LS2 in my Trailblazer SS is acting odd. At times is refuses to start unless I pull the IGN COILS fuse and replace. Twice in the last 3 days this has happened.

9 out of 10 times the car starts fine, and it seems to run fine once it's started. Any ideas on what is going on here?

The fuses don't appear to be blown as both times I swapped them with the headlight circuit and the headlights are working fine.