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The 40 mpg Cars of 2013

2011 GMC Sierra 2500 HD Extended Cab

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Curious about the newer model? Check out the 2013 GMC Sierra 2500 HD Extended Cab

Overview

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2011 GMC Sierra 2500 HD Extended Cab Review

By KBB.com Editors

GMC's Sierra 2500HD and 3500HD heavy-duty pickups don't look much different from the 2010s they replace, yet they're substantially upgraded and improved for 2011, and new top-of-the-line Denali models blend premium luxury and rugged, heavy-duty work truck capabilities. Most of the available investment budget went into all-new frames (much stiffer and stronger fully-boxed, high-strength steel) and suspensions (25 percent higher-load-rated independent front, asymmetrical leaf-spring rear) and the new Duramax turbo diesel V8/Allison 1000 six-speed automatic transmission powertrain. They boast an impressive array of segment bests, beginning with that new Duramax diesel, which is not only more powerful but also 11 percent more fuel efficient than its predecessor.

You'll Like This Car If...

If you are a satisfied past or current Sierra HD owner, you will love these much-improved new ones despite their mostly carryover styling. Their performance, capabilities, refinement and fuel efficiency have improved, especially with their new and surprisingly quiet available Duramax turbo diesel V8.

You May Not Like This Car If...

If you are a loyal and satisfied Ford or Dodge (now Ram) HD pickup owner, you may not find sufficient reason to switch to a new GMC. The Ram was new for 2010, the F-250/350 for 2011, and both are fully competitive in most areas.

What's New for 2011

The 2011 GMC Sierra HD's Duramax turbo diesel's power, torque, maximum conventional and fifth-wheel tow and payload ratings are best in class. Its fifth-wheel tow capability is 21,700 pounds, it can tow up to a 17,000-pound conventional load with its factory-installed hitch, and the Duramax is fully B20 biodiesel compatible.

Driving the Sierra 2500 HD Extended Cab

Driving Impressions We found towing a 9,500-pound trailer with a 2011 3500HD relatively easy due largely to its new 6.6-liter Duramax diesel V8 and Allison transmission powertrain. Its massive (segment-best) 765 pound-feet...

of torque got that hefty rig rolling with ease, and its (segment-best) 397 hard-muscled horses kept it moving surprisingly smoothly and quietly. The ambience inside its nicely-appointed cabin was a pleasant surprise – so quiet at any speed that we could easily chat with passengers in the crew-cab's back seat. Another plus is the highly-effective, engine compression-assisted brakes. New for 2011 is "smart" exhaust braking that progressively restricts the diesel's exhaust, depending on speed and grade, to help slow the rig with added compression braking – especially useful on downhill grades. Other Sierra HDs we have sampled also showed marked improvements in ride, handling, steering and brake feel due mostly to their new, much stiffer frames and redesigned suspensions.

Favorite Features

Exhaust braking
This system progressively restricts the diesel's exhaust – depending on speed and grade – to help slow the rig with added compression braking.

Remote starting
A favorite on any vehicle, this available feature is much appreciated on working trucks that operate in hot and cold weather extremes.

2011 GMC Sierra 2500 HD Extended Cab Details

Interior

The 2011 Sierra HD Work Truck (WT), SLE and SLT interiors are little changed in appearance but more refined in quietness and crafstmanship. A variety of useful compartments provides out-of-sight storage for everything from work gloves to laptops. With mobile WiFi, USB and Bluetooth connectivity, XM Satellite Radio and navigation, plus multiple charge points for multiple devices, these new trucks can be highly capable mobile workplaces. Denali models feature specific brushed-aluminum trim, power-adjustable pedals, a Bose premium surround audio system and 12-way power seats.

Exterior

2011 Sierra 2500HD and 3500HD models sport new a three-bar grille, a full-width chrome steel front bumper and a new louvered, powertrain-badged power-dome hood. A new lineup of 17- (dually), 18- and 20-inch wheel/tire combinations is available. Luxury Denali models are distinguished by a specific four-bar chrome grille with round air inlets, plus body-color bumpers, chrome door handles, chrome accents and polished forged aluminum wheels.

Notable Equipment

Standard Equipment

Four-wheel-disc brakes with ABS and Intelligent Brake Assist and six-speed automatic transmission are standard on all models, while StabiliTrak electronic stability control, Trailer Sway Control and Hill Start Assist (but not Hill Descent Control) are standard on single-rear-wheel (non-dualie) models and new "Smart" Exhaust Braking comes with the available Duramax Diesel. Also standard are chrome front and rear bumpers, engine and transmission oil coolers, a driver information center, tilt steering wheel, automatic headlamps and front tow hooks. Standard safety features include front-seat airbags and a new high-strength tubular steel frame crossmember that improves crashworthiness.

