Changed cats all of them and the coils then rear vcm assembly spool have changes map sensor all of this and the check engine light still comes on and there is cylinder misfire and still codes the rear exhaust vcm solenoid ANYONE please point me in toward a fix. One more thing the vcm is active upon cold starting like it's stuck on. Temp gauge functions bit if unplugged at therm housing the gauge climbs to hot and maxes out.

 

Would you post the actual scanner codes on here?