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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Mechanical - 4.3L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Left >> Removal Procedure

Removal Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Engine Wiring Harness Bracket & Nuts
    GM310241Courtesy of GENERAL MOTORS CORP.
  1. Remove the engine wiring harness bracket nuts.
  2. Remove the engine wiring harness bracket.
    3. Fig 2: View Of TP Sensor, IAC Motor, ECT Sensor, Control Port Injector Module & Engine Harness Clip Bolt
    GM782174Courtesy of GENERAL MOTORS CORP.
  3. Remove the engine wiring harness clip bolt (4).
  4. Disconnect the engine coolant temperature (ECT) sensor electrical connector (5).
  5. Reposition the engine wiring harness and bracket.
    6. Fig 3: Locating Power Brake Booster Vacuum Hose
    GM869713Courtesy of GENERAL MOTORS CORP.
  6. Disconnect the power brake booster vacuum hose from the vacuum fitting.
    7. Fig 4: Locating PCV Valve Hose At Valve & Rocker Cover
    GM869710Courtesy of GENERAL MOTORS CORP.
  7. Remove the positive crankcase ventilation (PCV) valve hose from the valve cover and rocker cover.
    8. Fig 5: Rocker Arm Cover
    GM869729Courtesy of GENERAL MOTORS CORP.
  8. Remove the rocker arm cover bolts.
  9. Remove and discard the rocker arm cover bolt grommets, if necessary.
  10. Remove the rocker arm cover.
    11. Fig 6: View Of Rocker Arm Cover And Gasket
    GM328573Courtesy of GENERAL MOTORS CORP.
  11. Remove and discard the rocker arm cover gasket.
  12. Clean and inspect the rocker arm cover, if necessary. Refer to Valve Rocker Arm Cover Cleaning and Inspection .
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