The above coordinates do not produce the true location to this cache.. It is near the downtown area of Pontiac. To find the exact you must collect information from the POI Pontiac Adventure Lab Cache. The cache is a bonus cache to the Lab cache if you choose to find it, you will find a clue at each of the 5 locations of the lab cache, upon completion of each stage. Each clue will reveal a number to plug in to the following coordinate.
N40 52.AFC
W088 37.DBF