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 4.8 L V 8-cylinder
  • Drivetrain Rear Wheel Drive
  • Transmission 4-speed Automatic
  • Horse Power 270 hp @ 5200 rpm
  • Fuel Economy 14/18 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 (7 total reviews)  |  Write a Review


Best vehicle i have ever

by on
Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab SLE Rwd SB (4.8L 8cyl 4A)

Bought truck new in 03,I have over 140K and have not had to spend $1 on repairs. Replace fluids and do proper maintenance and it runs as good as the day I bought it.Would like to buy a new truck but cannot justify replacing it as it is so reliable. I drive a lot of highway miles and get almost 19 MPG if I keep it around 70 MPH.




You can't go wrong

by on
Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab SLE Rwd SB (4.8L 8cyl 4A)

Purchased this truck with 48K and am very surprised of the quality of this truck. Being five years old I expected the suspension to maybe a tad loose or at the very least expected to hear cabin rattles and squeaks. Nothing; feels like a brand new truck. I have the SLT with the Bose and heated leather buckets. You never want to get out of it! Looked at all the other manufacturers and now know without question, I made the right choice.




Silervado to gmc

by on
Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab SLE Rwd SB (4.8L 8cyl 4A)

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.




Great truck

by on
Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab SLE Rwd SB (4.8L 8cyl 4A)

Can't say enought about this truck. I moved up from a 4cyl Toyota because I needed to be able to tow a ski boat. With a full bed of coolers and ski supplies and 6 passengers plus the boat, I can't even tell there's a boat back there. I drive 60 highway miles a day to work and have yet to find anything that rides as smooth. I had an issue with a low pressure sensor on the A/C but that was under warranty and fixed several years ago. Other than 3 sets of tires and a bunch of oil and filter changes I have had no reason to work on the truck It's fun to drive and has never let me down. Even in the Georgia heat the A/C will freeze you out.




Nice truck

by on
Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab SLE Rwd SB (4.8L 8cyl 4A)

Excellent truck. Electronic controls replaced under warrenty. Get 19.5 mpg on a 30 mile trip to work one way. Great sound and very comfortable ride. 5.3L engine that would pull a house up a hill.




Great truck

by on
Vehicle: 2003 GMC Sierra 1500 4dr Extended Cab SLE Rwd SB (4.8L 8cyl 4A)

I can not be happier with my Sierra. I needed a truck that would tow our 17 foot ski boat and what I got was much better. I traded in a beautiful 1993 Toyota 2.4L pick-up that had 253,000 on her and was still going strong. I hated to do it but I had to have something that would tow a ski boat. I will admit that I looked at other trucks including the Tundra but nothing came close to the comfort of the Sierra. I drive 72 miles round trip in Atlanta traffic daily and this truck is more comfortable than any car. After I replaced the factory GoodYear tires with Firestone's, I had no trouble on wet roads and the ride is whisper quiet. No problems with the truck or repairs needed.



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

  • 14
  • cty
/
  • 18
  • highway
Calculate Yearly Fuel Costs