User:SteveCof00/Chevrolet Silverado (first generation)

The first generation of the Chevrolet Silverado is a range of trucks that was manufactured by General Motors from the 1999 to the 2007 model years. The long-running C/K nomenclature was retired, with Chevrolet adopting the Silverado nameplate for its entire full-size truck range, in line with its GMC Sierra counterpart. While General Motors had ended its practice of assigning a generational moniker to the model line, the generation (internally codenamed GMT800) would informally become known to the public as the "NBS" (New Body Style), in reference to its GMT400 predecessor.

The inaugural models of the General Motors GMT800 platform, the Chevrolet Silverado and GMC Sierra marked a significant departure from the C/K model family. While the pickup trucks continued to serve as the basis for GM full-size SUVs, General Motors shifted their medium-duty trucks to a dedicated model architecture, with "one-ton" 3500-series trucks serving as the largest versions of the model family. In another change, the Silverado introduced a new range of gasoline and diesel V8 engines.

Introduced in August 1998 for the 1999 model year, the GMT800 Silverado/Sierra was marketed alongside its GMT400 predecessor, which was sold as a pickup truck through the 2000 model year. For 2000, GM released full-size SUVs derived from the GMT800 chassis; heavier-duty trucks (designated GMT880) were released for 2001. For 2007, GMT800 Silverados/Sierras were marketed alongside the successor GMT900 generation.

Development
The design work of the first-generation Silverado began in January 1993, with the $4 billion pickup program operated by the GM Truck Group. In contrast to the 18-year lifecycle of the third-generation C/K, GM shortened the lifecycle of the GMT400 series to 12 years in response to several market factors. While the GMT400 C/K (through combined Chevrolet and GMC sales) had attained a market share of over 50% in the full-size light truck segment by 1993, the 1993 introduction of the Toyota T100, the 1994 redesign of the Dodge Ram, and the introduction of the 1997 Ford F-150 eroded the share of the C/K to 40%.

The second generation of full-size trucks using the GMT codename, the GMT800 chassis marked several departures from previous design precedents. While body-on-frame construction remained present, the frame rails were designed in three modular sections (allowing for separate design accommodations); the frame rails were hydroformed steel, replacing welded stamped steel (a manufacturing process introduced on the Corvette C5).

Light duty (GMT800)
There are a number of models of light-duty Silverados and Sierras, including the half-ton, SS, and Hybrid.

The light-duty trucks use the 1500 name. They are available in three cab lengths, 2-door standard/regular cab, 3 or 4-door extended cab, and front-hinged 4-door crew cab. Three cargo beds are available: a 69.2 in short box, 78.7 in standard box, and a 97.6 in long box. The short box is only available with the crew cab.

For the first year, only the regular cab and a 3-door extended cab were available, along with the Vortec 4300 V6, Vortec 4800 V8, and the Vortec 5300 V8. In 2000, a driver's side door option became available for the extended cab, giving it four doors, and the crew-cab body was added to the lineup in 2004. Output on the 5.3 L engine also increased to 285 hp and 325 lb·ft.

The 6.0 L Vortec 6000 V8 was standard on the 2500 and was added for the 2001 Heavy Duty models, rated at 300 hp, with the GMC Sierra 1500 C3 getting an uprated 325 hp version of this engine. The Silverado Z71 got an optional lighter composite box, with a suspension package for towing, but lacked the high-output engine. The C3 became the Denali for 2002, and Quadrasteer was added.

GM introduced a reworked version of the Silverado and Sierra in 2003, with a new front end and a slightly updated rear end. In 2006 the Silverado received another facelift, similar to the HD version introduced in 2005 HD models. In addition to that, Chevrolet has deleted the "Chevrolet" badge off the tailgate that was used from 1998-2005. Its SUV counterparts retained the use of the pre-facelift sheetmetal. During the 2005 model year, all light duty GMT800 pickups reverted to front disc/rear drum brakes as a cost cutting measure; heavy duty trucks and the SUVs retained their 4-wheel disc brakes.

The Insurance Institute for Highway Safety (IIHS) gave the Silverado an overall "marginal" score on the frontal offset crash test for poor structural integrity and poor dummy control, although no injuries were recorded on the dummy's body regions.

Heavy duty (GMT 880)
The HD variant was a heavy-duty light truck. It was a strengthened version of the Silverado/Sierra light-duty, and was available in the 1500HD, 2500HD, and 3500HD models. The 1500HD, introduced in 2000, offered a Vortec 6000 V8 with 300 hp at 5200 rpm and 360 lbft of torque at 4000 rpm with a Hydra-Matic 4L80E four-speed automatic transmission. The 2500HD also offered the LB7 Duramax V8 with 300 hp at 3100 rpm and 520 lbft of torque at 1800 rpm, the LLY Duramax V8 with 310 hp (231 kW) at 3000 rpm and 605 lb·ft (820 N·m) at 1600 rpm, and the LBZ Duramax V8 with 360 hp (268 kW) at 3200 rpm and 650 lb·ft (881 N·m) at 1600 rpm. Also available was the Vortec 8100 V8 with 340 hp at 4200 rpm and 455 lbft of torque at 3200 rpm.

