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  No styling changes of note are expected for the 2011 GMC Sierra 1500. Its bold, GMC-badged grille will again be the main visual distinction from the Chevy Silverado 1500. Additional GMC insignia inside and out, cabin trim details, and GMC-specific model designations round out the differences. Though non-functional, such distinctions are part of a GMC marketing philosophy that pays off with a buyer base that’s more affluent, more educated, and more likely to be professional or managerial than Silverado’s. The 2011 Sierra’s overall look is handsome and confident, despite being around since model-year 2007. Offering newer styling and fresher features is the rival Ford F-150, which was re-engineered for model-year 2009, and the Dodge Ram 1500, which was fully redesigned for 2009.
INTERIOR
The 2011 GMC Sierra 1500 Crew Cab comes in a single body style of a half ton full size truck, and comes only with a short 5-foot-8 bed. The Sierra 1500 Crew Cab comes in a nicely appointed SLT trim and an SL trim, which fits in between the SLE and Work models, and so is the case with the range-topping Denali.

The standard equipments for the SL trim of the Sierra 1500 crew cab includes just the bare necessities, including air-conditioning, a 40/20/40-split front bench seat OnStar telematics, a CD/MP3 stereo having satellite radio, an auxiliary audio jack and a trip computer, vinyl seat upholstery, a tilt steering wheel. In addition to all this the SL trim gets complete power accessories, cruise control, keyless entry, adaptable lumbar support for its driver and satellite radio.

The premium SLT trim will get you features such as premium cloth seat upholstery, a lockable section having a power outlet urbanized into the split front seat’s center cushion, a leather-swathed steering wheel and an auto-dimming rearview mirror. Some other features for the SLT includes a premium interior having a completely upgraded materials and center console, chrome-clad alloy wheels, leather seat upholstery, a Bose audio system having a 6 disc CD changer, an exclusive dash design having metallic and wood accents, remote engine start, 12 way power heated/adjustable rear audio controls and front seats.
EXTERIOR
There are the five unique cab layout / box length combinations. The Regular cab is available with a long box only, the Extended cab adds a standard box option, and the conventionally-hinged four-door Crew cab also offers both. Maximum payload capacities are the same regardless of engine choice, at 4,192 lbs in the Regular cab 2WD model. Opting for 4WD decreases the capacity to 3,580 lbs in the same truck.

The iconic Denali four-bar, chrome grille with round air inlets distinguishes the Sierra Denali HDs on the outside, along with body-color bumpers, chrome door handles, chrome accents and 17- (Dually), 18- and 20-inch polished forged aluminum wheels. On the inside they include Denali-specific brushed aluminum trim, power-adjustable pedals, a Bose premium surround audio system and 12-way power seats. Along with an optional heated steering wheel, heated and cooled leather-appointed seating is available. The exterior is offered in three colors: Black, Stealth Gray and White. 

ENGINE

 Luckily, GM’s done a good job managing the technology gap between its big-pickups and their rivals. In fact, only Sierra and Silverado offer a gas-electric hybrid powertrain. And their conventional engines are very competitive in power and fuel economy. The GMC Sierra engine lineup expects to repeat for 2011 with a base V-6 and four V-8s. The V-6 will likely retain a 195-horsepower rating, while the entry-level 4.8-liter V-8 returns with 302; both these engines use a four-speed automatic transmission. Also expected to return is the 315-horsepower 5.3-liter V-8 and the top-of-the-line 403-horsepower 6.2-liter V-8, both of which use a six-speed automatic. The 5.3 V-8 has GM’s Active Fuel Management system that conserves fuel by automatically switching between eight and four cylinders, depending on power demands. The 2011 Sierra 1500’s maximum trailer capacity won’t differ much from 2010’s mark of 10,600 pounds (obtained on the crew cab with the 6.2-liter V-8 and optional towing package). Like every other big pickup, Sierra’s built on a rear-wheel drive platform, but it alone offers three alternatives: part-time four-wheel drive (4WD) not designed for use on dry pavement, GM’s Autotrac 4WD that can remain engaged on all surfaces, and exclusive all-wheel drive available in the Sierra Denali. The 4WD systems include low-range gearing. The Sierra Hybrid combines a 6.0-liter V-8 with electric motors imbedded in the transmission casing. Total system horsepower is 332 and it self-charges the nickel-metal hydride battery pack. The Sierra Hybrid can reach 30 mph on electricity alone. Its V-8 employs Active Fuel Management and the electric motors extended its time in gas-saving four-cylinder mode and also provide a power boost during acceleration. The Sierra Hybrid has a continuously variable transmission and is available with two- or four-wheel drive; its towing capacity is 6,100 pounds.
 Safety:

The safety equipments for the 2011 GMC Sierra 1500 Crew Cab includes equipments such as includes stability control, antilock brakes, side, side curtain and front airbags are also standard on these trucks. You can get four-wheel disc brakes as well if you go for Max Trailering package.
Verdict:

So finally we would like to say that the 2011 GMC Sierra 1500 Crew Cab is a potent competitor for its fresh rivals and comes into the market with a wide range of capable performance, a contented ride and body styles.
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