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.

Lubricate the top of the valves, the valve bridge stem, the valve lifter bridge, and the valve spring caps with clean engine oil.
Install the valve spring caps.
Install the valve lifter bridges.
Lubricate the valve lifter end of the pushrod with clean engine oil.
Install the pushrods.
To ensure the pushrod is properly installed, gently pull up on the pushrod. You should feel resistance from the pushrod trying to lift the valve lifter.

Fig 1: View Of Pushrods, Valve Spring Caps & Valve Lifter Bridges

Courtesy of GENERAL MOTORS CORP.

Lubricate the following with clean engine oil during installation:
- Rocker arm shaft bolt threads
- Tops of the push rods
- Rocker arms
- Rocker arm shaft
Install the rocker arm shaft with bolts.

Fig 2: View Of Rocker Arm Shaft

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Tighten the bolts in the sequence shown.
Tighten: Tighten the bolts to 41 N.m (30 lb ft).

Fig 3: Valve Rocker Arm Bolt Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

Adjust the valve clearance. Refer to Valve Clearance Adjustment .
Install the lower valve rocker arm covers. Refer to Valve Rocker Arm Cover Replacement - Lower Left or Valve Rocker Arm Cover Replacement - Lower Right .