2007 GMC Yukon temporarily disable vehicle

What would be the best way to temporarily disable the above vehicle nightly, the vehicle is mine I acquired in a will and my sister (lives in another state) reported to me that she can't find the second set of keys, and is afraid a relative took them. I realize about battery cable, spark plug wires, etc, but the vehicle is loaded electronically, and afraid I'll have to reset some features everytime. Is their something like a fuse or something that could easily be used to enable and disable for a few days until I get the paperwork in order?