Optional Equipment

Optional (or unavailable) on base 2WD Work Trucks are cruise control, power locks, windows and mirrors and a rear window defroster. The next-level SLE trim provides those plus remote keyless entry, OnStar, XM Satellite Radio, and a CD player, but not the rear-window defroster. The top-of-the-line SLT trim (available on Extended and Crew Cab models) adds leather, power seats and much more, while Denali models are fully loaded. Option packages are available, and other major options include navigation, a CD changer, a rear-seat DVD entertainment system, remote start, premium wheels, a sunroof, a rear backup camera, an integrated trailer brake controller and pelvic/thorax and head-curtain airbags.

Under the Hood

The standard heavy-duty Vortec 6.0-liter gasoline V8 has a cast-iron block, aluminum heads and cam-in-block variable valve timing (VVT), which allows the engine to use late intake valve closing to improve efficiency and achieve an optimal balance of low-rpm torque and free-breathing, high-rpm horsepower. The 2011 Duramax turbo diesel offers significantly more power and torque, 11 percent better fuel efficiency, 30 percent less engine noise, improved strength and durability, new "smart" exhaust braking with the Allison 1000 six-speed automatic transmission and full B20 biodiesel capability. Its NOx emissions are reduced by some 63 percent via a Selective Catalyst Reduction aftertreatment system that uses urea-based Diesel (Emission) Exhaust Fluid (DEF) in a 5.3-gallon tank that needs to be replenished about every 5,000 miles.

6.0-liter V8
360 horsepower @ 5400 rpm
380 lb.-ft. of torque @ 4200 rpm
EPA city/highway fuel economy: N/A

6.6-liter diesel V8
397 horsepower @ 3000 rpm
765 lb.-ft. of torque @ 1600 rpm
EPA city/highway fuel economy: N/A

To compare current market prices, check out KBB.com's car classifieds to view the new and used GMC Sierra 2500 HD Extended Cab vehicles for sale near you.

Trading in or Selling? Know where you stand with the most up-to-date Kelley Blue Book Value at your fingertips. See your car's value

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2011 GMC Sierra 2500 Consumer Reviews

Overall Rating

8.9

Out of 10

Based on 665 Ratings for the 2007 - 2013 models.

Review this car

Value

9.0/10

Quality

9.0/10
Reliability

9.3/10

Performance

9.2/10
Comfort

9.2/10

Styling

9.1/10

drive line slack

By shorthand (MS) on Saturday, May 18, 2013

I own this car - My approximate mileage is 3,000

10 3.0

overall rating 3 of 10rating details

Reviewer Ratings

Overall Rating: 3/10
Value: Not Rated
Reliability: Not Rated
Quality: Not Rated
Performance: Not Rated
Styling: Not Rated
Comfort: Not Rated

Pros: "Happy with truck except for above problem"

Cons: "problem has not been resolved"

Likely to recommend this car? (1-10): 1

"The truck has slack in the drive train. It is more noticeable in stop and go traffic, and when you turn to the right you can hear a clunk noise as the slack comes out of the drive line. I took the truck back to the dearlership and was told by the technician that I was not the only one who had this same problem. According to GM and the dealership the solution was for me to change my driving habits."

1 person out of 1 found this review helpful

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Best value for the money.

By Rodney20 (PA) on Wednesday, April 24, 2013

I own this car - My approximate mileage is 70,000

10 10.0

overall rating 10 of 10rating details

Reviewer Ratings

Overall Rating: 10/10
Value: 10/10
Reliability: 10/10
Quality: 10/10
Performance: 10/10
Styling: 9/10
Comfort: 10/10

Pros: "Value, classic looks, low ownership cost, reliable"

Cons: "interior styling lags behind Ford F150"

