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Home >> Chevrolet >> 2004 >> Avalanche 2500 >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Mechanical (Repair Instructions -- 1 Of 3) -- 4.8L, 5.3L & 6.0L) >> Repair Instructions (On-Vehicle & Off-Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Left >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
IMPORTANT:
  • All gasket surfaces should be free of oil an/or other foreign material during assembly.
  • DO NOT reuse the valve rocker arm cover gasket.
  • If the PCV valve grommet has been removed from the rocker cover, install a NEW grommet during assembly.
  1. Install a NEW rocker cover gasket (1).
    2. Fig 1: Rocker Arm Cover Gasket
    GM490696Courtesy of GENERAL MOTORS CORP.
  2. Install the valve rocker arm cover.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Tighten the rocker arm cover bolts.

    Tighten:  Tighten the bolts to 12 N.m (106 lb in).

    4. Fig 2: View Of Valve Rocker Arm Cover - Left
    GM832209Courtesy of GENERAL MOTORS CORP.
  4. Install the PCV hose.
    5. Fig 3: View Of PCV Hose
    GM1201537Courtesy of GENERAL MOTORS CORP.
  5. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent to the threads of the bracket bolts.
  6. Install the ignition coil bracket.
  7. Install the ignition coil bracket studs.

    Tighten:  Tighten the studs to 12 N.m (106 lb in).

    8. Fig 4: View Of Ignition Coil Bracket & Studs - Left
    GM832184Courtesy of GENERAL MOTORS CORP.
  8. Install the spark plug wires to the ignition coils.
  9. Position the engine harness, if necessary.
  10. Install the harness clips (1).
  11. Connect the main electrical connector (2) to the ignition coil wire harness.
  12. Install the CPA lock.
    13. Fig 5: View Of Main Ignition Coil Wire Harness Connector & Clips
    GM757686Courtesy of GENERAL MOTORS CORP.
  13. Install the engine sight shield, if required. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L (RPO LQ4))  or Engine Sight Shield Replacement (6.0L (RPO LQ9)) .
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