LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 427 (Engine Mechanical - 4.8L, 5.3L, & 6.0L (Unit Repair)) >> Repair Instructions >> Engine Valley Cover Cleaning and Inspection

Engine Valley Cover Cleaning and Inspection

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: Do not reuse the valley cover knock sensor oil seals. Install NEW oil seals during assembly.

Do not reuse the valley cover gasket. Install a NEW gasket during assembly.

  1. Remove the knock sensor oil seals (1) from the valley cover (2).
  2. Clean the valley cover in solvent.
    CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.
  3. Dry the valley cover with compressed air.
  4. Inspect the gasket sealing surfaces for excessive scratches or gouging. Refer to Replacing Engine Gaskets .
  5. Inspect the valley cover oil seal bores for excessive scratches or gouging.
    Fig 1: Knock Sensor Oil Seals & Valley Cover
    G01674814Courtesy of GENERAL MOTORS CORP.
scientia non olet · About LEMON Manuals