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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 13 (Engine Mechanical (Repair Instructions -- 2 Of 3) -- 4.8L, 5.3L & 6.0L) >> Repair Instructions (Off-Vehicle - Part 2) >> Coolant Air Bleed Pipe Cleaning and Inspection

Coolant Air Bleed Pipe Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.
    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.
  3. Fig 1: View Of Air Bleed Pipe Sealing Gasket
    GM64262Courtesy of GENERAL MOTORS CORP.
  4. Clean the pipe (307), hose (311), and covers in solvent.
  5. CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
  6. Dry the pipe and covers with compressed air.
  7. Inspect the pipe and covers for damage or restrictions.
  8. Inspect the gasket and hose sealing surfaces for damage.
  9. Inspect the hose (311) for restrictions, cracking or wear.

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

  10. Fig 2: View Of Engine Coolant Air Bleed Pipe, Hose & Clamps
    GM1277104Courtesy of GENERAL MOTORS CORP.