The 2007 GMC Sierra 1500 is a full-size pickup truck manufactured by General Motors. It is offered in 2-wheel drive (2WD) and 4-wheel drive (4WD) versions.

The Sierra 1500 is available in three body-styles: Regular Cab, Extended Cab, and Crew Cab, and three cargo box sizes: Short Box, Standard Box, and Long Box.

Regular Cab is available with the Standard Box and the Long Box. Extended Cab is available with all the three box sizes, while the Crew Cab comes only with the Short Box.

The Regular Cab is available in two trims: Work Truck and SLE1, while the Extended Cab as well as Crew Cab is available in four trim levels each: Work Truck, SLE1, SLE2, and SLT. All trims are available with different seating configurations.

The Sierra 1500 comes with a powertrain warranty for five years or 100,000 miles and bumper-to-bumper limited warranty for three years or 36,000 miles.

The Sierra 1500 competes with the likes of Ford F-150, Dodge Ram 1500, Nissan Titan, and Toyota Tundra.

With various configurations and trim levels, the Sierra 1500 offers a choice of four powerful engines. The Vortec 4.3-liter V-6 engine churns out 195 hp @ 4,600 rpm and 260 lb-ft. of torque @ 2,800 rpm. The Vortec 4.8-liter V-8 delivers a maximum power of 295 hp and torque of 305 lb-ft. The Vortec 5.3-liter V-8 engine issues up to 315 hp and 338 lb-ft. An ‘E85 flexible-fuel capability’ version of the Vortec 5.3-liter V-8 engine is also available, which gives the same output. The Vortec high-output 6.0-liter V-8 engine generates 367 hp of maximum power and 375 lb-ft. of maximum torque.

All trims come equipped with a standard electronically-controlled 4-speed automatic transmission with overdrive and tow/haul mode. However, the SLE1, SLE2, and SLT trims are also available with the option of a super duty 4-speed automatic transmission, but it can be linked only to the 6.0-liter V-8 engine.

The GMC Sierra 1500 looks stylish and strong. With a wheelbase ranging from 119 to 157.5 inches and length from 205.6 to 248.7 inches, it has a wide stance. Its front fascia is adorned by a large grille with the GMC insignia in its middle, prominent chrome bumper, and dual halogen composite headlamps, which include automatic lamp control. The Work Truck comes with a black grille surround, while the SLE1, SLE2, and SLT feature a chrome grille surround, which is optional on the Work Truck. Front halogen fog lamps are standard on the SLE1, SLE2, and SLT, and optional on the Work Truck.

The SLE1, SLE2, and SLT also come standard with body color body-side moldings. The Sierra 1500 comes with a pickup box in three sizes: Short Box, Standard Box, and Long Box, which measure 69.2, 78.7, and 97.6 inches respectively. All trims come standard with dual lamps in the cargo area. A cargo management system, including aluminum front and side C-channel rails located in the pickup box, is optional on all trim levels. Roof-mounted luggage rack side rails are also optional on all trims. Two frame-mounted, front recovery hooks are standard on SLE1, SLE2, and SLT trims and optional on Work Truck.

The Work Truck features manual, folding side-mirrors, while the SLE1 and SLE2 come with power heated, power-adjustable side mirrors with manual folding. However, the SLT comes with more convenient heated and power folding side mirrors, with light-sensitive auto dimming on the driver side, turn signal in glass and curb-tilt, which are optional on SLE2. The SLT comes with a heated windshield washer fluid system, which is optional on the SLE2. Rain-sensing front wipers are optional on the SLE2 and SLT trims of the Crew Cab models. All trims come standard with tail-gate protection.

The Work Truck wears standard 17-inch steel wheels, while the SLE1 models feature 17-inch chrome-styled steel wheels. The SLE2 models come standard with 17-inch aluminum wheels, including steel spare, which are optional on the SLE1 models. The SLT models come with 17-inch polished cast aluminum wheels, including steel spare. These wheels are also available on SLE models with Preferred Package. The SLE2 and SLT models also come with the option of 20-inch machined aluminum wheels. All 2WD models roll on standard P245/70R17 all-season, Blackwall tires, while the 4WD models ride on P265/70R17 all-season, Blackwall tires.

