Sierra Classic 1500 2WD V8-5.3L Hybrid (2007)
Heater Hose: Service and Repair
Heater Inlet Hose Replacement (With RPO Code HP2 Rear)
Heater Inlet Hose Replacement (W/ HP2 Rear)
Tools Required
J 43181 Quick Connect Connector Removal Tool
Removal Procedure
1. Drain the cooling system. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System (w/RPO HP2) Draining
and Filling Cooling System (Vac-N-Fill).
2. Using the J 43181 disconnect the heater hose from the heater core inlet.
1. Install the J 43181 to the heater core pipe.
2. Close the tool around the heater core pipe.
3. Firmly pull the tool into the quick connect end of the heater hose.
4. Firmly grasp the heater hose. Pull the heater hose forward in order to disengage the hose from the heater core.