I have an 88 z24 and I found out today that my trunk lock will not turn. I have tried penetrating oil, wd40, and white lithium grease, but the key will not turn. I can't get into the trunk to release it from the inside. How should I go about this? Would coring it with a drill then turning it with a tap work (that worked with old house locks)? I want to avoid damaging the trunk as it's a new trunklid (the lock is less than a year old in fact).
Thanks for any advice.