Summary

What Edmunds.com says

With its powerful engine lineup and revised interiors, the heavy-duty Sierra makes a strong case for itself against the competition, but questionable build quality keeps us from calling it best in class.

Pros

Powerful drivetrains, roomy interior, numerous available amenities.

Cons

Spotty build quality, cheap interior materials.

What's New for 2004

Base trucks get upgraded via newly standard cruise control, chrome wheels, chrome rear bumper and chrome grille surround. The SLE trim adds foglamps to its generous list of features. The Work Truck Package (with unique grille treatment) is now available on all models. Lastly, a trio of new colors, Sand Beige Metallic, Silver Birch and Sport Red Metallic debut.

Consumer Ratings & Reviews

This Truck needs help!

Detailed Ratings

Overall Rating 

Performance: 8 Fun-to-Drive: 5 Build Quality: 6
Comfort: 6 Interior Design: 7 Reliability: 6
Fuel Economy: 6 Exterior Design: 6

Vehicle

2004 GMC Sierra 2500HD 2dr Regular Cab Work Truck 4WD LB (6.0L 8cyl 5M)

Review

Truck rides very rough. Truck's brakes are sluggish. Truck is 6 litre not great gas. Truck has had all kind of problems! If you have to stop fast you are in trouble. That's why this truck has been in 3 fender benders. Had to replace complete rear brakes and rear seals .

Favorite Features

Truck has good power and 4wheel drive.

Suggested Improvements

Truck needs better brakes, steering column, speedo, rear end needs to be beefed up. Suspension is sloppy. Tail gate needs to work

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It was nice at $1.89/gal for fuel.

Detailed Ratings

Overall Rating 

Performance: 8 Fun-to-Drive: 6 Build Quality: 9
Comfort: 8 Interior Design: 8 Reliability: 10
Fuel Economy: 1 Exterior Design: 7

Vehicle

2004 GMC Sierra 2500HD 4dr Extended Cab 4WD LB (6.0L 8cyl 4A)

Review

This truck has been used mostly on the highway, carries dirt/mulch and recreational toys. And has done so for 62,000 miles without a single mechanical problem! It was originally purchased for towing a camper. Within 6 months of purchase, rising gas prices made driving this thirsty vehicle downright painful! With the cruise control set at 65 station to station on an interstate,13.7mpg. Disappointments? The ventialtion system. The AC is not cold nor dry enough to defog windows. And the radio is horrible! Did I mention fuel efficiency?

Favorite Features

Reliability. Cruise control. Headlights. Sounds odd, but they're really bright!

Suggested Improvements

Improve the AC. Make power locks standard on base model. Improve the stereo. Oh yeah, best case13.7 mpg?

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Research Before Buying

Detailed Ratings

Overall Rating 

Performance: 2 Fun-to-Drive: 4 Build Quality: 2
Comfort: 7 Interior Design: 7 Reliability: 3
Fuel Economy: 2 Exterior Design: 7

Vehicle

2004 GMC Sierra 2500HD 4dr Crew Cab SLT 4WD SB (6.0L 8cyl 4A)

Review

The quality of this truck is questionable. Major issues include getting only 275 - 300 miles/tank of gas. Serious steering problems with absolutely no long-term fixes. This is a widespread issue which truly makes the truck a misery to drive! Rust at less than two years. Faulty air, seating, and other minor repairs. I can hardly imagine buying another due to GM's lack of being able to warrany their trucks and offering a fix on such a major steering issue. All they offer is a lube which needs to be applied every four to six months and does not really work well.

Favorite Features

Heated seats, good power, OnStar.

Suggested Improvements

Steering! So bad, I will have to get out of the truck. Overall quality of the truck needs improvement. Improve rear seat room.

1 out 2 people found this review helpful

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another awesome gm truck

Detailed Ratings

Overall Rating 

Performance: 10 Fun-to-Drive: 9 Build Quality: 10
Comfort: 9 Interior Design: 9 Reliability: 10
Fuel Economy: 7 Exterior Design: 9

Vehicle

2004 GMC Sierra 2500HD 4dr Crew Cab 4WD SB (6.0L 8cyl 4A)

Review

this is the fifth (sixth if you count my Tahoe) gm truck that i have had and it is by far the best. talk about reliable. a heavy duty truck that has no problems pullikng my triler in any clime and place. in the snow, on the beach, it does not matter. talk about space, i have two kids and a dog and we travel with no problems, even on long trips. i will never own another type of truck, from any dealer...now a hummer...that is a different issue. ron tootle major, us marine corps camp lejeune nc gm truck owner since 1985 1985 chevy s-10 1988 chevy s-10 2001 chevy silerado ext cab z-71 2002 gmc sierra ext cab z-71 2002 chevy tahoe 4x4 2004 gmc sierra 2500hd quad cab 4x4

Favorite Features

leather heated seats onstar 6 liter v8 towing package 4x4 in dash 6 disc changer

Suggested Improvements

bigger tires, 245 is not large enough, makes the tires look silly in the large wheel well. need to be at least 265 bed liner- spray in type. it is a necessity

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GMC Duramax

Detailed Ratings

Overall Rating 

Performance: 10 Fun-to-Drive: 10 Build Quality: 10
Comfort: 10 Interior Design: 10 Reliability: 10
Fuel Economy: 8 Exterior Design: 10

Vehicle

2004 GMC Sierra 2500HD 4dr Crew Cab SLT 4WD SB (6.0L 8cyl 4A)

Review

This truck is awesome. We pull a 5th wheel camper and it pulls it like there is nothing there at all. Great truck.

Favorite Features

Driver 1 vs Dirver 2 memory

Suggested Improvements

Bigger tires. Work on fuel mileage. Getting approx 16 now and am expecting to improve, but would be nice if it could be better.

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