When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Can I renew or extend a GM Protection Plan?
In most cases, yes. Coverage can be renewed anytime during the manufacturer's warranty. After the manufacturer's warranty has expired, coverage can be renewed if the existing GMPP/MRP contract has at least three months and 3,000 miles of coverage term remaining.
Hope this helps. It looks like the answer is not at this point.
I would talk with Ken Fichtner and see what they can do.
I would guess that you can add on to your current one but, it will probably be very expensive.