How do you troubleshoot a speedometer? My display for the drive selector/fog lights/ lightning bolt comes and goes. I have checked the connections in the back, everything seemed ok. Any assistance is greatly appreciated
No codes, it comes and goes, I have tried to see if there is a pattern but no luck. I have cleaned all the grounds really good when I got her last October. I know there must be more grounds, but I have cleaned the ones I could find under the hood, in the back by the battery. Also PO installed a bunch of sub woofer stuff he/she removed so I am going back into the dash area around the radio and check around there too.