NMTRUCKER
Well-known member
This is an interesting read I found on the GM Tech Line. I hope I copied it correctly.
https://gm-techlink.com/wp-content/uploads/2020/09/GM_TechLink_15_August_2020.pdf
https://gm-techlink.com/wp-content/uploads/2020/09/GM_TechLink_15_August_2020.pdf