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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1023 (Engine Mechanical - 6.6L (Lb7) (Repair Instructions 1 Of 4)) >> Repair Instructions (On-Vehicle & Off Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Lower Left >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the upper left valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Upper Left .
  2. Disconnect the fuel injector electrical connectors.
    3. IMPORTANT: Do not drop the injector harness bolts in the cylinder head oil return ports.
  3. Remove the injector harness bracket bolts for both injector harnesses.
    4. Fig 1: View Of Injector Harness Bracket & Bolts (Lower Left)
    GM660472Courtesy of GENERAL MOTORS CORP.
  4. Loosen the encapsulated injector wire terminal nuts on each injector.
  5. Remove the injector harnesses.
  6. Remove the lower valve rocker arm cover bolts.
  7. Remove the lower valve rocker arm cover.
  8. Remove the gasket from the lower valve rocker arm cover.
    9. Fig 2: View Of Lower Valve Rocker Arm Cover, Bolts & Gasket (Lower Left)
    GM660473Courtesy of GENERAL MOTORS CORP.
  9. Inspect the lower valve rocker arm cover gasket for damage, replace if necessary. Otherwise reuse the old gasket.
  10. If required, clean and inspect the lower valve rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection - Lower .
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