Tighten Gas Cap Message

I have a 2014 3.6L ATS with 3,000 km's (Canadian eh!!). The dealership replace a solenoid on the first visit and claimed the part was defective on the second d and third visit. On the fourth visit GM Canada advised the dealership to replace the fuel tank. Currently waiting a week for the part to still come in.

Has anyone else experienced a similar situation?

Thanks

Joel