Likely to recommend this car? (1-10): 10

"Other than the interior styling (which I think Ford is light-years ahead of all other manufacturers), I have absolutely no gripes about this truck. I test drove the F150, Titan, Ram, and Tundra. The only truck I imediately nixed after driving was the Tundra (after driving the Tundra, I was completely disappointed and cannot understand the infatuation Toyota loyalists have with that truck...way over-hyped and over-priced, and if you don't believe me, drive one and then drive/price any of the other four...unless you are a Toyota apologist, you will be disappointed). The only truck that I actually liked better than the Sierra was the F150. However, considering I could get a comparably equipped Sierra for a few thousand $$ less, the Sierra was definitely the better value. So far, I've had absolutely no problems...even the original tires lasted over 60,000 miles. My family has owned a number of different makes and models of vehicles in the past, including Chevy, Ford, Dodge, Honda, Toyota, Hyundai. A client of mine encouraged me to check out GMC, as he runs GMC's for his business and routinely gets 300,000+ miles out of his work pick-ups. Definitely glad I did check out the Sierra. One of the best vehicles (car/truck/van) I have ever owned. Will definitely buy again if I can get another reasonable deal."

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Poor performance and fuel mileage.

By LL (TX) on Wednesday, April 24, 2013

I own this car - My approximate mileage is 13,000

10 2.0

overall rating 2 of 10rating details

Reviewer Ratings

Overall Rating: 2/10
Value: 2/10
Reliability: 2/10
Quality: 1/10
Performance: 1/10
Styling: 7/10
Comfort: 5/10

Likely to recommend this car? (1-10): 1

"Lost 6mpg as compared to 2007 model equiped same. Extremely low oil pressure. Excessive tire wear and vibration thru out vehicle. DEALER SAYS JUST DRIVE IT."

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I own a 2013-no real changes from 2012

By SanJuanWilly (CO) on Tuesday, April 09, 2013

I own this car - My approximate mileage is 1,400

10 10.0

overall rating 10 of 10rating details

Reviewer Ratings

Overall Rating: 10/10
Value: 10/10
Reliability: 10/10
Quality: 10/10
Performance: 10/10
Styling: 9/10
Comfort: 10/10

Pros: "Plenty of horsepower and torque"

Cons: "sits up rather high"

Likely to recommend this car? (1-10): 10

"I love this truck. I think its only drawback is that it sits up rather high. I think it could be a little lower to the ground. Mine is a 2013 SLT crew cab regular box Duramax 4 wheel drive. Plenty of power to pull our 29 1/2 ft fifth wheel. I love driving this rig, and plan on keeping it for quite a while (I still have my 2002 Duramax with 275000 miles as a work vehicle) I would recommend this truck to anyone who tows a trailer."

2 people out of 2 found this review helpful

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Best truck value there is!

By Or Vett 50 (OR) on Sunday, March 31, 2013

I own this car - My approximate mileage is 54,000

10 10.0

overall rating 10 of 10rating details

Reviewer Ratings

Overall Rating: 10/10
Value: 10/10
Reliability: 10/10
Quality: 10/10
Performance: 10/10
Styling: 9/10
Comfort: 10/10

Pros: "Towing, reliability, durability, mileage, COMFORT"

Cons: "None"

Likely to recommend this car? (1-10): 10

"This truck was purchased to meet the following needs: - It had to tow an 8000# travel trailer in mountain terrain. - It had to have 4 wheel drive and off road capability. - It had to have enough back seat area for 4 dogs, 1 large, 1 medium and 2 small. - It had to be COMFORTABLE! I have a bad back and can't tolerate cheap seats. - Fuel mileage was secondary, but 19 mpg highway and 12 mpg towing is quite good. This truck has exceeded all my expectations. It tows a trailer effortlessly. It is driven in 4WD almost daily when I take my dogs to the beach. When driven on long trips, it is exceedingly comfortable, especially with the leather heated seats. I have ridden in many vehicles, some over $100K Europeans. None have as comfortable seats. It has had absolutely zero unscheduled maintenance. One of the best surprises was that it has only depreciated about $3000 from what I paid almost 4 years ago."

5 people out of 6 found this review helpful

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Best

By Dennis (NY) on Friday, March 22, 2013

I own this car - My approximate mileage is 2,169

10 10.0

overall rating 10 of 10rating details

Reviewer Ratings

Overall Rating: 10/10
Value: 10/10
Reliability: 10/10
Quality: 10/10
Performance: 10/10
Styling: 10/10
Comfort: 10/10

Pros: "Everthing"

Cons: "cant drive it 24X7"

Likely to recommend this car? (1-10): 10

"I have a SLT Z71 black on black loaded with lots extras she has the 5.3 V8 I am getting great MPG my average is 17.8 does it have a fault yeah it has a few have to reach to adjust the radio,the interior is a little dated but I look forward to driving this truck to work everyday"

2 people out of 3 found this review helpful

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See all 665 reviews