The cache is not at the posted coordinates
I was looking through some geocaches and came across some interesting information, upon further examination I found I could make a puzzle from them and here it is.
Let's see if you can make some coordinates from the following:
GCR883
GC8WYM0
GCX8D5
GCVFZY
GC86990
GC6A06E
GC2RBF2
GC5V5E4
You can validate your puzzle solution with certitude.