GM Serial 2 Diagnostics: 2006 Chevy Silverado using a Multimeter

I decided to show you how to diagnose a Serial 2 communications problem using a Auto Ranging Multimeter. I hope you find this useful and if you like it subscribe for more useful tips and tricks.

[@frankbinsley1315]

Thank you so much. I dont own a scope either and im dealing with class 2 comm issues on my 06 envoy 5.3..thank you so much

[@ranger.auto.repair]

Your welcome!

[@howardiko7156]

400 mill-i-volts. Hey a scope from china would cost half what that Snap On was.

[@ranger.auto.repair]

How do you figure when my meter was free and it got the job done? I’d never use a scope especially one from china.