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Hummer H3For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.
I have a 07 hummer h3 and I was working on my engine bay and I notice on my coolant reservoir it has two holes . One is going to the radiator and the one is just hanging nothing connected to it. I'm not sure where it goes and was wondering if anyone can help me.
coolant reservoir
