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2015 GMC Sierra 1500 Maintains 12,000-lb. Max Trailering

August 11, 2014
GMC Sierra Towing

GMC Sierra Towing

 

The 2015 GMC Sierra 1500 maintains a 12,000-pound maximum trailering rating under SAE J2807 Recommended Practices – calculations being adopted throughout the industry. “For 2015, the GMC Sierra 1500 builds on the strong foundation introduced with the redesigned 2014 model to offer uncompromising strength, capability and confidence,” said Jeff Luke, executive chief engineer. “The implementation of SAE J2807 levels the playing field among all manufacturers, affirming the capability customers depend on from GMC.”  Sierra’s 12,000-pound maximum rating is for the Double Cab 2WD configuration equipped with the available 6.2L V-8 engine and available Max Trailering Package. Trailering ratings for other configurations remain the same or are slightly lower, per the new SAE J2807 calculations. Examples of popular configurations with revised ratings include:

Configuration 2014 (Pre SAE  J2807) 2015 (SAE J2807)
Double cab 4×4 5.3L V-8 6’ 6”  box 3.42 axle 9,600 lbs. 9,200 lbs.
Crew cab 4×4 5.3L V-8 5’ 8” box 3.73 axle 11,200 lbs. 10,800 lbs.

While the calculations for trailering ratings may have changed, the Sierra 1500’s powertrain and chassis features that support serious towing have not:

  • The available 6.2L EcoTec3 V-8 is the most powerful engine offered in the light-duty segment, with 420 horsepower and 460 lb-ft of torque. Like other EcoTec3 engines, it combines proven performance with advanced fuel-saving technologies, seamlessly switching to four cylinders to improve efficiency in light-load driving
  • The available Max Trailering Package includes a 9.76-inch rear axle, heavy-duty rear springs, revised shock tuning for increased control, enhanced cooling, and an integrated trailer brake controller. Also included is the G80 locking rear differential, a trailer hitch, and bumper-mounted four- and seven-pin connectors
  • Sierra’s standard 4.3L EcoTec3 V-6 and available 5.3L EcoTec3 V-8 also will offer significant towing capability for 2015, with maximum available trailer weight ratings of 7,600 pounds for the V-6 and 11,200 pounds for the 5.3L.

Customers should follow the trailering guidelines in their owner’s manual, ask their GMC dealer for trailering advice, or contact GMC Customer Assistance for more information. Additionally, the GMC Trailering Guide can be found in the Manuals & Videos section under the Ownership tab of the GMC.com Web site. The foundation for all 2015 Sierra 1500 models and their trailering capability is a fully boxed, high-strength steel frame. Extensive use of high-strength steels in the frame and body structure also contributes to a quieter interior and more solid feel, and helps Sierra earn a 5-Star Overall Vehicle Score for safety in the newest government crash tests. Government 5-Star Safety Ratings are part of the U.S. Department of Transportation’s New Car Assessment Program. GMC backs Sierra customers with the ProGrade protection program. It includes two years/24,000 miles (whichever comes first) of scheduled maintenance, covering four services of an oil change, tire rotation and 27-point inspection. It complements the three-year/36,000-mile (whichever comes first) bumper-to-bumper limited vehicle warranty and five-year/100,000-mile (whichever comes first) powertrain limited warranty for peace of mind. Background: SAE J2807 Recommended Practices Performance standards for trailering vehicles: To help ensure that vehicles can confidently tow the rated maximum trailer weight under a variety of real-world driving conditions, SAE J2807 establishes specific test protocols. These include:

  • Cooling capability on a long highway upgrade modeled on the Davis Dam grade on Arizona SR 68;
  • Launch and acceleration performance on a level road and a 12 percent upgrade;
  • Combined handling performance – understeer and trailer sway;
  • Combined braking performance – stopping distance and parking brake-hold on grade; and
  • Structural performance for the vehicle and hitch or hitch receiver.

New calculations for trailer weight ratings: In addition to the performance standards, SAE J2807 also uses a specific set of assumptions to calculate maximum trailer weight ratings:

  • For light-duty full-size pickups (GVWR < 8,500 lbs.), SAE J2807 assumes that the tow vehicle includes any options with higher than 33 percent penetration;
  • It assumes there is both a driver and passenger in the vehicle, each weighing 150 pounds;
  • It assumes that tow vehicles also include up to 70 pounds of aftermarket hitch equipment (where applicable); and
  • For conventional trailer towing, SAE J2807 assumes that 10 percent of the trailer weight is on the tongue.

 

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