A current fault would effect every component that is apart of that circuit.
The fault code remained upon startup
You are not accounting for how the Solenoid is controlled which is via PCM.
The fault is provoked upon continuous load in 6th gear with an increase in elevation, or driving up a hill in 6th gear.
Upon which, the PCM has what seems to be a calculation fault with the mapping tables, and simply says fuck it, and throws the CEL, and viola no more boost and we have a P0299 code.
We then bitch slap the PCM into a coma, by cutting all power while moving, and then hit with a bucket of Ice cold water via popping the clutch. AND BAM!!
We have full boost again, the P0299 code remain in fault memory, but the problem is gone.. That is until the PCM cant do the math any more.
If the Boost Control Solenoid was in fact the problem, I am more than sure FCA would not be replacing Turbos that cost more than 10 times what they pay for the Solenoid.
The only reason they were replacing the Turbos was because dealerships are not equipped with people certified to work on the Turbos.
GM had the same exact problem with the Cruze.
GM later sent out TSB advising not to replace the Turbos under Warranty and merely adjust the Wastegate.
Thus I am completely aware of the Wastegate actuator adjustment needing to be preformed, as I did that years ago.
Just in case sometime down the road I do need a new boost control Solenoid.
I have purchased an almost identical Boost Control Solenoid for a Chevy Cruze which I plan to test.
Very slight design difference, and can be purchased under $35 which is on par with the global price.
I just need to get what appears to be a Bosch EV1 plug.
It bolts directly in place of the factory solenoid on the passenger side motor mount too.
View attachment 114946
For those of you that are wanting to give this a try.
You can compare to my earlier photos of our Boost Control Solenoid in this thread.
Part #:
Chevy / AC Delco 55574902
https://www.carid.com/acdelco/gm-or...rcooler-bypass-valve-mpn-55574902.html?singleid=929899078&url=13354174#features
https://www.amazon.com/ACDelco-55574902-Equipment-Turbocharger-Intercooler/dp/B007QB8K9E
Bosch EV1 Connector
https://www.google.com/search?num=5...M_enUS797US797&biw=1920&bih=949&ei=DJSnW6nXHYK18APXkoLQBw&q=bosch+ev1+connector