AUDIO SYSTEM, GMC INFOTAINMENT SYSTEM WITH 7 DIAGONAL COLOR TOUCH-SCREEN, AM/FM STEREO with seek-and-scan and digital clock, includes Bluetooth streaming audio for music and select phones; featuring wired Android Auto and Apple CarPlay capability for compatible phones (STD) ,CRUISE CONTROL, STEERING WHEEL-MOUNTED (Included with (PCI) Convenience Package or (ZLQ) Fleet Convenience Package.) ,ENGINE, DURAMAX 6.6L TURBO-DIESEL V8 B20-Diesel compatible, (470 hp [350.5 kW] @ 2800 rpm, 975 lb-ft of torque [1322 Nm] @ 1600 rpm) (Includes (K05) engine block heater. Included with (PCK) Ambulance / Fire / Rescue Package.) ,TRANSMISSION, ALLISON 10-SPEED AUTOMATIC (Included and only available with (L5P) Duramax 6.6L Turbo-Diesel V8 engine. Not available with (PTO) Power Take-off.)