Full size pickups of Sierra were and remain the most popular models in the freight program GMC. And although denotation of Sierra in different variants(Sierra, High Sierra, Sierra Grande) was used on these pickups from 1975 and specified on the different variants of execution and level of equipment, fully a new model under such name appeared only by the end of 80th of past century. To present of model tense Sierra is divided into three groups depending on the carrying capacity (in pound): 1500, 2500 and 3500.
Similarly all modifications have increase variants of Heavy â€“ Duty (HD) for heavy external environments and dual-slop bus bar of back wheels.
Variants of baskets for all generations it was envisaged a few: ordinary 2-door Regular Cab and extended Cab or 4-door Crew Cab. Two variants of length of cargo bay (Short Box and Long Box) are also accessible with two types of sides, flat Sport side or with the wide wings of Wide side.
Traditional after the debut of every new model the former generation of these pickups continued to be produced yet some time under the name Sierra Classic.
Gamut of engines: 4,3-with a capacity of one the liter V6(195 hp, 353 hm), modernized V8 4,8 L. (295 hp, 414 hm) and new motors of V8 by volume of 5,3 L. (315 hp, 454 hm) with the system of disconnecting of half of cylinders of AFM and 6,0 L. of SFI (367 hp, 509 hm) with phase shifters, AFM and direct injection of fuel. All engines I work in a pair with a 4-step Â«automatÂ» (from 2009 for engines 5,3 and 6,0 L. 6-step Automatic is envisaged).
For the series of Heavy - Duty is offered only two engines of V8: petrol 6,0-with (360 hp, 515 hm) a capacity of one the L. and turbo diesel Duramax by volume of 6,6 L. (365 hp, 895 hm). Both engines are completed a 6-step hydro.
The acquisition of Denali sold from 2007 is equipped 6,2-with a capacity of one the L. V8 SFI (403 hp, 563 hm), by a 6-step Â«automatÂ» and blocked back differential.
Standard is a drive on back wheels, and the full drive 4-regime transmission of Autotrac with demultiplicator is plugged in the list of options (for HD standard with a back self-locking differential).
Front pendant - independent spring (for 1500) or torsion (for HD), back - dependent on semi elliptic springs with the different types of shock absorbers.
The list of standard and additional equipment of Sierra includes ABS, systems of stabilizing of StabiliTrac and control of traction, parktronic, cruise-control, 6 pillows of safety, electro mechanic of tailboard(option), separate climate-control, complete electro-package, audio system Boss with subwoofer and 6-disk changer, controlled from distance starting of engine, front seats electrically-actuated and by 6 regulations, system OnStar, entertaining DVD- system for back passengers and other great deal.