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2012 GMC Sierra 3500 HD Regular Cab

Overview
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2012 GMC Sierra 3500 HD Regular Cab Review

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KBB Expert Rating: 7.5

Although many people consider GMC and Chevrolet's trucks to be interchangeable, GMC has been working hard to establish its own identity, something the company likes to call "professional grade." The 2012 GMC Sierra Heavy Duty (HD) trucks are a good example of this new image, sharing almost all of their parts with the Chevrolet Silverado HD trucks, but adding more upscale features such as the Denali trim line, which has no equal on the Chevy side. The 2012 Sierra HD trucks are a powerful lineup of 3/4-ton and 1-ton models, made all the better by last year's improvements to the frame, suspension and Duramax diesel engine. And, while the 2012 GMC Sierra HD trucks are not the most powerful in the segment, they do take top honors for fifth-wheel and conventional towing, as well as payload.

You'll Like This Car If...

If you're a GMC loyalist, the 2012 GMC Sierra HD truck line is bound to keep you coming back for more. Those who worry about dirtying up the inside of their truck will appreciate the heavily vinyl trappings of the Work Truck line.

You May Not Like This Car If...

Although both the Ram HD and Ford Super Duty trucks look nearly identical on paper, the two competitors offer bolder styling and more upscale editions than does the 2012 GMC Sierra HD line.

What's New for 2012

The 2012 GMC Sierra HD sees a few improvements for this model year. A new hard-drive navigation radio is offered, while Work Truck models gain cruise control and lockable spare tire. Denali trims gain as standard equipment heated and cooling front seats, a heated steering wheel, a rearview camera and, on 3500 dually models, 17-inch polished wheels.

Driving the Sierra 3500 HD Regular Cab

Driving Impressions Thanks to its torque-heavy 6.6-liter Duramax turbodiesel V8, we found that towing a 10,000-pound trailer behind the 2012 GMC Sierra 2500 HD truck posed absolutely no challenge whatsoever. The 2012...

GMC HD's available Duramax turbodiesel develops 397 horsepower and 765 pound-feet of torque (that's more horsepower but less torque than the Ram HD, and less horsepower and torque than the Ford PowerStroke diesel). Despite the difference in power from its main rivals, the Sierra HD still takes top honors in fifth-wheel and conventional towing, as well as payload figures. The Duramax diesel is a bit loud, but you wouldn't know it from inside the passenger compartment. One of our favorite features on the diesel truck is the "smart" exhaust-braking setup. The system works by progressively restricting the diesel's exhaust, depending on speed and grade, to help slow the rig with added compression braking. We tested a number of 2012 GMC Sierra HD trucks, with gasoline and diesel engines, long and short beds, and basic to plush trim levels. We found all exhibited a firm suspension, good steering ability and fairly compliant ride.

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.

2012 GMC Sierra 3500 HD Regular Cab Details
Interior

The 2012 GMC Sierra HD Work Truck (WT), SLE and SLT interiors are designed to work in conjunction with the trucks' duties, yet are still nicely appointed and on Denali trims, downright opulent. While there are not as many storage bins and compartments as in the Ram and Ford HD trucks, the 2012 GMC Sierra HD nevertheless has a number of useful storage ideas for everything from laptops to the errant tool. The 2012 GMC Sierra HD truck's cab makes for the perfect mobile office, with such options as mobile Wi-Fi, Bluetooth and navigation, as well as SiriusXM NavTraffic updates and the OnStar suite of telematic aids. Denali models feature specific brushed-aluminum trim, heated and cooling 12-way power seats, power-adjustable pedals, and a Bose premium surround audio system.

Exterior

The 2012 GMC Sierra 2500 and 3500 HD trucks sport a large, 3-bar chrome grille resting atop a full-size chrome bumper to create as imposing a sight as you'll ever want see in your rearview mirror. The Sierra HD's massive power dome hood is decked out in powertrain badging and features functional louvers for better engine cooling. The upscale Denali trims can be spotted by their 4-bar mesh design grille and color-keyed bumpers fitted with a mesh-style lower air intake surrounding the front tow hooks. Other features unique to the Denali include chrome door handles and accents, and polished forged-aluminum wheels.

Notable Equipment
Standard Equipment

Four-wheel-disc brakes with ABS and Intelligent Brake Assist and a 6-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-dually) models, and a "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, cruise control, air conditioning, automatic headlights 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 GMC Sierra Work Trucks are 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 rearview camera, an integrated trailer-brake controller and pelvic/thorax and head-curtain airbags.

Under the Hood

The 2012 GMC Sierra HD features as standard a heavy-duty Vortec 6.0-liter gasoline V8 with a cast-iron block, aluminum heads and cam-in-block variable valve timing (VVT). The VVT system 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 2012 Duramax turbodiesel offers plentiful power and torque, improved strength and durability, and a "smart" exhaust braking with the Allison 1000 6-speed automatic transmission and full B20 biodiesel capability. Its NOx emissions are reduced by 63 percent via a Selective Catalyst Reduction after-treatment 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 @ 5,400 rpm
380 lb-ft of torque @ 4,200 rpm
EPA city/highway fuel economy: NA

6.6-liter turbodiesel V8
397 horsepower @ 3,000 rpm
765 lb-ft of torque @ 1,600 rpm
EPA city/highway fuel economy: NA

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2012 GMC Sierra 3500 Consumer Reviews

Overall Rating
8.9
Out of 10

Based on 777 Ratings for the 2007 - 2013 models.

