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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1392 (Engine Mechanical - 4.3L) >> Repair Instructions - On Vehicle >> Valve Rocker Arm Cover Replacement - Left Side >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Engine Wiring Harness Bracket Bolt
    GM2056546Courtesy of GENERAL MOTORS CORP.
  1. Remove the engine wiring harness bracket bolt (1).
  2. Position the engine wiring harness bracket (2) and engine harness aside.
    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. Disconnect the power brake booster vacuum hose from the vacuum fitting.
    7. Fig 3: 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 4: Identifying 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 5: View Of Rocker Arm Cover & 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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