P0300 2004 Chevrolet - trailblazer ls

Question

i have a po300 code on scope for a 2004 chevrolet trailblazer ls. what does that mean? the idle is rough like it wants to choke itself out.

Answer 1

P0300 Random misfire

Random misfire is where it cylinder is not contributing, You have 6 ignition coil and 6 cylinders, when the misfie is random 2 or more are not contributing to the engine so would be running of 4 cylinder or sometimes 5 cylinder depending on what the cause of the misfire is.