SEAT ADJUSTER, DRIVER 6-WAY POWER (Requires (AS5) front bucket seats with Custom Cloth.) ,ENGINE, 6.6L V8 with Direct Injection and Variable Valve Timing, gasoline, (401 hp [299 kW] @ 5200 rpm, 464 lb-ft of torque [629 N-m] @ 4000 rpm) Includes external engine oil cooler. (Requires (KG4) 150-amp alternator or (KW5) 220-amp alternator. Reference the Engine/Axle page for availability. Included with (WPD) Safety Package and (ZL3) Enhanced Convenience Package. Requires (N8X) 8-speed heavy-duty automatic transmission.) ,TRANSMISSION, 8-SPEED AUTOMATIC, HEAVY-DUTY, ELECTRONICALLY CONTROLLED with overdrive and tow/haul mode. Includes Cruise Grade Braking, Powertrain Grade Braking, and Tap-Up/Tap-Down Driver Shift Control (Requires (L8T) 6.6L gas V8 engine. Reference the Engine/Axle page for availability.) ,AUDIO SYSTEM, AM/FM STEREO WITH MP3 PLAYER seek-and-scan, digital clock, TheftLock, random select, auxiliary jack and 2 front door speakers (STD) ,DRIVER CONVENIENCE PACKAGE includes Tilt-Wheel and (K34) cruise control (Included with (WP9) Communications Package, (WPD) Safety Package, (ZL3) Enhanced Convenience Package or (PCH) Hotel Shuttle Package.)