To start I have a 2006 Cadillac CTS.
I guess I'll explain the problem first before anything else. It doesn't matter what weather conditions I'm driving in, the speakers always seems to cut out for 1-5 seconds then come back on. This is very annoying because I can't even make it through a single...
I live in Everett, WA
I did a Head Gasket Block test and the Blue test fluid turned yellowish green.
White smoke emitting from exhaust. Turning on, the car rumbles/shakes a little, then subsides.
Codes shown on screen (old) P0155, P0446, and (new), as of 2 days ago, P0300.
The 1st 2 shown...