<P> For the' 07 model year, the Sierra Denali shares the same billet grille from the other Denali models, and also has the same dash as the' 07 SUV's . The' 07 Sierra Denali was initially the only half ton pickup that had a 6.2 liter with 403 hp (301 kW) and 417 lb ⋅ ft (565 N ⋅ m) of torque coupled to a six speed transmission . This truck is also an optional all wheel drive vehicle and goes 0 - 60 mph in 6.3 seconds . </P> <P> Launched in early 2003, the Silverado SS is a high - performance pickup truck built by Chevrolet . It is based on the 1500 Silverado with upgrades in 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 (257 kW) at 5200 rpm and 380 lb ⋅ ft (515 N ⋅ m) 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 sun roof 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, you could also get cloth interior and / or 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 . It should also be noted the 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 choice and replaced with Silver Birch Metallic...</P> <P> 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 just a regular Silverado SS . Of the 1,033 scheduled trucks, only 933 were made (the remaining 100 were sold as 2007 Silverado SS "classic" bodystyle 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 - </P> <P> 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 (257 kW) at 5200 rpm and 380 lb ⋅ ft (515 N ⋅ m) 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, you could order the interior combination in anything from basic cloth to fully loaded . There were also more exterior color options available with this package . </P>

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