RyAnn and Cricket
The angle is not very good but from the antenna my guess is the ten-lined June beetle.
Let me know if this is it?
See my comments about this beetle here on Insect Id:
This is the ten-lined June beetle. Yes they do hiss especially when disturbed. They feed off the needles of coniferous trees.
Larvae hatch, burrow down in the soil and feed on roots of shrubs, trees, require 2-3 years to reach maturity. Pupation is in underground chambers. Adults do come to lights at night so perhaps you have light on the garage?
The antenna is quite large!
