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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1444 (Engine Mechanical - 5.3L (Lm4)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Engine Front Cover Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. 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.
    Fig 1: View Of Front Cover & Gasket
    GM64278Courtesy of GENERAL MOTORS CORP.
  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. Install the oil pan-to-front cover bolts until snug. Do not over tighten.
    5. Fig 2: View of J 41476 Installed To Front Cover
    GM451712Courtesy of GENERAL MOTORS CORP.
  5. Install J 41476  to the front cover. See Special Tools and Equipment .
  6. Align the tapered legs of the J 41476  with the machined alignment surfaces on the front cover. See Special Tools and Equipment .
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  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  . See Special Tools and Equipment .
  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 (LM4) in Engine Cooling.
  11. Install the A/C compressor and bracket. Refer to Compressor Replacement (LM4) in Heating, Ventilation, and Air Conditioning.
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