Ok, Slowbird...here's the aforementioned "long and detailed" reply on your charging and OnStar issues.
Your charging issue is probably related to the EVSE not getting a clean enough power supply. The receptacle you're using is in your garage? Is there
anything else sharing this circuit? The EVSE's are apparently (although I never had any issues) very particular to voltage sags, and also very particular about a good ground.
One evening when you have enough time set the car to the 8 amp setting and see if you have any issues - if you don't, chances are it has to do with the EVSE not being able to get a clean 12A from the receptacle. Try to figure out what else is sharing it - flip the breaker off and see what else doesn't work in your house.
As for the Onstar, well...that's the long story. Like yourself, the car was advertised by Ontario Motor Sales as having OnStar. I was given a free 3 month trial when we picked up the car, and like yourself, after getting home and trying to activate it, I couldn't.
Eventually I got on my cellphone with OnStar and after about 15 minutes, we figured out what was wrong - GM Cars 2015 and under (not just Volts, but ALL GM cars) are equipped with CDMA cellphone hardware that OnStar runs on, and all Canadian cellphone companies shut down their CDMA hardware (moving to 3G/4G) late last year.
So, the solution? Well...up until March 7 of this year you had to subscribe to a year of OnStar service and you'd get the hardware upgrade for free - kinda fair enough. People with active OnStar subscriptions also got it for free. Hhowever, after March 7 (and it seems that most dealers are not aware of this), the policy changed. And not for the better:
Yeah, $360! Plus taxes, so basically...$400. And that includes a whole (whoopdie doo) 3 months of service - basically the same as the free trial I was already offered.
Needless to say, I was
NOT PLEASED to find out that the vehicle I bought that was advertised as having OnStar...effectively doesn't have OnStar. I've had some dialogue with the dealership in the last few weeks and was hoping that Ontario Motor Sales would offer some goodwill on the issue but long story short, I was told it wasn't happening.
I am taking the car back a week today to have some other issues addressed under warranty (one of the rear brakes is not applying properly and the other doesn't appear quite right either, I'm not sure how it safetied like that honestly, but that's another story) and I've asked for a sit down with one of the OMS managers at that point to discuss the OnStar issue. I am at this point ready to pursue an OMVIC or BBB complaint on the issue as the car was advertised and sold with "OnStar" listed as a feature. It stinks to discover (as I suspect you unfortunately will as well) that in order to actually get one of the cars advertised features operational I have to spend $400 out of my own pocket.
I do have a "nuclear" option in my back pocket as well that I reserve the right to trigger if I don't get an amicable solution to the issue. It's totally above board, and it'll cost the dealer *more* than just fixing the damn OnStar system for me would.
I'm going to ask nicely one more time before pursuing the issue further though.