When I get a check engine on my chassis, I can retrieve the code using my dash display and toggling thru the engine diagnostics. But this must be done before I shut the engine off. After the engine is shut off you can only read the codes with a code reader.
Dan & Sharon (Zena-Our Yorkie Puppy)(Kasey-Our Yorkie Puppy RIP 9Jan05-26Jul17) On the Road (2012 Journey 36M, 2020 Chevy Equinox)
USN-Ret ('65-'93) Fulltimers, Class of 2012