hmmmm..... OK.... how exactly did you measure the resistance? IF the value that you just stated is correct, then this is a problem. Was the key off at the time? Still further, can you redo the measurement but this time disconnect the positive battery terminal to ensure that the PCM is not being operated in any form. The valve circuit should not be reading any value of resistance or at best a very high value.Sorry I didn't know transmission problems affected the evap system. And since the evap code came up days before the transmission codes I figured that the evap should be addressed first. That's really crazy how there was a delay in the transmission codes.
I figured if I posted all the issues I'd be told hey let's start with 1 thing first, especially with whatever happened first.
I guess I'm learning about Chevy the hard way, I was definitely warned!
Anyway as stated in my last response to you or whoever wanted the resistance checked. It was 0.03
Sorry for the inconvenience. And Thank You for the help.
As for the impact of one system on another, I don't think we are saying they are directly related.... but if you are having powering issues, those issues can impact multiple areas ESPECIALLY if the PCM is involved. Your statement about "no other fuses are impacted" is still somewhat "suspicious"..... It is quite likely some other "power in run" circuits are also seeing "continuous power" similar to the valve circuit. You probably need to revisit / recheck "hot in run" circuits to see their power status.