I have two 9000s, both have issues with the SID - CEL display. On one the display has gone off completely, it was working and just stopped. The other goes, nice and bright sometimes, dull other times, and goes off sometimes. This second one can be coaxed to go again with tap on the dash near the display.
I guess this means the dashout, but what am I looking for after that.
I guess this means the dashout, but what am I looking for after that.