The 2500HD had an available five-speed (six-speed for 2006-2007 models) Allison 1000 transmission with the Vortec 8100 and Duramax 6.6. The Silverado 3500 offeradd the same engine/transmission features that the 2500HD, however it was usually equipped with "dually" twin wheels at the rear and had a stronger suspension. The HD models were primarily used for towing and high-weight cargo. The Chevrolet Silverado 2500HD came in at #2 in a 2016 study by iSeeCars.com ranking the top 10 longest-lasting vehicles. The Silverado 2500HD had 5.7% of vehicles over 200,000 miles, according to the iSeeCars study.: )

For 2002, GMC introduced a new limited edition Sierra Professional. Built as either a 1500 or 2500HD Extended Cab Standard Box model with two and four-wheel-drive, the Professional was the ultimate contractors truck. The center console area provided an area to store PDAs, cell phones and laptop computers as well as extra charging points for them and an area to hang file folders. There were also extra storage trays and larger cupholders throughout the cab, including one temperature controlled cupholder. The exterior featured lower body cladding, Professional badging, and a full-chrome grille. These trucks also featured a standard bedliner, box-rail protectors, in-bed power outlet, and many optional accessories suited to tradesmen (ladder racks, toolboxes, etc.). The 1500 series came standard with the 5.3L Vortec 5300 V8, but the 4.8L V8 could be ordered with an option credit if so desired. 2500HD models came with the 6.0L Vortec 6000 V8 only. All trucks had the four-speed automatic transmission with tow/haul mode. Customers could choose from either SLE or SLT decor. The base price for a 2002 1500 2WD with SLE decor was $29,591. 2003 was the final year the Professional was offered.

Towing capacity for the 1500HD is rated at 10,300 lb and can haul 3,129 lb in the bed depending on options. Towing capacity for the 2500HD is rated at 16,100 lb with the gasoline 8.1L V8 with 3.73:1 rear and can haul 3,964 lb in the bed depending on options. Towing capacity for the 3500HD is rated at 16,700 lb and can haul 5,753 lb in the bed depending on options. The addition of 4 wheel drive tends to reduce the towing and carrying capacity by 200 to 400 lb, depending upon year and model. Other factors, such as options, can also affect these numbers.

Hybrid
GM launched a hybrid version of the Silverado/Sierra in 2004, becoming the first ever GM hybrid passenger vehicle. Known within GM as the Parallel Hybrid Truck or PHT it is not actually a parallel hybrid by the current definition, but a type of micro hybrid design. The electric motor housed within the transmission flywheel housing, serves only to provide engine cranking/starting, battery charging, and powering accessories. The engine automatically shuts down as the truck comes to a stop and uses 42 Volt electric power to the starter/generator unit to restart the engine as the brake pedal is released. Besides the typical 12 V automotive battery the PHT uses three additional 14 V valve regulated lead acid (VRLA) batteries mounted under the rear seat to store and provide power. The truck uses a 5.3 L Vortec 5300 V8 for primary propulsion power. These trucks were also purchased back from customers for more than what they were worth in the late 2000s.

The PHT features four 120 volt 20 amp AC outlets, two in the bed and two inside the cab under the rear seat. These are particularly interesting to the building/construction contractor market, since they often require AC power when on the job. Additionally, the extra reserves of power for the accessories make this truck well-suited to that market, where trucks often sit at idle for hours at a time.

Availability was extremely limited at first, with commercial buyers getting the first allotment. Later in 2005, the truck was offered at retail in Alaska, California, Florida, Nevada, Oregon, Washington and Canada. For 2006–07 the truck was generally available to retail buyers throughout North America. The Parallel Hybrid Truck was discontinued for the 2008 model year with the release of the GMT900 truck line. Starting in 2009, General Motors offers a second generation Chevrolet Silverado and GMC Sierra equipped with a Two-Mode Hybrid powertrain and CVT.

2001 GMC Sierra C3/Denali


GMC created an upscale version of its Sierra 1500 in 2001 called the Sierra C3 (styled as C ³). It used all-wheel drive with a 3.73 final drive gear ratio and included the 6.0 L Vortec 6000 LQ4 V8 rated at 325 hp at 5000 rpm and 370 lb•ft (502 N·m) of torque at 4000 rpm coupled to a 4L60E-HD four-speed automatic transmission along with other upscale equipment. For 2002, the name was changed to Sierra Denali, but the specifications remained essentially the same except for the addition of Quadrasteer and GM changed from the 4L60E-HD to the 4L65E in conjunction with a 4.10 final drive gear ratio.

