Engine/Transmission (1998.5 - 2002) coolant leak in rear of cyl head

[emarsh]

2 years, 2 months old, 21k miles, original factory coolant. Using a mirror, I believe that a smallish (3/8") freeze plug, possibly a screw in pipe plug is leaking (weeping) on the rear of the cylinder head of my 02 2500. It is on the passenger side. Although still under warrenty, I refuse to take it to the dealer, they will screw up far more than they will fix. Has anyone experianced this problem, what did you do? I have used barrs stop leak on other vehicles before with very good results, the big 3 use it at the factory I am told. Opinions, recommendations, etc? thank you

 

[Big P]

Same exact plug was leaking on my truck at about 10000 mi. I had the truck towed to my dealer and they fixed it the first time with a new plug without removing the head.