2011 GMC Sierra 2500HD Overview, Reviews, Ratings & Specs

My transmission started slipping around 150,000 miles. Don't believe transmission mechanic if they say nothing big is wrong. Do a fluid change and have them look for metal shavings.

I bought it brand new. Never have had any major issues with it. 140000 miles on it and it runs and drives like its new.

Does a great job towing! Has needed some repairs but nothing major and it is at 175000 miles and it shows no signs of slowing down. Suspension is a little stiff if you are driving around unloaded but once it has a trailer hooked up it rides great. One of the better vehicles I have ever owned.

Yes, I recommend the Sierra 2500 HD. My '07 Ext. Cab, LWB, WT was great. In 98k miles only had to replace a faulty plug wire, she returned about 17mpg highway & 13 city. Traded her for a identical new 2011with Eaton 3:73 gas 6.0. Both trucks pulled a 6k lb trailer daily. As with the '07, only repairs were the wear items. But at 112k miles small problems developed; cracked exhaust manifold, a bent from the factory hydroboost tube rusted & leaked, EVAP box needs replaced, rear carrier cracked, all forward transmission rings lost there friction material, it was a expensive hit, for the last two problems were 9 months apart. This truck has paid for three trucks. Both trucks handle like on rails and nothing rides more confidently down the road. I'll probably keep this truck until I die.

Great truck never had any issues yet at 155k powerful Diesel engine and fully loaded for the year great durable truck. This truck has never had any major mechanical issues great luxury seats with heated and cooled seats and has lots of power to pull my trailer

I really love my 2011 GMC sierra 2500hd it has everything you need in a truck. It has a lot of room in the cab everybody is very comfortable. It has a sunroof that is nice. The engine is very powerful there is never a time that I do not think the truck lacks power. There is plenty of room in the bed to get whatever you need moved or hauled that this truck can do. It can also pull very good it has the duramax engine with the Allison transmission. Everything works well the radio is nice and loud and the ac is cold. It has heated seats which really helps out.

I have only owned this truck for about 2 months now. Took it on a fun vacation with an overhead camper and it ran beautifully. I got around an average of 10mpg which is not ideal, but that's what you get when you have a gas engine in a 3/4 ton truck. Very comfortable ride!

I love my truck. It performs exactly the I want it to. It has lots of power. It has a glow-plug issue right now but can be easily fixed with money and time. Does not affect its driving or running. It is a very nice ride for being a full sized truck. Very comfortable that we can take it on a long trip.