Some optional packages available on the Sierra 1500 include: EZ-Lift Tailgate Package, MAX Trailering Package, Suspension Package, Z71 Off-Road Package, SL Package, SLE/SLT Trailering Package, and Work Truck Trailering Package.

The Sierra 1500 comes with plush, comfortable interiors. The Work Truck can seat a maximum of three passengers, while the other trims can seat up to six passengers each.

The Work Truck and SLE1 come standard with a 40/20/40 split-bench front seat which can seat three passengers. This seat can be manually reclined and includes a center armrest with storage, which can be folded down. The Work Truck comes standard with a vinyl-trimmed front seat, while the SLE1 comes standard with cloth-trimmed front seat, optional on the Work Truck. The SLE2, however, comes with reclining bucket front seats, which include 6-way power seat-adjuster for the driver and passenger and adjustable outboard head restraints and storage pockets. These seats are available in a choice of premium cloth or leather. The SLT comes with leather-trimmed full-feature bucket front seats, including 12-way power seat-adjuster for the driver and passenger. The SLT also features heated cushion and back for the driver and passenger, 4-way power lumbar for driver and passenger, and 2-position driver-side memory. The Work Truck Extended Cab models feature a 3-passenger bench rear seat that can be folded. All trims come with a 3-passenger 60/40 folding bench rear seat, which can be folded up. However, it is not available on Regular Cab models or Extended Cab Work Truck models.

The Regular Cab SLE1, Extended Cab Work Truck and SLE1, and Crew Cab Work Truck and SLE1 come standard with manual, single-zone air-conditioning with front climate control. The SLE2 and SLT feature automatic, dual-zone air-conditioning with individual climate settings for driver and right front passenger. Dual-zone air-conditioning is optional on the SLE1. Power windows and power programmable door locks are standard on the SLE1, SLE2, and SLT. The Work Truck also comes with the option of power programmable door locks.

The SLE1, SLE2, and SLT come standard with a leather-wrapped steering wheel with theft-deterrent locking feature, while a tilt-adjustable steering column is present in all trims. The SLE2 and SLT have also got steering wheel-mounted radio controls, which are optional on SLE1. Steering wheel-mounted electronic cruise control with set and resume speed is a standard feature of SLE1, SLE2, and SLT, and is optional on the Work Truck. The SLE2 and SLT feature a floor console, which includes storage compartment and dual cup-holders.

All trims also come standard with a Driver Information Center. The Work Truck features a standard manual day/night inside rear-view mirror, while the SLE1, SLE2, and SLT come with a light-sensitive auto dimming inside rear-view mirror with an 8-point compass and outside temperature indicator. The SLE1, SLE2, and SLT are offered with an optional power-sliding rear window. An electric defogger on the rear-window is standard on SLE1, SLE2, and SLT, and optional on the Work Truck. It, however, is not available with the power-sliding rear window.

Dual 12-volt auxiliary power outlets are present in all trims. The SLE1, SLE2, and SLT are available with the option of power-adjustable pedals for accelerator and brake. The SLE1, SLE2, and SLT are available with the option of a power sunroof with Express-Open. This sunroof can be slid open at the push of a button and lets the sun, moon and air to filter into the cabin. The Work Truck features solar-ray light tinted glass on all windows, while the SLE1, SLE2, and SLT come with solar-ray deep tinted glass, which is optional on the Work Truck.

With a cargo capacity of 75.5 cubic-feet, the Sierra 1500 can easily hold large luggage or cargo items in its pickup bed. It can tow up to 10,500 pounds and handle a maximum payload of 2,160 pounds of cargo.

