is not. 2010–2019 Chevrolet Silverado HD 2010–2019 GMC Sierra HD 2010–2013 Chevrolet Suburban 3/4 ton 2010–2013 GMC Yukon XL 3/4 ton 2016–2020 Chevrolet Suburban 3500 2010–2020 Chevrolet Express/GMC Savana LFA The LFA is a Generation IV small block V8 truck engine. The LFA variant is used in the GM's "two mode" hybrid GMT900 trucks and SUVs, and is an all-aluminum design. It has a 10.8:1 compression ratio and produces at 5100 rpm and at 4100 rpm. Engine VIN code of 5. In 2008 this engine was selected by Wards as one of the 10 best engines in any regular production vehicle. 2008–2009 Chevrolet Tahoe Hybrid 2008–2009 GMC Yukon Hybrid 2008–2009 Cadillac Escalade Hybrid 2008–2009 Chevrolet Silverado Hybrid 2008–2009 GMC Sierra Hybrid LZ1 The LZ1 is almost entirely based on its predecessor, the LFA, but with some revisions, such as including up-integrated electronic throttle control, long-life spark plugs, GM's Oil Life System, Active Fuel Management and variable valve timing. It has the same compression ratio, power and torque ratings as its predecessor, the LFA. 2010–2013 Chevrolet Tahoe Hybrid 2010–2013 GMC Yukon Hybrid 2010–2013 Cadillac Escalade Hybrid 2010–2013 Chevrolet Silverado Hybrid 2010–2013 GMC Sierra Hybrid 3.78 in. bore blocks (2005–present) This family of blocks is just an updated version of its Generation III predecessor with Generation IV updates and capabilities. Applications of this family were mainly for trucks but did see some mild usage (with some modifications) in front-wheel-drive cars. 4.8 L LY2 The Vortec 4800 LY2 (VIN code "C") is a Generation IV small-block V8 truck engine. Like its LR4 predecessor, it gets its displacement from a bore and stroke of . The smallest member of the Generation IV engine family is unique in that it is the only member of that family that is used in trucks that do not feature variable valve timing. It has a cast-iron block. Power output is and torque is . Applications: 2008–2009 Chevrolet Express/GMC Savana 2007–2009 Chevrolet Silverado 2007–2009 Chevrolet Tahoe 2007–2009 GMC Sierra 2007–2009 GMC Yukon L20 The Vortec 4800 L20 makes more power and features variable valve timing. The system adjusts both intake and exhaust timing but does not come with Active Fuel Management. The L20 has a cast-iron block and power output is while torque is . The Vortec 4800 base engines were dropped from the Chevrolet Tahoe and GMC Yukon in favor of the 5300 with Active Fuel Management. Applications: