The Petit Griffon is visible on the Sierra Crest skyline from Rock Creek Lake but really comes into view at Ruby Lake. You are seeing the East summit from this direction. Most climbers top out on the higher West summit. View the enlarged version of the image below to see the two summits.
Getting ThereSierra East Side, Tom's Place, up Rock Creek Rd, hike Mono Pass Trail, turn off to Ruby Lake, leave trail and skirt Ruby on the east, then cross-country to Mills Lake at 11,600'. The approach to Mills Lake will take 3-4hrs with heavy packs. The Griffon will be silhouetted on the skyline.
RouteThere are a few routes up the to the West summit but I'm not yet aware of an East summit ascent. The spire does not get climbed a lot. I topped out in July of 2014 and no one had signed the summit register in 2 years. There is an orange Pelican box and 5 rap slings on the west summit block (July '14). Some of the slings need to be removed.
Do not trust belay/rap anchors on the rock pitches. Inspect them and bring long slings to reinforce them.
The rap off the West summit to the couloir notch is ~180', so unless you have two 60M ropes, rap to the belay station at the top of P1 of the NW Side route, then do a second rappel.
If you've climbed the East summit, or other West summit routes; please add a route page.