It's All About Choice
When Ford announced its '07 model line, the Blue Oval team touted that the F-Series offered 60 different truck configurations-not options but actual truck configurations with differing cabs, boxes, drivelines, and so forth. The General also knows sthat choice is king, when it comes to selling fullsize trucks to Americans. GM didn't total the number of possible combinations with its trucks, but between Chevrolet and GMC, the range is staggering. A quick overview regarding main choices includes:

TWO NAMEPLATES:
Chevrolet Silverado
GMC Sierra

THREE CAB STYLES:
Regular
Extended
Crew Cab

THREE BOX LENGTHS:
Short, at 5 feet, 8 inches
Standard, at 6 feet, 6 inches
Long, at 8 inches

EIGHT ENGINES:
4.3L V-6 with 195 horsepower
4.8L V-8 with 295 horsepower
5.3L V-8 with 315 horsepower*
6.0L V-8 with 367 horsepower
6.2L V-8 with 400 horsepower

(GMC Sierra Denali)
THREE ELECTRONICALLY CONTROLLED TRANSMISSIONS:

Four-speed automatic (4L60/4L65 base)
Four-speed automatic (4L70 high-capacity)
Six-speed automatic (6L80 high-capacity, GMC Sierra Denali)

THREE DRIVELINE CHOICES:
Two-wheel drive
Four-wheel drive
All-wheel drive (GMC Sierra Denali)

THREE MAJOR INTERIOR CHOICES:
Work truck
Luxury
Ultra luxury (GMC Sierra Denali)

*There are four different 5.3L engines, each with identical horsepower outputs. Variations include iron and aluminum blocks and flex-fuel capabilities.