In Transmission Fluid
I want to install a Preston radiator flush kit on my 192 GMC Sarari 4.3L. Is the correct hose theone directly behind the Transmission dip stick and up against the firewall?
Look for your two heater core hoses that come out of the firewall. Trace the one that goes into the top of the engine and may be next to where the therostat is. That is the ho…se that you would want to cut in half and install the T fitting that you get with the flush kit. This way you can back flush your system. ( Full Answer )