2012 GMC TRAILeRING GUIDe

2012 GMC TRAILerING GUIDEtrail e r w e ig h t rating s v e h icl e s e l e cti o n h itc h s e l e cti o n trail e ring ti p s

selecting A vehicle3Every GMC truck, crossover, SUV andvan is designed specifically for trailering,with power, handling and conveniencefeatures you can rely on for long haulsand heavy loads. This guide will helpyou select the GMC model that’s right foryour trailering needs, and also containshelpful tips for loading, driving andparking with your trailer.GMC CANYON extended cab slE in QUICKSILVER metallic SHOWN WITH AVAILABLE EQUIPMENT

The chart below gives you an ideaof the maximum amount of weight youcan confidently and safely trailer withdifferent GMC model lines when yourvehicle is properly equipped. Whendetermining the total weight of trailerand cargo, include the weight of anymaximum trailer weight rating (lbs) tional passengers and optionalequipment (driver weight and baseequipment are already included). Seepages 13-19 for maximum trailerweight ratings by specific model.17,00019,00021,00023,0003500ACADIA/ACADIA DENALI 52002CANYONSAVANA 1500 PASSENGERYUKON XL / YUKON XL DENALIYUKON / YUKON DENALI6000620081008500YUKON XL 3/4-TON9600SIERRA DENALI9600SAVANA 2500/3500 PASSENGER9 9003SIERRA 150010,7004SIERRA HEAVY DUTY1 aximum trailer weight ratings are calculated assuming a base vehicle, except for any option(s) necessary to achieve the rating, plus driver. The weight of other optional equipment, passengers and cargo willMreduce the maximum trailer weight your vehicle can tow. See your GMC dealer for additional details. 2Requires Trailering Package (V92), which includes a factory-installed trailer hitch platform, seven-pin electricalplug and a Heavy-Duty Cooling Package. 3Savana 3500 RWD with Duramax Diesel engine (LGH). 4Sierra 1500 Extended Cab 2WD with standard box and Max Trailering Package. 5Sierra 3500HD RegularCab 4WD DRW with Duramax Diesel engine (LML).423,0005

VEHICLES AND HITCHES s electing the right hitch Choosing the right hitch and making the proper electrical connectionsaffects how your vehicle handles, corners and brakes, and allows you to alert other drivers of yourintentions. Before selecting a hitch or trailering package, you should be familiar with the weightratings specific to your GMC vehicle, which are detailed on pages 13-19. hitch ballON STEP BUMPER s electing TRAILERING EQUIPMENt Every GMC vehicle features a variety of standard and available equipment for enhanced trailering performance. Aside from the equipment describedbelow, features such as heavy-duty cooling and extendable trailering mirrors may be available.See your GMC dealer for more information on the model you’re interested in.hitch This consists of a hitch ball mounted to a step bumper or draw bar,commonly used for trailering light and medium loads. Hitch balls are available in a range ofsizes. Make sure that the diameter of your hitch ball matches your trailer coupler. Also checkthat the ball meets or exceeds the gross trailer weight rating.1 weight-carryinghitch ballON DRAW BARHITCH This is most often used for heavier trailering. This hitch typemore evenly distributes the trailer load by using spring bars to shift some of the hitch weightforward onto the tow vehicle’s front axle, and rearward to the trailer’s axles.1 weight-distributinghitch and gooseneck hitch These are designed for heavy trailering. Located inthe bed of the truck, these hitches position the trailer’s kingpin weight over or slightly in frontof the truck’s rear axle. Fifth-wheel and gooseneck hitches are most frequently used withtravel trailers, horse trailers and other large trailers.2 fifth-wheelWEIGHT-DISTRIBUTINGHITCHpackage An optional Heavy-Duty Trailering Equipment Package is available fora wide variety of GMC models (and is standard on some Sierra and Yukon models). The Z82Package includes a trailer hitch platform and may include other trailering equipment. traileringharness This allows you to connect the electrical components of your trailer, suchas signal and brake lights, to the trailering vehicle. Select Sierra models and all Yukon modelsfeature a seven-pin wiring harness to streamline hookup of trailer lighting and brakes, anda bussed electrical center makes it easier to connect an electrical trailer brake controller. wiringfifth-wheel hitchbrake controller This is optional on most Sierra pickups and Yukon models.Completely integrated within the electrical system and its antilock braking system, it allowsyour trailer’s brakes to operate simultaneously with the vehicle’s brakes. Integratedgooseneck hitch5brakes These are required above 2000-lb trailer weight on Sierra and Yukon, andabove 1000-lb trailer weight on all other models. The most common trailer braking systemsare surge brakes (found primarily on boat trailers) and electric brakes (often used on traveltrailers, horse trailers and car haulers). Surge brakes are a self-contained hydraulic brakesystem on the trailer, activated during deceleration as the trailer coupler pushes on the hitchball. An electric trailer brake system uses a brake control unit mounted inside the traileringvehicle; it operates by sensing the vehicle brakes and then applying the trailer brakes. trailerSee pages 13-19 for ratings.1 2See page 14 for ratings.