The Denali is rated for towing 9100 lb and hauling 1595 lb in the cargo box.

The Sierra Denali was initially equipped with Delphi's Quadrasteer system as standard equipment. It was a 4-wheel steering system that greatly reduced the truck's turning radius and improved lane changing while towing. General Motors dropped Quadrasteer from the Sierra Denali after the 2004 model year and its entire lineup after 2005 due to poor sales of this expensive option.

Chevrolet Silverado SS
Launched in early 2003, the Silverado SS is a high-performance pickup truck built by Chevrolet. It is based on the 1500 Silverado Extended Cab with Fleetside Box and features upgrades in the drive train and both exterior and interior appearance. It was equipped standard with the 6.0 liter Vortec High-Output V8 rated at 345 hp at 5200 rpm and 380 lbft of torque at 4000 rpm coupled to a 4L65E four-speed automatic transmission. This was the same engine used for the second generation Cadillac Escalade. Chevrolet and GMC advertised this engine as the Vortec High Output and later as the "VortecMAX", while Cadillac calls it the "HO 6000". The SS debuted in 2003 with a standard All Wheel Drive setup with a 4.10 final drive gear ratio and 4 wheel disc brakes. In 2005, in an attempt to increase sales, a 2-wheel drive version became available (the 2WD SS also lost its rear disc brakes in favor of drums, as did the rest of the 1/2-ton GMT800s). 2005 was also the first year the sunroof was available in the SS line up. In 2006, the AWD variant was dropped and the rear wheel drive was the only driveline layout available. In a further effort to reduce cost, buyers could also choose cloth interior and/or a bench seat. The Silverado SS also comes with the Z60 performance suspension and 20 inch aluminum wheels. All the SS trucks in both 2 wheel drive and AWD used the torsion bar style front suspension for better handling. SS themed trucks were only available from the factory in Black Onyx, Victory Red, and Arrival Blue Metallic from 2003 to 2004. In 2005 Arrival Blue Metallic was dropped from the color choices and replaced with Silver Birch Metallic.

Intimidator SS
In 2006, Chevrolet released a special edition Silverado SS under the name "Intimidator SS" (licensed by Dale Earnhardt, Inc.) to honor the late Dale Earnhardt. The truck came with several minor appearance upgrades (rear spoiler, embroidered headrests, Intimidator custom badging), but was essentially a standard Silverado SS. Of the 1,033 scheduled trucks, only 933 were made (the remaining 100 were sold as 2007 Silverado SS "classic" body style trucks before the 2007.5 MY changeover. These trucks were only available in Black Onyx exterior but could be ordered with cloth or leather interior. Also features

Vortec High Output/Vortec Max
The Vortec High Output option was first introduced in 2004 to a limited market (mainly consisting of Texas and several surrounding areas); it was available nationwide for MY 2005. It was available for both the Chevy and GMC 1500 series trucks. This special edition package (under option code B4V) included several options previously not found on the standard 1500 model, most notably the LQ9 6.0 L V-8 engine (the same used for the Silverado SS, the 2005-2006 GMC Denalis and the Cadillac Escalade). The LQ9 motor was rated at 345 hp at 5200 rpm and 380 lbft of torque at 4000 rpm, which was the same specifications shared in the SS models. The B4V package could only be ordered on extended cab standard box 2WD trucks. They were all built at the Canadian assembly plant and were equipped with the Z60 High Performance suspension package, in addition to the M32 = 4L65E transmission, GT4 = 3.73 rear gear, and G80 Gov Lock as standard equipment. The 2004 models were equipped with the standard 10 bolt 8.625 rear end. The 2005 models were upgraded with the larger 14 bolt 9.5 rear end under RPO option AXN. The package also included one style of the newly introduced GM 20 inch wheels installed from the factory. This marked the first time the LQ9 engine was available for a two-wheel drive application. Unlike the previous years with the SS Package, interior choices ranged from basic cloth to fully loaded. There were also more exterior color options available with this package.

In 2006, the Vortec Max trailering package became available. The Vortec Max package was added to the option list with an array of similar features and new badges, and at its core retained the LQ9/4L65-E powertrain. However, the Vortec Max package differed from the Performance edition in that it also came with a variant of the Z85 Handling/Trailering suspension, as well as 17-inch wheels and tires under the option code NHT (and was available on 4x4 models in addition to 4x2 trucks) versus the Z60 High Performance Suspension and 20-inch wheel and tire package of the regular B4V (which was limited to 2 wheel drive trucks). This was because the Vortec Max package was intended for max trailer towing, while the Performance Edition was intended more for customers who wanted the Silverado SS mechanicals without the visuals of the SS. It was also made available (in addition to the extended cab) in the light duty 4 door crew cab models. Towing capacity with the VortecMax Trailing package was 10,800 pounds.