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Home >> GMC >> 2006 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 983 (Heating, Ventilation, And Air Conditioning) >> Repair Instructions >> Heater Outlet Hose Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system. Refer to Cooling System Draining and Filling (Vac-N-Fill) or Cooling System Draining and Filling (Static Fill) .
  2. Remove the air intake tube.
  3. Remove the heater and surge tank hoses from the mounting clip.
    4. Fig 1: Squeezing Quick Connect Fitting Release Tabs (Plastic Collar)
    GM12777Courtesy of GENERAL MOTORS CORP.
  4. Squeeze the plastic retainer release tabs.
    5. Fig 2: Pulling Connection Apart (Plastic Collar)
    GM12778Courtesy of GENERAL MOTORS CORP.
  5. Pull the connection apart.
    6. Fig 3: Removing/Installing Heater Hose To Engine
    GM363237Courtesy of GENERAL MOTORS CORP.
  6. Remove the outlet heater hose from the water pump.
  7. Reposition the outlet heater hose clamp at the surge tank.
  8. Remove the outlet heater hose from the surge tank.
    9. Fig 4: View Of Inlet & Outlet Heater Hoses (LR4, LM7, LQ4)
    GM363118Courtesy of GENERAL MOTORS CORP.
  9. Remove the outlet heater hose.
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