Hello and thank you for using just answer. If it is coolant loss you are experiencing then there are a few things to check here. First I would recommend you clean the engine area of colant so you can properly trace. Leak dye additive to the system can also be of great help, a UV light can illuminate the dye once the system is pressure tested. This engine was used on 2 production GM vehicles, the cadillac catera and the Saturn L series engines. One common leak and failure on this engine is for the oil cooler to leak. It is located in the center of the block under the intake manifold between the 2 banks. The seal around the upper plate that holds the cooler in coolant tends to start leaking and needs to be removed/resealed. Look very closely to see if the coolant seems to be running down the block.
ASE Certified Technician
ASE Certified, 10+ years experience, Lexus and Toyota Certified