2001 oldmobile alero

[guest]

All my lights show on my dashboard and when i went to have i put on a machine no codes came back what could this issue be

[Guest]

hi, I can't login normally so I am going to answer this as a guest.

it's possible that the communication to the dash is compromised. Does your scanner only show engine codes or does it allow for communications with different modules? If you can use the scanner and look at the dash module see if there is communication between the modules. Or check for comm. codes