The 5.3-liter power plant in question was introduced in 2006, not in 2010, and that's four more model years' worth of engines to worry about. With that in mind, ...

The Gen III Vortec 5.3 was produced in four forms: the LM4, LM7, L59, and L33. They all share bore, stroke, and design. The biggest departure in these particular models is the L33, which uses an ...