I have replaced the mass air flow sensor twice. Thinking i might have a bad Sensor when i replaced it the first time so i bought another one and replaced it. I am still getting the code for bad mass air flow sensor. Any ideas what i can do to resolve the issue/// Thanks

 

If the sensor itself is good, then I would start looking hard at the connector that plugs into it, and trace the wiring harness back from there to the computer. It is likely either a wiring harness issue or the ECM itself. Unfortunately, I don't know of any freely available wiring diagrams for a 2018 Silverado.

 

Thanks, JF. Was afraid that would be the answer. Hopefully not the ECM

 

Did your original MAF go bad and had to be replaced? Asking bc I've heard trucks only like OG for this part. Look at the brand and if not GM, try a new one from the dealer parts desk.