In general, a higher series number indicatesa greater load-carrying capacity. In addition, a vehiclewith a higher series number typically has a strongerframe, more rigid chassis and higher-capacity brakes,increasing the vehicle’s ability to trailer heavy loads. seriesCLOSED-CARGO VEHICLES There are twotypes of GMC vehicles: open-cargo (Sierra, Canyon),designed primarily for carrying lots of cargo; and closedcargo (Acadia, Yukon, Terrain, Savana), for carrying bothcargo and passengers. The multipurpose capabilities ofour full range of closed-cargo vehicles make them goodchoices for drivers with broad driving requirements. OPEN-CARGO,6GMC YUKON XL 3/4-ton slt in QUICKSILVER Metallic SHOWN WITH AVAILABLE EQUIPMENT

The engines in GMC vehicles are specifically designed to provide the power and performanceneeded to handle light, medium or heavy loads over the long haul. They consistently deliverthe high torque ratings needed to pull heavy loads and the horsepower needed to keep youmoving down the road with confidence and control.POwer and performanceVORTEC 5.3L V-8 VVT (LC9)Vortec Cylinder Head Advanced cooling systemThe Vortec engine’s uniquecylinder head design effectivelymixes the intake charge toimprove the air/fuel mixturefor enhanced performance. The Vortec’s cooling systemdistributes equal amountsof coolant to the cylinder casefor more efficient cooling.balanced Crankshaft Electronic throttle controlAn internally balancedcrankshaft reduces stressfor enhanced durability.An Electronic Throttle Controlsystem optimizes drivabilityand fuel economy1 as well asreduces emissions.Sierra Heavy Duty modelsare available with the Duramax Diesel 6.6L V-8 Turbo engine and the Allison 6-speed automatictransmission. The Allison transmission’s target lifespan of up to 200,000 miles 2 is madepossible through the use of larger, heavier components than normally found in 1-ton pickups.With an extraordinary 765 lb-ft of torque, the Duramax Diesel makes the 3500HD the mostpowerful Sierra HD ever. DuramaX Diesel V-8 and Allison 6-Speed Automatic transmissionENGINE TECHNOLOGY Mile after mile, our Vortec engines reassert their reputation forstand-up performance and innovative, breakthrough engineering. This performance all startswith a unique cylinder head design: By developing an effective air flow velocity and path,just as a tornado twists a column of air, the Vortec cylinder head improves the air/fuel mixfor better performance and fuel efficiency. In addition, the coil-near-plug ignition producesa reliable spark, and a stiff engine block provides superior vibration damping. VORTECREAR DIFFERENTIAL Many GMC models are available with an Eaton automatic lockingrear differential, designed to improve low-speed traction of your 2WD or 4WD vehicle. Thedifferential engages when the speed difference between the rear tires reaches approximately100 rpm. Once the differential engages, both rear wheels rotate at the same speed, providingmore of the driveline’s torque to the tire with better traction. LOCKING172EPA-estimated city/hwy mpg: Sierra XFE with Vortec 5.3L V-8, 15/22; Yukon with Vortec 5.3L V-8, 15/21; Yukon XL with Vortec 5.3L V-8, 15/21.Maintenance needs vary with different driving conditions.

For trailering, GMC recommends an automatic transmission for convenience and improved performance. SierraHeavy Duty trucks with the available Duramax engine are equipped with an Allison 6-speed automatic with Tow/Haul mode, which raises upshift points to use more of the engine’s power for strong acceleration and raisesdownshift points to help slow your truck using engine braking. The 6-speed automatic transmission that comesstandard on Yukon, Yukon XL, Yukon Denali and Yukon XL Denali, and is available with Sierra, includes Tow/Haulmode. It includes a passive shift stabilization feature that helps eliminate overactive shifting, a shift scheduleto contribute to the solid shift feel, improved transmission life and overall trailering capability.selected horsepower and torque R ATINGSenginehp @ rpmtorque lb-ft @ ia/acadiadenaliyukon xlyukonxl denali288 @ 6300270 @ 3400242 @ 5600242 @ 46004.3l v-6 (lu3)195 @ 4600260 @ 28004.8l v-8 (l20)302 @ 5600305 @ 46005.3l v-8 (lmg) gas315 @ 5200335 @ 4000320 @ 5400 320 @ 5400335 @ 4000 335 @ 40005.3l v-8 (lmg) e85326 @ 5300348 @ 4400326 @ 5300 326 @ 5300348 @ 4400 348 @ 4400280 @ 5200295 @ 4600300 @ 5200320 @ 3600310 @ 5200334 @ 45005.3l v-8 (lmf)5.3l v-8 (lc9) gas315 @ 5200335 @ 4000320 @ 5400 320 @ 5400335 @ 4000 335 @ 40005.3l v-8 (lc9) e85326 @ 5300348 @ 4400326 @ 5300 326 @ 5300348 @ 4400 348 @ 44006.0l v-8 vvt (l96)6.0l v-8 vvt (lz1)hybrid332 @ 5100367 @ 41006.2l V-8 VVT (l9h)403 @ 5700 403 @ 5700417 @ 4300 417 @ 4300360 @ 54001322 @ 54002352 @ 54003323 @ 4600380 @ 4200382 @ 42003373 @ 4400332 @ 5100367 @ 4100332 @ 5100367 @ 4100403 @ 5700 403 @ 5700417 @ 4300 417 @ 43006.2l V-8 VVT (l94)6.6l V-8 turbodiesel (lMl)397 @ 3000765 @ 16006.6l V-8 turbodiesel (lgh)8Horsepower for vehicles less than 10,000 lbs GVWR.1 savana264 @ 6950222 @ 51003.6l v-6 vvt di (llt)5.3l v-8 (lh9)yukondenali185 @ 5600190 @ 28003.0l v-6 vvt di (lfW)3.7l i-5 vvt (llr)yukon182 @ 6700172 @ 49002.4l i-4 vvt di (lGA)2.9l i-4 vvt (llv)terrain260 @ 3100525 @ 16002Horsepower for vehicles greater than 10,000 lbs GVWR.3Standard and only available on Yukon XL ¾-ton models.