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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> ENGINE MECHANICAL - 4.8L, 5.3L, AND 6.0L (4 Of 4) >> Off-Vehicle Repair Instructions (Part 3) >> Valve Rocker Arm Cover Installation - Left

Valve Rocker Arm Cover Installation - Left

    IMPORTANT:
    • All gasket surfaces should be free of oil or other foreign material during assembly.
    • DO NOT use the valve rocker arm cover gasket again.
    • The valve rocker arm cover bolt grommets may be used again.
    • If the vapor vent grommet has been removed from the valve rocker arm cover, install a NEW vapor vent gourmet during assembly.
    Fig 1: View Of Valve Rocker Arm Cover Gasket
    GM1272820Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW cover gasket (504) into the left valve rocker arm cover.
  2. Install the valve rocker arm cover onto the cylinder head.
    Fig 2: View Of Valve Rocker Arm Cover
    GM1277108Courtesy of GENERAL MOTORS CORP.
    3. NOTE: Refer to Fastener Notice .
  3. Install the cover bolts with grommets.

    Tighten:  Tighten the valve rocker arm cover bolts to 12 N.m (106 lb in).

  4. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the bracket studs.
  5. Install the ignition coils and bracket assembly and studs.

    Tighten:  Tighten the ignition coil and bracket assembly studs to 12 N.m (106 lb in).

    Fig 3: View Of Ignition Coil, Bracket Assembly, Wire Harness & Bolts (Left)
    GM1342458Courtesy of GENERAL MOTORS CORP.
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