Cooling- auxiliary external transmission oil cooler- heavy-duty air-to-oilTrailering Package- heavy-duty includes trailering hitch platform and 2-inch receiver- 7-wire harness (harness includes wires for: park lamps- backup lamps- right turn- left turn- electric brake lead- battery and ground) with independent fused trailering circuits mated to a 7-way sealed connector- wiring harness for after-market trailer brake controller (located in the instrument panel harness)- (K5L) heavy-duty cooling package- (KC4) external engine oil cooler and (KNP) external transmission oil coolerTransfer case- electronic Autotrac with rotary dial controls (Requires 4WD models.)Four wheel driveBattery- heavy-duty 600 cold-cranking amps- maintenance-free with rundown protection and retained accessory powerAlternator- 145 ampsFrame- fully-boxed- hydroformed front sectionSuspension- front independent- coil over shockSuspension- rear 2-stage multi-leaf springs- semi-ellipticSteering- power- rack-and-pinionExhaust- aluminized stainless-steel muffler and tailpipeWheel- 17"" (43.2 cm) steel spare (spare wheel will not cosmetically match the other 4 wheels)Spare tire lock keyed cylinder lock that utilizes same key as ignition and doorTire carrier- outside spare- winch-type mounted under frame at rearBumper- front body-colored (Includes body-colored bumper bar and end caps with Black lower section.)Bumper- rear chrome- step-style with padAir dam- BlackMoldings- bodyside- body-coloredGrille- body-colored with unique chrome insertLamps- dual cargo area lampsGlass- Solar-Ray deep-tinted (all windows except light-tinted glass on windshield and driver- and front passenger-side glass) (With Regular Cab models- includes rear window. With Extended Cab models- includes rear and rear quarter windows. With Crew Cab models or (C49) rear-window defogger- includes light-tinted rear window.)Wipers- front intermittent wet-arm with pulse washersDoor handles- color-keyedPickup box- FleetsideAudio system feature- Bose premium speaker system with sub-woofer in center consoleBluetooth for phone personal cell phone connectivity to vehicle audio systemSeat- rear 60/40 folding bench (folds up)- 3-passenger- folding (includes child seat top tether anchor)Steering column- Tilt-Wheel- adjustable with brake/transmission shift interlockSteering wheel- leather-wrapped with theft-deterrent locking featureSteering wheel controls- mounted audio controlsInstrumentation- analog with speedometer- odometer- fuel level- engine temperature- and tachometer (Includes voltmeter and oil pressure indicators.)Driver Information Center with odometer- trip odometer and message center (monitors numerous systems depending on vehicle equipment level including low fuel- turn signal ""on""- transmission temperature and oil change notification) (Driver Information Center controls are operated through the trip odometer button unless (UK3) steering wheel mounted audio controls is ordered. On 1LT- 1SF and 1LZ- includes 8-point compass and outside temperature.)Warning tones headlamp on- key-in-ignition- driver and passenger buckle up reminder and turn signal onWindows- power with driver Express-Down (Includes front passenger Express-down.)Cruise control- electronic with set and resume speed- located on steering wheelAir conditioning- dual-zone automatic climate control with individual climate settings for driver and right-front passengerDefogger- rear-window electric (Not available with (A48) power sliding rear window.)Cup holders- front (Also includes rear cupholders on Extended and Crew Cab models.)Mirror- inside rearview auto-dimmingVisors- driver and front passenger- sliding with clip and illuminated vanity mirror on driver and passenger-side- Opal Gray-coloredAssist handle- front passenger (Also includes rear assist handles in the headliner on Extended and Crew Cab Models.)Coat hooks- rear driver and passenger sideLighting- interior with dome and reading lights- illuminated entry feature and backlit instrument panel switchesStabiliTrak- stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assistAir bags- frontal- driver and right-front passenger with Passenger Sensing System (Always use safety belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)Air bags- head curtain side-impact- front outboard seating positions with rollover sensor (Always use safety belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)Air bags- seat-mounted side-impact- driver and right-front passenger for thorax and pelvic protection (Always use safety belts and child restraints. Children are safer when properly secured in a rear seat in the appropriate child restraint. See the Owner's Manual for more information.)Door locks- rear child security (Crew Cab models only.) 
