I was planning to scan my 2005 Colorado today for the first time in almost 6 months. Hooked up scanner to truck and connected scanner, and the only thing working in the Histogram display is Main Spark--Timing Advance. Everything else says "Histogram not supported with current loaded parameters" ???
I have always used the Default Config that automatically loads when I connect---never had to load anything or add custom pids---everything was always there and always worked. What is going on????