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.

Consumer reviews

Read what other owners think about the 2003 GMC Sierra 2500HD.

Overall Consumer Rating

4.427 reviews

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5(59%)

4(26%)

3(11%)

2(4%)

1(0%)

Most helpful consumer reviews

Power Plus

jamminjay,07/17/2003

2003 Sierra with 8.1 liter 345 HP and Alison Auto. Plenty of power for towing. A little hestitant on take off when cold. 20,000 miles in 6 months and it runs like day 1. Fuel mileage is absolutely HORRENDOUS!!!! Towing an enclosed race car trailer x-country avg. mileage = 7.95. Driving enmpty no load at all avg. mileage = 12.98.

Excellent Duramax Diesel!

Dave Hardin,03/07/2003

Don't want to spend to much time here, but if your thinking about buying this vehicle w/ this motor, all I would say is "do it". It awesome!

Nice for towing

john gentry,08/22/2005

This truck was bought for towing and does a great job pulling our fifth wheel camper.

Duramax and Allison are superior

Jim T,10/29/2009

I have owned this truck since new in 2003. Only in the last several years have I used it to its full potential. I have pulled a 10,000 lb fifth wheel to Florida twice and a new 12,000 lb fifth wheel to GA last week and I averaged a little over 13 mpg. On the return trip I got over 24 mpg running at 70 mph all day. I do have a tonneau cover for the bed which might help. I first took

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Features & Specs

MPG

N/A city / N/A hwy

Seats 6

4-speed automatic

Gas

300 hp @ 4400 rpm

MPG

N/A city / N/A hwy

Seats 6

4-speed automatic

Gas

300 hp @ 4400 rpm

MPG

N/A city / N/A hwy

Seats 6

4-speed automatic

Gas

300 hp @ 4400 rpm

MPG

N/A city / N/A hwy

Seats 6

4-speed automatic

Gas

300 hp @ 4400 rpm

See all Used 2003 GMC Sierra 2500HD features & specs

More about the 2003 GMC Sierra 2500HD

Used 2003 GMC Sierra 2500HD Overview

The Used 2003 GMC Sierra 2500HD is offered in the following submodels: Sierra 2500HD Crew Cab, Sierra 2500HD Regular Cab, Sierra 2500HD Extended Cab. Available styles include 4dr Crew Cab 4WD SB (6.0L 8cyl 4A), 4dr Crew Cab 4WD LB (6.0L 8cyl 4A), 4dr Extended Cab 4WD LB (6.0L 8cyl 4A), 4dr Extended Cab 4WD SB (6.0L 8cyl 4A), 4dr Extended Cab Rwd LB (6.0L 8cyl 4A), 4dr Crew Cab SLE 4WD SB (6.0L 8cyl 4A), 4dr Extended Cab SLE 4WD LB (6.0L 8cyl 4A), 4dr Crew Cab SLE 4WD LB (6.0L 8cyl 4A), 4dr Extended Cab SLE 4WD SB (6.0L 8cyl 4A), 4dr Extended Cab Rwd SB (6.0L 8cyl 4A), 2dr Regular Cab 4WD LB (6.0L 8cyl 5M), 2dr Regular Cab Rwd LB (6.0L 8cyl 5M), 4dr Crew Cab Rwd SB (6.0L 8cyl 4A), 4dr Crew Cab Rwd LB (6.0L 8cyl 4A), 2dr Regular Cab Work Truck 4WD LB (6.0L 8cyl 5M), 4dr Crew Cab SLE Rwd LB (6.0L 8cyl 4A), 4dr Crew Cab SLE Rwd SB (6.0L 8cyl 4A), 2dr Regular Cab SLE 4WD LB (6.0L 8cyl 4A), 4dr Extended Cab SLE Rwd SB (6.0L 8cyl 4A), 2dr Regular Cab SLE Rwd LB (6.0L 8cyl 5M), 4dr Extended Cab SLE Rwd LB (6.0L 8cyl 4A), and 2dr Regular Cab Work Truck Rwd LB (6.0L 8cyl 5M).

What's a good price on a Used 2003 GMC Sierra 2500HD?

Price comparisons for Used 2003 GMC Sierra 2500HD trim styles:

The Used 2003 GMC Sierra 2500HD SLE is priced between $8,997 and$13,990 with odometer readings between 136083 and175488 miles.
The Used 2003 GMC Sierra 2500HD Base is priced between $10,499 and$10,499 with odometer readings between 144781 and144781 miles.

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Which used 2003 GMC Sierra 2500HDS are available in my area?

Shop Edmunds' car, SUV, and truck listings of over 6 million vehicles to find a cheap new, used, or certified pre-owned (CPO) 2003 GMC Sierra 2500HD for sale near. There are currently 3 used and CPO 2003 Sierra 2500HDS listed for sale in your area, with list prices as low as $8,997 and mileage as low as 136083 miles. Simply research the type of car you're interested in and then select a used car from our massive database to find cheap prew-owned vehicles for sale near you. Once you have identified a used vehicle you're interested in, check the Carfax and Autocheck vehicle history reports, read dealer reviews, and find out what other owners paid for the Used 2003 GMC Sierra 2500HD.

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Find a used GMC Sierra 2500HD for sale - 4 great deals out of 5 listings starting at $19,414.

Find a used GMC for sale - 1 great deals out of 14 listings starting at $13,083.

Find a used certified pre-owned GMC Sierra 2500HD for sale - 4 great deals out of 22 listings starting at $15,062.

Find a used certified pre-owned GMC for sale - 9 great deals out of 9 listings starting at $17,430.

Compare prices on the Used GMC Sierra 2500HD for sale in Ashburn, VA to other major cities

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Should I lease or buy a 2003 GMC Sierra 2500HD?

Is it better to lease or buy a car? Ask most people and they'll probably tell you that car buying is the way to go. And from a financial perspective, it's true, provided you're willing to make higher monthly payments, pay off the loan in full and keep the car for a few years. Leasing, on the other hand, can be a less expensive option on a month-to-month basis. It's also good if you're someone who likes to drive a new car every three years or so.

Used 2003 GMC Sierra 2500HD

Used