GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
GMC_Truck
🢒
2000
🢒
Savana
🢒
HVAC
🢒
HVAC Systems - Manual
🢒 Heater Water Valve Replacement
Tools Required
J 39529
Heater Hose Pliers
Removal Procedure
Drain the engine coolant. Refer to
Cooling System Draining and Filling
in Engine Cooling.
Remove the hose clamps from the outlet pipe and the inlet pipe using the
J 39529
.
Disconnect the heater inlet pipe and the outlet pipe from the by-pass valve(s).
Remove the by-pass valve (3) from the vehicle.
Installation Procedure
Install the bypass valve (3) into the vehicle.
Connect the heater inlet pipe and the outlet pipe to the bypass valve(s).
Install the hose clamps using the
J 39529
.
Fill the engine coolant. Refer to
Cooling System Draining and Filling
in Engine Cooling.
Verify that the system has no leaks.