2013 GMC Sierra 3500HD

MECHANICAL Rear axle, 3.73 ratio Suspension Package, Handling/Trailering, heavy-duty includes 35mm monotube shocks and 34mm front stabilizer bar Pickup box, Wideside Air cleaner, high-capacity Transfer case, electronic shift with rotary dial controls (Requires 4WD models) Cooling, external engine oil cooler, heavy-duty air-to-oil integral to driver side of radiator tank Cooling, auxiliary external transmission oil cooler, heavy-duty air-to-oil Battery, heavy-duty 600 cold-cranking amps, maintenance-free with rundown protection and retained accessory power Alternator, 125 amps Trailer brake controller, integrated Frame, fully-boxed, hydroformed front section Suspension, front independent, torsion bar Suspension, rear 4+1+2 multi-leaf springs for single rear wheel and 3+1+2 multi-leaf springs for dual rear wheel Exhaust, aluminized stainless-steel muffler and tailpipe --- EXTERIOR Tire carrier, outside spare, winch-type mounted under frame at rear (Orders with (ZW9) Pickup box delete will not include a Spare Tire Carrier unless a spare tire is ordered.) Spare tire lock keyed cylinder lock that utilizes same key as ignition and door (Not included when (ZW9) pickup box delete or (VF7) rear bumper delete is ordered.) Bumper, front chrome includes body-color bumper top caps Bumper, rear chrome, step-style with pad (Not available with (ZW9) pickup box delete) Moldings, bodyside, body-colored Grille, chrome surround Lamps, dual cargo area lamps Tailgate protection top of tailgate protection cap --- INTERIOR Instrumentation, analog with speedometer, fuel level, engine temperature, tachometer, 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 button unless (UK3) steering wheel mounted audio controls is ordered. On 3SA and 4SA, includes 8-point compass and outside temperature.) Warning tones headlamp on, key-in-ignition, driver and passenger buckle up reminder and turn signal on Cup holders, front (Also includes rear cupholders on Extended and Crew Cab models) Headliner, Opal Gray-colored cloth with matching retainer moldings Assist handle, front passenger (Also includes rear assist handles in the headliner on Extended and Crew Cab models) Coat hooks, rear driver and passenger side --- Differential:Differential, heavy-duty automatic locking rear Trailering:Trailering equipment, heavy-duty includes trailering hitch platform and 2.5- inch receiver with 2" adapter, 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) and (JL1) integrated trailer brake controller (Will be deleted if (ZW9) pickup box delete is ordered.) Audio:Audio system feature, Bose premium speaker system with sub-woofer in center console Telephone:Bluetooth for phone personal cell phone connectivity to vehicle audio system