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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1670 (Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L - Repair Instructions - Off Vehicle (2 Of 3)) >> Engine Coolant Air Bleed Pipe and Hole Cover Installation

Engine Coolant Air Bleed Pipe and Hole Cover Installation

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Coolant Air Bleed Pipe Seal
    GM1552485Courtesy of GENERAL MOTORS CORP.
    NOTE: Position the O-ring seal onto the nipple portion of the pipe.
  1. Install the seals (308) onto the engine coolant air bleed pipe and covers.
    2. Fig 2: Engine Coolant Air Bleed Pipe
    GM1401993Courtesy of GENERAL MOTORS CORP.
  2. Install the pipe (307) and seals (308).
    3. CAUTION: Refer to Fastener Caution .
  3. Install the bolts (309) and tighten to 12 N.m (106 lb in).
    4. Fig 3: Engine Coolant Air Bleed Cover Bolts
    GM1402001Courtesy of GENERAL MOTORS CORP.
    NOTE: Production engines use a rivet-type plug at the top rear coolant passage of each cylinder head. If service of a leaking plug is required, it is necessary to remove the cylinder head from the engine to properly remove the plug. refer to Cylinder Head Disassemble .
  4. As required, install either a new plug or the earlier design coolant air bleed covers (313) and gaskets (308). Refer to Cylinder Head Assemble .
  5. Install the bolts (312).
  6. Tighten the cover bolts to 12 N.m (106 lb in).
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