I drilled out the stud that was broke off, tapped it & installed a helicoil....the vehicle is back together , but, when I crunk it up and started to inspect the job I noticed that there is coolant slowly pouring from the bolt head that I drilled & tapped.....the motor sounds normal when running???? did I not tourqe the bolts enough or did I drill thru and into a cooling port in the head?

Boating - Thule - 2008 Chevy Silverado - Regular cab - Xsporter Truck Rack