Review this car
  • Value
    9.0/10
    Quality
    9.0/10
  • Reliability
    9.3/10
    Performance
    9.1/10
  • Comfort
    9.2/10
    Styling
    9.1/10

Best truck I have EVER owned.........love it!!

By on Saturday, June 13, 2015

I own this car - My approximate mileage is 30,000

10 10.0
overall rating 10 of 10rating details

Reviewer Ratings

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

Pros: "Just a GREAT truck"

Cons: "None"

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

"Smooth riding, plenty of power, turns on a dime ( unlike last truck) I pull a fairly heavy boat/ trailer, can't hardly tell it's behind me. Gas mileage is decent in the city and excellent on the highway. And with the flex fuel option, whenever gas gets expensive, I switch to good old "corn oil"......big savings! Best part........truck is gorgeous! Always get comments about what a " good looking truck I have" :)"

22 people out of 37 found this review helpful

This a good U S A product. Had it send new.

By on Tuesday, June 09, 2015

I own this car - My approximate mileage is 90,000

10 9.0
overall rating 9 of 10rating details

Reviewer Ratings

Overall Rating
9/10
Value
9/10
Reliability
10/10
Quality
7/10
Performance
9/10
Styling
7/10
Comfort
10/10

Pros: "very good truck for faimly fun"

Cons: "Need better seats cover.Seats too hard."

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

"About 5 years before changing a light. Did all the oil change and other maintence on the truck and never had any trouble out of it.4 years before change in battier. Still on its 2nd battier. I buying another one soon. This truck went hunting in the winter and pull a 18 ft bass boat every summer all summer."

4 people out of 8 found this review helpful

Mechanically, the best Vehicle Ive ever owned.

By on Saturday, May 30, 2015

I own this car - My approximate mileage is 220,000

10 9.0
overall rating 9 of 10rating details

Reviewer Ratings

Overall Rating
9/10
Value
10/10
Reliability
10/10
Quality
7/10
Performance
8/10
Styling
8/10
Comfort
7/10

Pros: "Very Reliable, Cheap to own, 6.0 indestructable"

Cons: "Bad on Gas, 14MPG with tail wind down hill"

Likely to recommend this car? (1-10): 9

"in 2009 I started as a Tech in the Oil Field, and was given this Truck with 40K miles on it (2007 NBS Sierra 2500HD EC LB 4x4 Z71) I Drove this Truck until 216k miles when they made me trade it in for a 2012 Sierra 2500HD, 2 yrs later they liquidated the Company trucks and I was able to purchase for less than half of Blue Book. Tody it has 220k on it and to this day its only had a Throttle body ($120 referb at Auto Parts) and the rear end rebuilt( my fault) Has never thrown a check engine light (apart from the Throttle body) has never failed to start, never left me stranded... id drive this truck from coast to coast and not think twice!!! Same cant be said for GM HDs 2011 and up, thier GM 6l90E Transmissions are Junk wouldnt touch with a 10Ft pole. After 220K miles the tuck does have some rattles... but i can live with that."

6 people out of 9 found this review helpful

great truck

By on Thursday, May 28, 2015

I own this car - My approximate mileage is 7,500

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
5/10

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

"the only thing wrong is the ride it rides like a truck lol but over all it is a great truck cant be beat in the snow of Vermont best truck I have ever owned"

5 people out of 8 found this review helpful

2009 1/2TON CREW CAB SLE Z71

By on Tuesday, May 19, 2015

I own this car - My approximate mileage is 80,000

10 8.0
overall rating 8 of 10rating details

Reviewer Ratings

Overall Rating
8/10
Value
9/10
Reliability
9/10
Quality
8/10
Performance
8/10
Styling
7/10
Comfort
7/10

Pros: "Hold value"

Cons: "Just an SLE nothing fancy."

Likely to recommend this car? (1-10): 8

"Good reliable truck. Only problems was rear passenger window seal leaks and lets water inside door when rains heavy, doesn't seem to affect electronic windows and locks. Drivers door pin is getting bad. Door trim is falling off, only 2 sided taped on. Burried the truck a few times in snow and ice and busted up plastic below bumper(bad design for off road use). Never lets me down and average 18MPG. Wife has gotten as good as almost 22MPG. Pulling a 30 foot I get about 8 mpg."

3 people out of 5 found this review helpful

First truck owned...great for my family.

By on Wednesday, April 29, 2015

I own this car - My approximate mileage is 86,200

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

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

"Many road trips with plenty of cab/cargo space. Spent dozens of weekends in the mountains towing our three ATV s up there to ride and camp with no problem!"

8 people out of 13 found this review helpful

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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

Buying this car?