I have a 1995 Cadillac Seville STS with a Northstar engine. The heater core has been bypassed and I need to know which of the two hoses goes to what fitting on the firewall. To clarify I am working on the passenger side of the engine compartment and have new hoses to replace the old ones. The heater and cooling systems both worked before I took it to a local mechanic. Why he unhooked them is beyond me but I think it has to do with an overheating problem he had been trying to fix.
Which heater hose goes to which fitting on the firewall? on 1999 Cadillac Seville STS
Asked by for the 1999 Cadillac Seville STS
on the heater core the nipples are slightly diff sizes, so insp that to determine which hose goes where. also be careful not to damage heater core
Thank you for your response. I got it figured out.