REPAIR INSTRUCTIONS > HEATER INLET HOSE REPLACEMENT (PUMP TO HEATER
CORE-HP2)
Fig 1: Heater Inlet Hose Replacement (Pump to Heater Core-HP2)
Courtesy of GENERAL MOTORS CORP.
Callout Component Name
Preliminary Procedure
1. Drain the cooling system. Refer to Cooling System Draining and Filling (Static Fill) .
2. Remove the upper intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield
Replacement .
3. Remove the air cleaner. Refer to Air Cleaner Assembly Replacement .
4. Remove the air cleaner resonator outlet duct. Refer to Air Cleaner Resonator Outlet Duct
Replacement .
1
Heater Inlet Hose Quick Disconnect
Procedure
1. Squeeze the plastic retainer release tabs and pull the connection apart.
2. The joint should audibly click upon reassembly and the technician should pull back on
the joint to ensure it's engaged properly.