what does cylinder misfire detected random cylinders

Question

i have a 2002 l100 no power at all does only 10 miles an hour code is p0300

Answer 1

if more than 1 cylinder is misfiring you will get a P0300, start by checking/replacing spark plugs,

you may also have a bad coil, and I this car all the coils are connect together so that might also be bad