Hello

[Doug_Tramell]

Hi everyone. I'm trying to learn how to tune my 1990 Check truck with a 7427 PCM

[1project2many]

Hello.

Welcome to the forum. What tools do you have to work with?

[Queencityspeed]

Welcome. Lots of great people and tech here. Enjoy.

[Doug_Tramell]

I have borrowed a Genius G540 and a cable ALDL to USB.

[Playtoy_18]

Hey Doug,it's me!
Figuring it out? Ended up buying another LM1 for parts to repair mine,just waiting on it to show up and i'll bring it by.
Getting the hang of it?