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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1497 (Engine Mechanical - 4.2L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Piston, Connecting Rod, and Bearing Removal

Piston, Connecting Rod, and Bearing Removal

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required: 

J 41556  Connecting Rod Guides

  1. Mark the piston with the number of the cylinder from which the piston is being removed.
  2. Mark the connecting rod and the connecting rod cap with the cylinder position. Also mark the orientation. This will ensure the caps and connecting rods are re-assembled properly.
  3. Remove the connecting rod bolts.
  4. Remove the connecting rod cap and bearing half.
    Fig 1: Removing Connecting Rod Cap And Bearing Half
    G02128694Courtesy of GENERAL MOTORS CORP.
  5. Install J 41556  on the connecting rod.
    Fig 2: Installing Connecting Rod Guides On Connecting Rod
    G02128695Courtesy of GENERAL MOTORS CORP.
  6. Remove the connecting rod and piston assembly. Push out the assembly.
  7. Remove J 41556. 
    Fig 3: Removing Connecting Rod And Piston Assembly
    G02128696Courtesy of GENERAL MOTORS CORP.
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