Wife has a trailblazer wit the 5.3 in it now . Thing has electronic ghosts whenever it wants lol
probably one of the reasons those things have horrible resale values.
We’ve had one for 10 years with the only problem being a blown coil pack that cost $150 to fix. They’re great trucks if you take care of them.
gotta love the failblazers. It’s a GM so there is probably a fucked up connector block somewhere with loose terminals that are fretted and making intermitent connections.