ENGINE, DURAMAX 6.6L TURBO DIESEL V8
TRANSMISSION, ALLISON 1000 6-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED WITH OVERDRIVE, ELECTRONIC ENGINE GRADE BRAKING AND TOW/HAUL MODE.
DIFFERENTIAL, HEAVY-DUTY AUTOMATIC LOCKING REAR
HEAVY-DUTY POWER PACKAGE
ONSTAR PLUS PACKAGE
ONSTAR, 1-YEAR OF SAFE AND SOUND PLAN.
TRAILERING EQUIPMENT, HEAVY-DUTY
