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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1496 (Engine Mechanical - 5.3L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Coolant Air Bleed Pipe Cleaning and Inspection

Coolant Air Bleed Pipe Cleaning and Inspection

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Do not use the engine coolant air bleed pipe and cover gaskets again. Upon installation of the pipe and covers, install NEW gaskets.
  1. Remove the sealing gaskets from the pipe.
  2. Remove the sealing gaskets from the covers.
    Fig 1: Removing Sealing Gaskets From Covers & Pipe
    G02129568Courtesy of GENERAL MOTORS CORP.
  3. Clean the pipe (2), hose (1), and covers in solvent.
    CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.
  4. Dry the pipe and covers with compressed air.
  5. Inspect the pipe and covers for damage or restrictions.
  6. Inspect the gasket and hose sealing surfaces for damage.
  7. Inspect the hose (1) for restrictions, cracking or wear.

    The hose may be used again if it is not damaged.

    Fig 2: Cleaning Pipe, Hose And Covers In Solvent
    G02129569Courtesy of GENERAL MOTORS CORP.
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