LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1448 (HVAC Systems - General Servicing) >> Repair Instructions >> Coolant Bypass Valve Replacement >> Installation Procedure

Installation Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Hoses
    GM735781Courtesy of GENERAL MOTORS CORP.
  1. Apply coolant to the end of the heater inlet hoses.
    2. IMPORTANT: When installing a new heater inlet hose, place the clamps on the hose before installing the hose to the inlet hose fitting at the engine block.
  2. Install the heater inlet hose to the inlet hose fitting at the engine block.
  3. Install the coolant bypass valve (6).
    4. NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Install the nut retaining the coolant bypass valve to the cowl.

    Tighten:  Tighten the nut to 10 N.m (89 lb in).

  5. Install the vacuum hose to the coolant bypass valve.
  6. Install the inlet heater hose to the engine block.
  7. Position the inlet heater hose clamp at the engine block using J 38185  .
  8. Connect the heater inlet hose to the heater core.
    9. IMPORTANT: Firmly push the quick connect onto the heater core pipe until you hear an audible click.
  9. Install the coolant recovery reservoir. Refer to Coolant Recovery Reservoir Replacement in Engine Cooling.
  10. Fill the engine cooling system. Refer to Draining and Filling Cooling System (LL8) or Draining and Filling Cooling System (LM4) in Engine Cooling.
scientia non olet · About LEMON Manuals