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Home >> Chevrolet >> 2020 >> Express 2500 LS, 6.0L Eng VIN G >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Engine Mechanical - 6.0L (L96 LC8)) >> Repair Instructions - On Vehicle >> Valve Rocker Arm and Push Rod Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:

When reusing the valve train components, always install the components to the original location and position.

Valve lash is net build, no valve adjustment is required.

  1. GM260141Courtesy of GENERAL MOTORS COMPANY

    Lubricate the valve rocker arms and pushrods with clean engine oil.

  2. Lubricate the flange of the valve rocker arm bolts with clean engine oil.

    Lubricate the flange or washer surface of the bolt that will contact the valve rocker arm.

  3. Install the valve rocker arm pivot support.
  4. GM260142Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Make sure that the pushrods seat properly to the valve lifter sockets.

    Install the pushrods.

  5. GM1814082Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Make sure that the pushrods seat properly to the ends of the rocker arms. DO NOT tighten the rocker arm bolts at this time.

    NOTE:

    The intake rocker arms (1, 2) have an offset design

    Install the rocker arms (1, 2) and bolts as shown.

  6. GM661566Courtesy of GENERAL MOTORS COMPANY

    Rotate the crankshaft until the number one piston is at top dead center (TDC) of the compression stroke.

    In this position, cylinder number one rocker arms will be off lobe lift, and the crankshaft sprocket key will be at the 1: 30 position.

    The engine firing order is 1, 8, 7, 2, 6, 5, 4, 3.

    Cylinders 1, 3, 5 and 7 are the left bank.

    Cylinder 2, 4, 6 and 8 are the right bank.

    CAUTION:

    Refer to Fastener Caution .

  7. With the engine in the number one firing position, tighten the following valve rocker arm bolts:
    • Tighten the cylinders 1, 2, 7 and 8 exhaust valve rocker arm bolts to 30 N.m (22 lb ft).
    • Tighten the cylinders 1, 3, 4 and 5 intake valve rocker arm bolts to 30 N.m (22 lb ft).
  8. Rotate the crankshaft 360 degrees.
  9. Tighten the following valve rocker arm bolts:
    • Tighten the cylinders 3, 4, 5 and 6 exhaust valve rocker arm bolts to 30 N.m (22 lb ft).
    • Tighten the cylinders 2, 6, 7 and 8 intake valve rocker arm bolts to 30 N.m (22 lb ft).
  10. Install the valve rocker arm cover. Refer to Valve Rocker Arm Cover Replacement - Left Side , or Valve Rocker Arm Cover Replacement - Right Side .
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