Removal Procedure

WARNING: This page is about a different car, the 2003 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM .
Use J 38185 in order to reposition the heater hose outlet clamp.
Disconnect the heater outlet hose (2) from the outlet pipe.

Fig 1: Disconnecting Heater Outlet Hose From Outlet Pipe
Courtesy of GENERAL MOTORS CORP.
Use J 38185 in order to reposition the heater core outlet hose clamp.
Disconnect the heater outlet hose from the heater core.
Remove the heater outlet hose.

Fig 2: Disconnecting Heater Outlet Hose From Heater Core

Courtesy of GENERAL MOTORS CORP.