I have been experiencing a mysterious coolant loss in my '97 Tahoe. I don't know where its coming from, but I know where its not!... Its not from the
water pump radiator hoses in front heater lines heater/radiator head gasket freeze plugs
All I can tell most of the time is that I have to add coolant... once every couple of weeks and that sometimes there is a small puddle of coolant under the left rear of the engine... I have attempted to trace it, but during a pressure test of the system the leak is present, but the maze of hoses and wires on the top of the engine makes it very difficult.
A parts guy at the local GMC dealership said that it could be the intake manifold gasket, since they do sell quite a few of those. Is there anything else in that vicinity that can cause such a leak?
thanks