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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1019 (Engine Mechanical - 4.8L, 5.3L & 6.0L (Repair Instructions - 1 Of 3)) >> Repair Instructions (On-Vehicle & Off-Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Engine Front Cover Replacement >> Installation Procedure

Installation 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.
IMPORTANT:
  • Do not reuse the crankshaft oil seal or front cover gasket.
  • Do not apply any type of sealant to the front cover gasket (unless specified).
  • The special tool in this procedure is used to properly center the front crankshaft front oil seal.
    • All gasket surfaces should be free of oil or other foreign material during assembly.
    • The crankshaft front oil seal MUST be centered in relation to the crankshaft.
    • An improperly aligned front cover may cause premature front oil seal wear and/or engine oil leaks.
  1. Apply a 5 mm (0.20 in) bead of sealant GM P/N 12378190, or equivalent 20 mm (0.80 in) long to the oil pan to engine block junction.
  2. Install the front cover gasket and cover.
  3. Install the front cover bolts until snug. Do not overtighten.
    4. Fig 1: View Of Front Cover & Bolts
    GM832977Courtesy of GENERAL MOTORS CORP.
  4. Install the oil pan-to-front cover bolts until snug. Do not over tighten.
    5. Fig 2: View Of Oil Pan-To-Front Cover Bolts
    GM451709Courtesy of GENERAL MOTORS CORP.
  5. Install J 41476  to the front cover.
  6. Align the tapered legs of the J 41476  with the machined alignment surfaces on the front cover.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
    Fig 3: View of J 41476 Installed To Front Cover
    GM451712Courtesy of GENERAL MOTORS CORP.
  7. Install the crankshaft balancer bolt until snug. Do not overtighten.

    Tighten: 

    1. Tighten the oil pan to front cover bolts to 25 N.m (18 lb ft).
    2. Tighten the engine front cover bolts to 25 N.m (18 lb ft).

  8. Remove the J 41476  .
  9. Install a NEW crankshaft front oil seal. Refer to Crankshaft Front Oil Seal Replacement .
  10. Install the water pump. Refer to Water Pump Replacement (4.8L, 5.3L, and 6.0L Engines) in Engine Cooling.
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