Installation Procedure

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.

Lubricate and fill the valve lash adjusters with engine oil.
Install the valve lash adjusters in their original locations.

Fig 1: Installing Valve Lash Adjusters
Courtesy of GENERAL MOTORS CORP.
Lubricate the valve rocker arm roller.
Install the valve rocker arms in their original locations.
Coat the camshaft journals with engine oil.

Fig 2: Installing Valve Rocker Arms
Courtesy of GENERAL MOTORS CORP.
Install the camshafts to their original position

Fig 3: Installing Camshafts
Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the camshaft caps onto their original journal.
Tighten

Tighten the camshaft cap bolts to 12 N.m (106 lb in).

Fig 4: Installing Camshaft Caps
Courtesy of GENERAL MOTORS CORP.
Carefully move the camshaft sprockets back onto the camshafts and remove the J 44222 .
Install the intake camshaft sprocket washer, and the bolt, and the exhaust camshaft actuator bolt.
Tighten
- Tighten the intake camshaft sprocket bolt the first pass 20 N.m (15 lb ft).
- Use the J 36660-A to tighten the intake camshaft sprocket bolt the final pass and additional 100 degrees.
- Tighten the exhaust camshaft actuator bolt the first pass to 25 N.m (18 lb ft).
- Use the J 36660-A to tighten the exhaust camshaft actuator bolt a final pass an additional 135 degrees.
Install the camshaft cover. Refer to CAMSHAFT COVER REPLACEMENT .

Fig 5: Installing Intake Camshaft Sprocket Washer And Bolt
Courtesy of GENERAL MOTORS CORP.