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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1400 (Engine Mechanical - 3.1L V6 - VIN (J)) >> Repair Instructions >> On-Vehicle repair Instructions >> Valve Rocker Arm Cover Replacement - Left >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
  2. Remove the left spark plug wires. Refer to SPARK PLUGS in Removal & Installation.
  3. Remove the thermostat bypass hose and the pipe. Refer to THERMOSTAT BYPASS PIPES REPLACEMENT in Engine Cooling.
  4. Remove the positive crankcase ventilation (PCV) valve from the left valve rocker arm cover.
  5. Remove the left valve rocker arm cover bolts.
  6. Remove the left valve rocker arm cover.
    Fig 1: Removing Left Valve Rocker Arm Cover
    G01967889Courtesy of GENERAL MOTORS CORP.
  7. Remove the left valve rocker arm cover gasket.
  8. Clean the valve rocker arm cover.
  9. Clean the valve rocker arm cover gasket mating surfaces.
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