GMC redesigned the inconic Sierra and included quite the powertrain, so powerful in fact that it made our Top Towing Capacity for 2015 list. The Sierra 1500 recieved its first complete retooling since 1987, the GMC half-ton truck featured an all-new design and a hydroformed frame in 1999. The truck was defined as the New Sierra 1500 for 1999 and 2000 as the previous generation GMC Sierra constructed on the GMT400 platform was still being sold. Upon introduction, the 1999 GMC New Sierra 1500 was offered as a regular and extended cab model equipped with a Wideside bed.
The extended cab versions of the truck received a standard third door for rear seat passengers. The interior of the 1999 New Sierra 1500 was expanded compared to the previous generation for extra comfort. Four-wheel disc brakes with anti-lock braking system, dual airbags, tilt adjustable steering wheel and 16-inch wheels came standard on the GMC truck.
Available as a rear-wheel or four-wheel drive model, the 1999 GMC New Sierra 1500 featured a line-up of three Vortec engines. The base powerplant was a 4.3-liter V-6 engine generating 200 horsepower and 260 pound-feet of torque offered with the choice of a five-speed manual or four-speed automatic transmission. When mated with a manual gearbox, the 4.3-liter V-6 engine allows the GMC New Sierra 1500 to achieve fuel economy up to 23 miles per gallon.
For eight-cylinder power inspired by technology used on the Chevrolet Corvette, a 255-horsepower 4.8-liter and 270-horsepower 5.3-liter engine could also be used to propel the pickup truck. Equipped with the 5.3-liter Vortec V-8 powerplant, the 1999 GMC New Sierra 1500 can tow up to 8,000 pounds. When GMC dropped the previous generation Sierra 1500 after the 2000 model year, the newer half-ton pickup truck became the only choice for customers.