC Sierra 1500 Review

What's New for 2003

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.

Talk About The 2003 Sierra 1500

Gas Mileage

EPA-Rated MPG

  • 11
  • cty
/
  • 15
  • highway
Calculate Yearly Fuel Costs