Overview & Reviews

Both light- and heavy-duty 2500s sport new torsion bar front suspensions. Light-duty models now offer optional traction control and standard child safety-seat tethers. Heavy-duty Sierras are completely redesigned for 2001 offering two new engines and transmissions, bigger interiors and numerous other improvements aimed at buyers looking for a "professional grade" truck from GM.

• Class-leading engines and hauling capacity, roomy interior, superior brakes.

• Unproven engines and drivetrains, cheap interior materials.

User Reviews:

Showing 1 through 10 of 20.00

• 

  seats not up to mar - 2001 GMC Sierra 2500HD
  By brian - October 23 - 10:00 am

  For a top of the line truck that listed for over $32000 new you would think the company would put in better seats ;such as more padding in the bottom seat and go back to having the whole seat move by power not just the bottom. (this is for the cloth seat). the seats in my 1997 were more conforbly , other than the seatr it is an excellent truck.

• 

  The Best Trruck On The Road - 2001 GMC Sierra 2500HD
  By JOE_FROM_MO - May 4 - 10:00 am

  I love my truck. It was bought to work and it does that. There is a lot of Maintnaice on this truck though. The style and beauty of this thing is awsome. I like the looks of this truck more than the new ones, but you know how guys are. We want the latest, greatest thing. Im sick of having to replace the main engine drive belt every 15000 miles. It starts squiling and I cant handle that. And it sucks the dealer never has the parts to fix a damn thing when you take there. You have to go back and forth two, three, or sometimes four times before anything gets fixed. great big bummer since there is not a dealer anywhere close to where i live.

• 

  MY 2500 HD - 2001 GMC Sierra 2500HD
  By MY 2500 HC - May 16 - 2:00 am

  Overall Good Truck. I am impressed with the sturdiness of the truck. The 6.0L has provided plenty of power with only occasionaly towing. However, the engine began knocking for the first 5 minutes on start up at about 17000 miles. GM says its o.k. but extended the engine warranty to "make me feel better." Had to have work done on steering column as it began knocking when I hit bumps. Speaker in passenger door had to be replaced. I am now noticing some delay or slip in the transmission when the stop light turns green. A little scared where this all might lead. Dont have the Allison.

• 

  SLT 2500HD 4WD XCAB SB 8.1L ALLISON 5SPD - 2001 GMC Sierra 2500HD
  By M HILL - January 11 - 2:00 am

  This is one awesome truck. We are appreciative of the creature comforts, all around visibilty, safety/security features and OnStar. I pull a 30 foot 5th wheel, (about 11000 pounds) and have been very impressed with the trucks ability and ease of maneuverability. I regret I didnt wait for a DuraMax, but Im getting along fine without it.

• 

  Big Red - 2001 GMC Sierra 2500HD
  By Tanns - May 22 - 8:30 am

  My 2001 is a real pleasure to drive, getting 15mph on highways, always used regular gasoline. It performs well in the snow and Im sold on Allison transmissions.

• 

  One helluva truck! - 2001 GMC Sierra 2500HD
  By HarleyNut - September 19 - 10:00 am

  My overall experience has been great! The only problem that I have had in the last 2 1/2 years is the driver side mirror defroster died and had to be fixed. No major mechanical problems and I think it is a comfortable full size truck to drive.

• 

  Love my truck! - 2001 GMC Sierra 2500HD
  By aktantan - May 30 - 2:00 am

  I have had both Ford and Chevy trucks in the past and this is far superior. The ride is a bit more rough than my Chevy 1500, but it is more heavy duty and simply does more. The power is great and the Allison transmission makes it a dream to drive in the Rocky Mountains where we live.

• 

  Not Professional Grade - 2001 GMC Sierra 2500HD
  By Bigfins - January 24 - 10:00 am

  The 6.0 engine knocks a little until warm...other than that its ok. Lacks real pulling power, even with a 410 rear end. Tranny went out at 9700 miles. Power window regulator at 37000 miles ($500), Rotors now acting up at 47000 (all of a sudden??) Pampered truck. Goes to FL with a light trailer and back annually, othewise no strain. Hauls nothing. Looks like the 8.1 and the Allison was the way to go. Ride was real choppy from day one. I mean bouncey on an uneven road! Hang on in the rear seat! GM should be able to do MUCH better than this. They say every HD truck is made for 200K...at what expense?

• 

  Tired of Engine Noise - 2001 GMC Sierra 2500HD
  By Mark Breneman - August 23 - 10:00 am

  As soon as I saw the HD crew cab, I knew that I wanted to own one. It only took a test drive to prove that to me. The truck drives like a half-ton yet easily handles a 12,000 lb trailer and tractor. The interior is very spacious and is comfortable even on long trips. If i had to do it over, I would buy the Duramax over the 6.0 or 8.1 liter. I have a 6.0 that started making alot of noise at 1100 miles. GM has yet to stand behind it 27,000 mile later. Fuel mileage is also not great - 13MPG/16MPG tops.