For the 2024 model year of the GMC Sierra 1500, the turbocharged 2.7L I4 L3B gasoline engine was given the TurboMax nomenclature in an effort to brand the boosted four-pot. Now, General Motors has extended the TurboMax’s warranty for properly equipped units of the 2024 GMC Sierra 1500.
Designed to highlight GM’s confidence behind the engineering and design 2.7L L3B engine, The General is extending the TurboMax’s powertrain warranty from five years/60,000 miles to five years/100,000 miles, as indicated in the 2024 GMC Limited Warranty and Owner Assistance Information booklet.
“As we’ve said before, we engineered TurboMax to deliver the durability and performance expected by our truck customers,” Assistant Chief Engineer Kevin Luchansky was quoted as saying. “The result continues to turn skeptics into believers with best-in-class 430 pound-feet of torque and 310 horsepower. The whole team is proud of this engine, and this warranty extension exudes our confidence.”
For those who may be unaware, the 2.7L L3B is offered as the starting powerplant option for the 2024 GMC Sierra 1500. Available on Pro, SLE, and Elevation trim levels, the TurboMax is intended to cover owners’ needs. Only offered in the High Output tune, the boosted four-banger develops a maximum output of 310 horsepower and 430 pound-feet of torque, along with an available maximum tow rating of 9,500 pounds.
Other engine options for the 2024 GMC Sierra include the naturally aspirated 5.3L V8 L84 gasoline engine, rated at 355 horsepower and 383 pound-feet of torque, the naturally aspirated 6.2L V8 L87 gasoline engine, rated at 420 horsepower and 460 pound-feet of torque, and the 3.0L I6 LZ0 turbodiesel Duramax, rated at 305 horsepower and 495 pound-feet of torque.
Notably, the 2.7L L3B develops more torque than the 5.3L L84, making the latter powerplant largely obsolete.