GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Cadillac
🢒
2009
🢒
STS
🢒
HVAC
🢒
Heating, Ventilation, and Air Conditioning
🢒 Heater Inlet Hose Replacement
Heater Inlet Hose Replacement LH2
Tools Required
J 38185
Hose Clamp Pliers
Removal Procedure
Drain the cooling system. Refer to
Cooling System Draining and Filling
.
Lower the vehicle.
Remove the injector sight shield. Refer to
Fuel Injector Sight Shield Replacement
.
Using
J 38185
, disengage the hose clamp and disconnect the heater inlet hose (2) from the thermostat housing.
Using
J 38185
, disengage the hose clamp and disconnect the heater inlet hose (2) from the heater pipe assembly.
Remove the heater inlet hose (2).
Installation Procedure
Install the heater inlet hose (2).
Using
J 38185
, disengage the hose clamp and connect the heater inlet hose (2) to the heater pipe assembly.
Using
J 38185
, disengage the hose clamp and connect the heater inlet hose (2) to the thermostat housing.
Install the injector sight shield. Refer to
Fuel Injector Sight Shield Replacement
.
Fill the cooling system. Refer to
Cooling System Draining and Filling
.
Heater Inlet Hose Replacement LY7
Special Tools
J 38185
Hose Clamp Pliers
Removal Procedure
Drain the cooling system. Refer to
Cooling System Draining and Filling
.
Remove the battery tray. Refer to
Battery Tray Replacement
.
Remove the cowl panel retaining bolts.
Remove the cowl panel.
Using
J 38185
slide the clamp away from the base of the heater inlet hose.
Remove the inlet heater hose from the heater core.
Using
J 38185
slide the clamp away from the base of the heater inlet hose.
Remove the clamp and hose from the engine cooling thermostat assembly.
Installation Procedure
Install the inlet heater hose to the engine cooling thermostat assembly.
Using
J 38185
slide the clamp back into the original position on the hose.
Install the inlet heater hose to the heater core.
Using
J 38185
slide the clamp back into the original position on the hose.
Install the cowl panel.
Caution:
Refer to
Fastener Caution
in the Preface section.
Install the cowl panel retaining bolts and tighten to
6 N·m (13 lb ft)
.
Install the battery tray. Refer to
Battery Tray Replacement
.
Fill the cooling system. Refer to
Cooling System Draining and Filling
.