2015 GMC Sierra 2500HD | Read Owner Reviews, Prices, Specs

Crash Test Rating

Source NHTSA

MPG (up to)

City / HWY

Source FuelEconomy.gov

Horsepower

322 -397

Seats

5 -6

Positive Owner Reviews

Joseph L

Power and dependability. The truck is good for towing large tows.

Hard to see outside of the window, visibility could be better. Plenty of power and good gas mileage. This vehicle is good for towing large tow packages. Again with the dashboard, I felt as though it rides a little too high. Seeing your surroundings is very important when using a work truck like mine and I wish that that area could be better improved.

Lisa a

It is very comfortable for long distance travel.

I love the comfortable seats, and ride. The dash is easy to navigate. It has enough seats for all of us to go together in one vehicle.

Russell S

GMC 2500HD has the power and comfort

I love the comfort of the truck. I like the dash cluster and the radio touch screen. You can control everything on the steering wheel. The only thing I don't like is the passenger seat is not electric. The 4 wheel drive works extremely well and kicks in almost as soon as the switch is turned. The 6.6 duramax lml has plenty of power for pulling and the truck has plenty room in the back for kids.

Carol S

Dependability and looks. Bad gas mileage.

I have no complaints about my truck. It has plenty of extra features and the GPS is a great asset to have. I wish that the truck got better gas mileage because it gets only 13 miles to the gallon and when pulling a trailer it is about half that. So far the truck has given me no problems and the dealer is fantastic to work with. I will definitely be buying another GMC 2500 pick up.

Nick J

I have a 2017 GMC Sierra Denali duramax

I love how nice and quiet the ride is on any road surface and the way the cab is sealed is amazing. I would highly recommend anyone buy a Denali if they have the chance. Also I wouldn't recommend a black I would go with the maroon or white if I had to do it again

Brent H

I have done that out need to look at it again just by one.

It's the best truck out there. If you do not have one go buy one. It's diesel very quiet when I need power it is there it pulls a fifth wheel there no problem the four wheel drive is awesome just turn switch pops right have not had in mountains but on slick roads it does very well.

Trever V

The best truck to buy in my opinion.

My GMC has not let me down once I have put it to the test time and time again and it gets the job done every time. With the Denali package it is a luxury ride on the inside and everything a person needs in a work truck and a family car. In my opinion the GMC Denali is the greatest truck.

HELEN S

The ride is great< plenty of room in back

It IS winter white EXTENDED CAB COMFORT IS GREAT WISH BACK SEAT WAS MORE COMFORTABLE , NEED TO HAVE MORE AIR IN BACK SEAT

Negative Owner Reviews

Nathan C

Great truck for work or projects

Great work vehicle. Gets the job done on site and down the road. Not bad on fuel either. Has the four full doors which is very convenient for work projects and hauling crew members. Definitely a good on site truck as well as everyday driver. Seems to be holding up well even at higher mileage

Moe M

Transmission issues without warning.

We just 90000 and the transmission went out costing a large amount. Other than that it's been great. It didn't give us much notice, nothing started acting up or driving differently, the check engine light came on and went off. We were told it was probably just a little fluke then when the weather started heating up it started running hot and the transmission hot warnings came on and that was it.

Sharon C

Overall a good truck! Have had it almost five years and no problems.

Overall it is a good truck. Had no problems with it. Just regular maintenance. Just tired of driving such a large vehicle. I find parking spots are smaller now and fitting a large truck in them is difficult. Also my backup camera had a noise when I was close to something.

GMC Sierra 2500HD Models

Models also known as Trim Levels, are used to identify a vehicle's level of equipment or special features.

Base

322-397 HP 5-6 Seats

SLE

322-397 HP 5-6 Seats

SLT

322-397 HP 5-6 Seats

Denali

322-397 HP 5 Seats

Photos may not match model

2015 GMC Sierra 2500HD Owner Reviews

4.68

34 Reviews

Write Review

5 stars

76%

4 stars

15%

3 stars

9%

2 stars

0%

1 star

0%

Casey H on June 12, 2021

Truck drives well and is very comfortable to ride in.

I love my GMC 2500. The only thing I do not like about it is it did not come with tow mirrors, therefore I cannot see while pulling a trailer. The truck has a lot of power while pulling a trailer. It gets good fuel mileage and drives great. It sits very comfortably as well.

Anna S on May 10, 2021

Beautiful and reliable truck.

I have no issues at all with this truck. It pulls anything we want to pull with no hesitation. We love the leather seats and the back seat folds up for more space. The design of the truck is beautiful. Overall it is a gorgeous truck that is very reliable.

View All Reviews (34)

Pros from Owners

Shawn H.

The truck is quiet and comfortable to ride. Has really good gas mileage compared to other diesel engines and is extremely reliable. My truck has 150000 miles and has had no issues with the truck so far.

Cons from Owners

Shawn H.

As of right now the only son of my truck is the fact of the emissions equipment is expensive to maintain and needs constant cleaning and maintenance to keep it working properly. The other complaint is that big of a deal leather interior easy to get clogged in the vent holes and requires regular vacuuming.

Ranks #4 Full Size Pickup Trucks by Owners

The 2015 GMC Sierra 2500HD has an average owner rating of 4.68 out of 5 which ranks it #4 of 14 other Full Size Pickup Trucks.

1

2015 Chevrolet Silverado 3500HD

4.81

2

2015 Toyota Tundra

4.75

3

2015 Ram 2500

4.72

4

2015 GMC Sierra 2500HD

4.68

Frequently Asked Questions

Why is my 2015 GMC Sierra touch screen not working?

Answer: If the touch screen is not working in Your 2015 GMC Sierra the first thing that You should do is try to reset the system. The most likely reason that it is not working is due to a software problem that has...

Why are my 2015 GMC Sierra headlights not working?

Answer: If Your headlights in the 2015 GMC Sierra are not working it could be several different reasons. Some of the common issues are a bad relay, blown bulb or fuse, or a damaged wire / corroded ground. You will have...

What's the 2015 GMC Sierra 2500HD horn location?

Answer: The 2015 GMC Sierra 2500 HD has it's horn under the hood in the engine compartment; it's usually on the driver's side, behind the bumper cover, below the headlights. The part is going to look like a round...

What's the 2015 GMC Sierra 2500HD Diesel oil capacity?

Answer: The oil capacity of the GMC Sierra 2500 HD diesel variant iS-10 quarts. Oil plays a crucial role in the protection of the engine parts from damage due to wear and tear, and also keeps the engine performing...

See all Frequently Asked Questions

Answers are provided by third parties. We do not guarantee accuracy of responses

Safety & Reliability

NHTSA Crash Test

Overall

Front

Rollover

Side

*National Highway Traffic Safety Administration

IIHS Crash Test

(Not Tested)

*Insurance Institute for Highway Safety

2015 GMC Sierra 2500HD Overview, Reviews, Ratings & Specs

Positive Owner Reviews

Negative Owner Reviews

GMC Sierra 2500HD Models

2015 GMC Sierra 2500HD Owner Reviews

Pros from Owners

Cons from Owners

Ranks #4 Full Size Pickup Trucks by Owners

Frequently Asked Questions

Safety & Reliability