I just purchased a 2006 yukon denali and have been having some random dash lights. I must say It was a last minute, must have a vehicle today buy, therefore I had no time to research.
The service ride control light stays on. compressor works fine when bench tested, fuses good, relay good.
Check engine light comes on at higher rpms and/or above 60 mph but it's random flashes.
Air bag light on/off randomly, but seems to show when hitting bumps.
I do have an electrical engineering degree so I know some about general circuits, but in no way does this make me a mechanic. IMO there's no substitute for experience.
Seems like the ECM to me...thoughts? Can it be tested? If it's bad, is it worth upgrading?
By the way the vehicle runs fine even when the lights show and it's pulling the p0300 misfire code
The service ride control light stays on. compressor works fine when bench tested, fuses good, relay good.
Check engine light comes on at higher rpms and/or above 60 mph but it's random flashes.
Air bag light on/off randomly, but seems to show when hitting bumps.
I do have an electrical engineering degree so I know some about general circuits, but in no way does this make me a mechanic. IMO there's no substitute for experience.
Seems like the ECM to me...thoughts? Can it be tested? If it's bad, is it worth upgrading?
By the way the vehicle runs fine even when the lights show and it's pulling the p0300 misfire code
