I've got a 94 Silverado K1500 4WD with a frustrating coolant leak. I've got it under pressure (15psi) and there's almost no drop over time (1 hr). I can see drips of coolant near the transmission but couldn't find the source. The baffling part is this: There are two struts to the bottom of the bellhousing and where they attach to the bellhousing both bolts have a drop of coolant on them. The struts themselves are not wet. Then laying there on my back I notice a drop of coolant appear on one of the transmission coolant lines! It appears that the lines at one time had battery acid on them because they look corroded. But the coolant drip is definately coming from one of those lines. Do those lines have coolant in them or transmission fluid? Also, why would the strut attachment bolts have fluid on them? There is no spray of coolant. It's as though coolant is coming from inside the bellhousing. Answers please!!!