Engine Mechanical problem
1997 Chevy Cheyenne V8 Two Wheel Drive Automatic 193000 miles

replaced oil pan and valve cover gaskets, all are tight and not leaking, oil (not trans fluid) is leaking from tourque cover plate (from small hole in front lower center of plate) if this could be from the rear main gasket what is a good estimate cost for a repair, after changing the oil pan gasket once I really dont want to attempt this again.