General Motors is now the first Detroit carmaker to rate the towing limits of its light-duty pickups, following a common standard agreed to adopt two years ago. Most configurations of the 2015 GMC Sierra 1500 and Chevrolet Silverado 1500 saw their maximum trailer weight ratings trimmed by 400 lbs from the 2014 model year as they comply with the J2807 standard.
GM remarked that revised towing ratings range from 6,100 lbs to 12,000 lbs. GM’s new towing ratings comply with the J2807 standard of SAE International. The standard was agreed upon by carmakers to eliminate confusing towing capacity claims, at least for light duty pickups.
The J2807 standard doesn’t cover heavy-duty vehicles. GM was ready to implement the J2807 standard two years ago for its 2013 pickups, but decided not to after rival Ford Motor Co. divulged that it wouldn't comply until the launch of the 2015 Ford F-150.
Toyota has been complying with the J2807 towing standard even before the 2013 deadline. Spokesmen for Ford and Chrysler Group said their companies would comply with the J2807 standard towing standard for the 2015 model year.
“We engineered the new Silverado and Sierra 1500s to be our most capable light-duty pickups ever,” said Jeff Luke, executive chief engineer. “For 2015, we will build on that strong foundation to implement SAE J2807 while maintaining robust towing capability across the lineup.” [source: General Motors]