2015 GMC Sierra 2500HD Research & Reviews

Overview & Reviews

Average Score

3.29/5 Average
7 Total Reviews
This Year's Model Updates:

Redesigned for 2015, the GMC Sierra 2500HD offers an improved interior, updated styling, new safety features and a new double-cab body style.

  • Strong diesel engine
  • Impressive hauling and towing capabilities
  • Solid build quality.
  • Available CNG fueling for regular V8
  • Carries on predecessor's refined and quiet ride
  • Touchscreen interface can be slow to respond
  • Telescoping steering column not available on base model.

User Reviews:

Showing 1 through 7 of 7.00
  • 2015 Sierra HD diesel - 2015 GMC Sierra 2500HD
    By -

    So, yes. The SD card reader is pretty much useless. But all of the storage is amazing. The 6.6 is amazing along with the Allison transmission. I'm getting 17 in town and 20-21 on highway. Towing my tractor around is a breeze almost forget it's behind me. I did read the other reviews and the gap at the tailgate is real, and it does let a lot of dust in, However you can buy a seal kit for it. The safety features are cool. With the vibrating seats, lane departure detection, and back up camera, if you crash and it's your fault. It is actually your fault. bottom line I've owned a lot of vehicles, other than a minivan which I haven't owned but have been in and was amazed at the comfort and room this is the best and most useful vehicle you can get.

  • Can't drive at night - 2015 GMC Sierra 2500HD
    By -

    Well folks I'm back we've been to the dealer 4 times the headlights are terrible . I asked the service manager to load his family up and take it for a spin as I hate to drive at night . The headlights are only producing 1250 lumens when they should be 2500 to allow for proper visual at night . Please give this vehicle a drive at night and try to turn onto a side road make sure you have the salesman in the passenger seat !!!!.

  • Duramax! - 2015 GMC Sierra 2500HD
    By -

    There is no drop-down option for the Duramax Diesel version. Traded in a 2014 Denali 1500 for the big boy. I love this truck. No car/truck is perfect but the Duramax is the best Diesel engine on the road IMO. Sometimes the radio is quirky when plugging in my iphone so I just stream over bluetooth. I've noticed that the power steering takes more arm strength when maneuvering tight spots, more-so than other truck brands. The headlights are a less than great and should be recalled. I am hoping the new headlights that come on the 2016s will be interchangeable. I love my truck. It turns a lot of heads.. especially mine!

  • Poor Quality Truck - 2015 GMC Sierra 2500HD
    By -

    The day I brought the truck home I noticed that the heater would not change from defrost.Then after a couple of weeks water leaked on drivers side front and back.All carpet had to be replaced.Then water leaked on passenger side.The truck has 3100 miles on it and has been in the shop 16 days.Im wondering what will be next.Its obvious GM dosent build a quality truck any more.

  • Great Diesel Truck - 2015 GMC Sierra 2500HD
    By -

    Bought this SLT model after trading in a 13 2500 HD Denali. Needed to pull a 16000 lb Fiver camper. This Pickup has extreme power and smooth shifting. Thought about getting a single rear tire toner till I realized the only difference was an extra leaf spring is all. I had automatic step sides that come down when you open the door and that made access in and out easy even the wife enjoys it. I have 13000 on it now. I guess I don't see any issue with the headlights seem the same although I did notice at the parts counter upgraded bulbs on the counter so maybe that fixed the issue. I especially like the bright lights in the side mirrors for backing up at night. No problems with the leather or accessories, I did get extended warranty just in case. mileage varies about 8 mph pulling the camper and 17 mpg on the highway not pulling town about 15. Seems like a great pickup more to come.

  • Looks great till you start looking - 2015 GMC Sierra 2500HD
    By -

    I was coming back to the GMC family after spending 10 years with a Toyota Tundra !!!! Well first the headlights at night a terrible you better test drive it at night ?? Second the gas mileage is almost ridiculous, the tailgate doesn't fit properly it has a gap on the sides and everything gets dusty as I have a custom ARE topper . The sunglasses holder has to be for reading glasses as nothing fits . The seat will be wore out in 10 years as the leather is of poor quality. The SD car reader slot doesn't allow you to read trail camera photos?? This vehicle was designed for a person that wants to drive a truck not a real outdoorsman that would enjoy the usefull features we need and would use .

  • GM Quality - 2015 GMC Sierra 2500HD
    By -

    only 1700 miles on the truck and had it in the dealer twice for an oil leak. The oil pan has surface cracking, apparently acceptable to GM as it is on every truck. The wax coating on the frame can be easily removed by a fingernail and already has rust coming through mainly on the joints as if it was not applied properly or the coating method is simply insufficient. I actually bought 2 of these trucks and both have had paint issues. the 1st truck had the 3.73 axle, which has a poor tow rating of only 9200 pounds or so. this information cannot be found on the website and the website shows you cant even get the 3.73 with the gas engine. sunglasses holder is oddly shaped and won't fit regular sunglasses. the manual shift mode doesn't allow you to shift up when coasting downhill or something. the truck always seams to be down one gear lower than it should be when coasting and tow mode is off. the passenger tow mirror is very poor for visibility and doesn't show the side of my trailer as my f150 did. the led lighting is cool but there are wires that can get snagged under the bed rails. ride is more firm than previous models which I like. Ipod playback is horrible. very slow to respond and often doesn't work at all. dealer said it works fine. air conditioner lowers for phone calls which is cool. towing uphill isn't very good. the truck bounces between 2 gears, one which is excessively high and the other is to low to maintain speed.

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