2003 GMC Sierra 2500HD Consumer Reviews

Not Impressed

Written by: cynical13 on 11/27/2004

Vehicle

2003 GMC Sierra 2500HD 4dr Extended Cab Rwd SB (6.0L 8cyl 4A)

Review

I bought this truck as a replacement for my 96' 1500 as I needed more muscle to tow a 5th wheel trailer. The 8.1L has plenty of punch, but I struggled with traction on anything less than dry hard surfaces. I have already experienced the typical Chevy/GMC parking light burn out on one side that they can't seem to fix and I have had numerous fuel indicator malfunctions. The fuel consumption is killing me and towing or not is not much difference. Ready to look for an older/smaller model again!

Favorite Features

Very functional interior layout

Suggested Improvements

Find out what is cousing the parking light issue. I am tired of seeing so many 1997 and newer trucks with only one light on and now knowing it isn't just a bulb

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Bob's GMC

Written by: RBob on 08/18/2004

Vehicle

2003 GMC Sierra 2500HD 4dr Extended Cab SLT 4WD LB (6.0L 8cyl 4A)

Review

Drove this GMC across the country, many mountain roads and off highway. One of the most fun vehicles I have driven and I absolutely love the Turbodiesel and Allison transmission combination. I have had zero problems with this truck, you would think it was made in Japan for the quality.

Favorite Features

Power train, comfort. Fun to drive.

Suggested Improvements

I cannot think of any.

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Can't wipe the grin away

Written by: D/A Guy on 06/09/2004

Vehicle

2003 GMC Sierra 2500HD 4dr Crew Cab SLE 4WD SB (6.0L 8cyl 4A)

Review

Only service problem was the Service 4WD Problem as well. New module fixed problem. No other problems since. I found the ride to be very comfortable especially for a 3/4 ton. The room inside accomodates the family and kids with room to spare. 6 adults can ride in comfort with good leg and shoulder room. Milage is great for the power and weight. My average milage to-date is about 19 mpg over 17000 miles. The transmission is absolutely incredible and is what makes this truck exceptional. It handles heavy trailers with ease. I have yet to use all the power the Dmax puts out. It is without a doubt the best truck I have owned.

Favorite Features

Power of the Duramax. The smooth Allison tranmission and especially the tow/haul mode when pulling a trailer. Overall drivability ride and quietness especially with a diesel. Milage.

Suggested Improvements

Under the hood light. Convience lights under the dash and lumbar support. Minor really with the package as a whole

1 out 1 people found this review helpful

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Hot Duramax

Written by: J. Carroll on 06/09/2004

Vehicle

2003 GMC Sierra 2500HD 4dr Crew Cab SLT Rwd SB (6.0L 8cyl 4A)

Review

This duramax is bad to the bone added bully dog 75 hp system to the truck now get 19.6 in town and 23 on the highway. pulled my 30 ft 5th wheel RV thought Colarado never missed a lick passed everything on the road and still averaged 13.7 mpg. Truck will white smoke the tires through 3rd gear and out run a new 6.0l Powerstroke no problem.

Favorite Features

great performance and great fuel milage

Suggested Improvements

change the front bumper so you can add larger tires without having to modify bumper

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What A Truck - Diesel/Allison Combo

Written by: Happy GMC Owner on 10/20/2003

Vehicle

2003 GMC Sierra 2500HD 4dr Extended Cab SLT 4WD SB (6.0L 8cyl 4A)

Review

Bought this last May, love the Duramax/Allison Combo - pulls my 10000 pound 5th wheel like it wasn't there. 12 MPG @ 65 MPH - nooo problem. Very stable on the road.

Favorite Features

Engine/Tranny Combo, interior, leather seats, looks great!

Suggested Improvements

Put a lock on the tailgate - for the price of this truck it should be standard

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dura-maxed

Written by: workhorse on 09/19/2003

Vehicle

2003 GMC Sierra 2500HD 4dr Extended Cab SLE 4WD SB (6.0L 8cyl 4A)

Review

I have owned my gmc for a short while and am very pleased with the Duramax/Allison combination,I have owned powerstrokes in the past,the difference is amazing, the Duramax power range extends for a much longer time, torque is great.Allison transmission holds gear going down steep grades and the mileage for a full size pickup is awesome (average is 18 mpg, I have gotten as high as 21 mpg)

Favorite Features

Duramax motor Allison transmission,smooth ride for a full size truck.very happy!

Suggested Improvements

would have preferred crew cab,extended cab doors become a hassle when parked between cars

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EXHAUSTED

Written by: Frustrated Rancher on 08/15/2003

Vehicle

2003 GMC Sierra 2500HD 4dr Crew Cab Rwd SB (6.0L 8cyl 4A)

Review

Disappointed in the power. Tried to pull a 16' stock trailer with two bulls. It was all it could do to get over a small hill. Constant air conditioning problems. Unscrupulous dealership tells me it has been repaired. Lies. Electric window problems. Needs larger fuel tanks for a truck that gets 13mph. Wears front tires knobby. Stress cracks in the windshield. Brakes squeel. Tapping in the engine. Would I buy again. No Chance. Off to the dealership for engine noise;AC repairs again. Watch out Ford/Dodge, here I come.

Favorite Features

Looks Great

Suggested Improvements

Give me a product that I feel is worth what I paid for it.

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Still smiling...

Written by: brian0105 on 08/04/2003

Vehicle

2003 GMC Sierra 2500HD 4dr Crew Cab SLE 4WD SB (6.0L 8cyl 4A)

Review

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!

Favorite Features

Duramax/Allison XM radio (didn't want it originally, but no longer listen to regular radio!) Bench seat (nice to have my girl next to me)

Suggested Improvements

Light under the hood (c'mon General, for $40k, throw in a light!)

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??

Written by: Ralph gallo on 07/20/2003

Vehicle

2003 GMC Sierra 2500HD 4dr Extended Cab SLE 4WD SB (6.0L 8cyl 4A)

Review

this is great truck ! no question about it .

Favorite Features

tow/haul mode

Suggested Improvements

almost perfect ! would be nice to have two tone color for the truck

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Power Plus

Written by: jamminjay on 07/17/2003

Vehicle

2003 GMC Sierra 2500HD 4dr Extended Cab SLE 4WD LB (6.0L 8cyl 4A)

Review

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.

Favorite Features

8.1 liter 345 HP and Alison Auto. Electric extendable mirrors.

Suggested Improvements

Light weight step should come standard, I'm 6' and it is too high. Back doors should have exterior handles to allow entry & exit without opening front door.

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