2003 GMC Sierra 3500 Extended Cab Review | Edmunds.com

2003 GMC Sierra 3500 Extended Cab

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Certified Pre-Owned (CPO) is a category of used car. Often late-model vehicles, they have been inspected, refurbished, if necessary, and are under warranty by the manufacturer.
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GMC Sierra 3500 Features and Specs

Features & Specs

  • Engine 6.0 L V 8-cylinder
  • Drivetrain Rear Wheel Drive
  • Transmission 4-speed Automatic
  • Horse Power 300 hp @ 4400 rpm
  • Fuel Economy 0/0 mpg
  • Bluetooth No
  • Navigation No
  • Heated Seats No

Review of the 2003 GMC Sierra 3500

  • One of the biggest, most powerful pickups you can drive without going to trucking school.

  • Safety
  • Pros

    Powerful drivetrains, roomy interiors, numerous available amenities.

  • Cons

    Spotty build quality, cheap 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 optional multifunction, fold-away mirrors. On the inside, GMC has added new seats, a more comprehensive driver information center, a redesigned instrument panel and optional dual-zone climate control and satellite steering wheel controls. On the hardware side, the standard 6.0-liter V8 gets electronic throttle control as well as the ability to run exclusively on compressed natural gas (CNG) or a mix of CNG and gasoline. Other upgrades include an improved Insta-Trac part-time four-wheel-drive system for reduced service costs, a more efficient starter for the 8.1-liter V8 and a revised headlight switch that allows drivers to turn off the daytime running lamps.

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Gas Mileage

EPA-Rated MPG

  • Not Available
  • cty
/
  • Not Available
  • highway
Calculate Yearly Fuel Costs
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What Others Are Saying

Customer Reviews



Gmc 8.1drw excab

by on
Vehicle: 2002 GMC Sierra 3500

Only problem has been the left door speaker went bad. Only thing I don't like about it is that the rear springs clunk with just the camper on some bumps at lower speeds




The worst truck ever made

by on
Vehicle: 2002 GMC Sierra 3500

just doesn't stack up to the ford at all



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Full 2003 GMC Sierra 3500 Review

What's New for 2003

The Sierra gets a revised look this year that includes a new front fascia, revised side moldings and optional multifunction, fold-away mirrors. On the inside, GMC has added new seats, a more comprehensive driver information center, a redesigned instrument panel and optional dual-zone climate control and satellite steering wheel controls. On the hardware side, the standard 6.0-liter V8 gets electronic throttle control as well as the ability to run exclusively on compressed natural gas (CNG) or a mix of CNG and gasoline. Other upgrades include an improved Insta-Trac part-time four-wheel-drive system for reduced service costs, a more efficient starter for the 8.1-liter V8 and a revised headlight switch that allows drivers to turn off the daytime running lamps.

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