The Sierra 1500 comes with umpteen choices to keep you entertained on your drives. The Work Truck comes standard with an audio system, which includes AM/FM stereo, seek-and-scan and digital clock. It is also available with the option of an audio system with CD player including AM/FM stereo, seek-and-scan, digital clock and auto-tone control. The SLE1 and SLE2 come standard with an audio system with MP3 compatible CD player, which includes an AM/FM stereo, a seek-and-scan, a digital clock, and an auto-tone control, Radio Data System (RDS), and a speed-compensated volume control. Standard on SLT and optional on SLE1 and SLE2 is an audio system with MP3 compatible 6-disc in-dash CD player including an AM/FM stereo, seek-and-scan, digital clock and auto-tone control and RDS. The option of an audio system with MP3 compatible CD/DVD player, including an AM/FM stereo, seek-and-scan, digital clock and auto-tone control and RDS is available on the SLE2 and SLT. The SLT also has the option of an audio system with navigation, which includes an AM/FM stereo with MP3 compatible CD/DVD player, seek-and-scan, digital clock and auto-tone control, RDS, speed-compensated volume and TheftLock. All trims, with the exception of the Work Truck, are also available with the option of XM Satellite Radio. A Bose Premium Speaker System is standard on SLT and optional on SLE2.

The Sierra 1500 is available in 2WD and 4WD layouts. Both are equally capable on smooth roads. However, on slippery terrains, the 4WD offers enhanced traction to all the four wheels and reduces the risk of vehicle turn-over and skidding.

The GMC Sierra 1500 may be powered by any of the 4.3L V-6, 4.8L V-8, 5.3L V-8, or 6.0L V-8 engines, depending upon the trim level. All engines generate sufficient power, but it is the 6.0L V-8, the most robust of them all, that impresses with the delivery of 367 horsepower and excellent acceleration.

All V-8 engines strike a balance between the amount of power required and optimum fuel efficiency. Their Active Fuel Management technology uses only four cylinders in less demanding driving conditions and automatically shifts to eight cylinders, when required. The electronically controlled 4-speed automatic transmission with overdrive and tow/haul mode is also responsive and shifts smoothly.

The Sierra 1500 is maneuvered by a power rack and pinion steering, which offers crisp and prompt responses. It rides on an independent front suspension with coil-over-shock and a rear suspension with semi-elliptic 2-stage multi-leaf springs. This suspension irons out the bumps and irregularities on roads, and offers a breezy smooth ride. The Work Truck also comes equipped with a Solid Smooth Ride Suspension Package, which includes 35mm piston twin tube shocks. The SLE1, SLE2, and SLT come with a Handling/Trailering Suspension Package, including heavy-duty 46mm monotube shocks. This package is optional on the Work Truck.

The Sierra 1500 is equipped with 4-wheel anti-lock disc brakes in the front and drum brakes in the rear. These powerful brakes provide forceful stopping power to the wheels and stop the vehicle at a short distance.

A heavy-duty automatic locking rear differential is optional on the Sierra 1500. It evenly distributes power to both rear wheels in less-than-ideal traction conditions. At lower speeds, the differential automatically senses wheel spin, locks the rear axle, and transfers torque to the rear wheel with more traction, thereby helping the driver to handle slippery road conditions.

With a ground clearance of more than seven inches, the Sierra 1500 can be driven on uneven terrains quite easily, but a large turning diameter, ranging from 39.7 to 51.2 feet, makes it a little difficult to be maneuvered or parked in tight spots.

The Sierra 1500 earned five stars, the highest possible rating, in front-impact crash tests from the U.S. National Highway Traffic Safety Administration.

It comes standard with dual-stage driver and right front passenger airbags with Passenger Sensing System, while head-curtain side-impact airbags with roll-over sensor at the front and rear outboard seating positions are optional on SLE1, SLE2, and SLT.

All trims also come standard with OnStar, an in-vehicle safety and security system created to help protect you and your family on the road. OnStar's innovative three-button system offers 24-hour access to expertly trained and caring advisors, a connection to emergency assistance, and access to OnStar hands-free calling.

Some other safety features standard on the Sierra 1500 include 4-wheel anti-lock brakes and a PASSkey III Plus theft-deterrent system.

Ultrasonic rear parking assist, including audible and visual warnings, is optional on SLE1, SLE2, and SLT. The Work Truck comes equipped with StabiliTrak, a stability control system with Proactive Roll Avoidance. It is optional on the other trims.