LH6

Intro to the LH6 Engines The LH6 came in GM trucks and SUVs in 2005-09 and made 315 horsepower right out of the box. It’s a Gen. 4 5.3L aluminum-block engine, […]

The LH6 engine is a 5.3L Gen. IV aluminum engine that replaced the LM4 in 2005. It was the first Gen. IV LS truck engine and offered Active Fuel Management […]