Thanks!

I'm not familiar with this system yet. Just bought this 91 Riviera two weeks ago and just received a shop manual yesterday. It's pretty darn thorough and is about a 1000 pages.

Hit the scrapyard today and picked up some parts from the one and only riviera they had there and decided to grab the instrument cluster. It's pretty slick being all digital VFD. It's uses the serial data to translate everything based on the pinout and wiring diagram.

I was kind of wondering if it would interface with the 1227747 ecm serial data in my truck.