Used 2003 GMC Sierra 2500HD Consumer Reviews
Used Sierra 2500HD for sale
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Power Plus
jamminjay, 07/17/2003
2003 GMC Sierra 2500HD 4dr Extended Cab SLE 4WD LB (6.0L 8cyl 4A)
6 of 7 people found this review helpful
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.
Still smiling...
brian0105, 08/04/2003
2003 GMC Sierra 2500HD 4dr Crew Cab SLE 4WD SB (6.0L 8cyl 4A)
6 of 8 people found this review helpful
I researched long and hard when deciding on the $$ for the Duramax/Allison combo. Man am I pleased! It pulls my travel trailer like it wasn't even there. MPG has been better than my previous Firebird. Comfort is much better than I expected for a 3/4 ton. Looks? Man, you can't beat the Fire Red color! Don't know what it might take to wipe this smile off my face!
2003 GMC Sierra 2500HD for sale near you
Showing 3 of 28 listings
- Standard DieselMSRP: $13,995190 mi away
- SLE Diesel Crew CabMSRP: $18,995260 mi away
- SLE Diesel Extended CabMSRP: $19,500292 mi away
See all 28 listings
Fuel Economy
Chevy Man, 03/03/2010
2003 GMC Sierra 2500HD 4dr Crew Cab SLE 4WD SB (6.0L 8cyl 4A)
6 of 9 people found this review helpful
I've had my 2500HD for just under a year now and I LOVE it. The only problem I really have is its fuel economy. I average around 14 mpg, but where it lacks fuel economy it makes up for it in power. I haul around a skidsteer on a 14 ft open trailer. The skidsteer weighs more then my truck but still no problems pulling it. The fuel economy doesn't really change weather your hauling or not. I just purchased an SLR performance chip that should do the trick. This truck is perfect for anyone with the money to pay for gas.
Been driving this truck since new
T, 09/20/2021
2003 GMC Sierra 2500HD 4dr Extended Cab SLE Rwd LB (6.0L 8cyl 4A)
2 of 2 people found this review helpful
Bought the extended cab gas 6.0l engine with the 480LE transmission combo in 2003. Currently has 250k+, and other than a tranny rebuild at 150k and normal maintenance issues, this thing is a champ. Keep up with fluid changes, no problems. Has towing and carrying cap, no problems and it rides better loaded out with 1500 poinds. HEAVY undercarriage construction. Still running smooth and still with original plugs
- Safety
- Technology
- Performance
- Interior
- Comfort
- Reliability
- Value
Excellent Duramax Diesel!
Dave Hardin, 03/07/2003
2003 GMC Sierra 2500HD 4dr Extended Cab SLE 4WD LB (6.0L 8cyl 4A)
4 of 6 people found this review helpful
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!