Tools Required

J 42038  Camshaft Holding Fixture

Important:  DO NOT rotate the camshafts more than 10 degrees.

1. Remove the J 42038  from the left cylinder head camshafts. Allow the camshaft lobes to find a neutral position by rotating each camshaft, if necessary.
   Fig 1: Removing J 42038

   Courtesy of GENERAL MOTORS CORP.
2. Observe the markings on the bearing caps. Each bearing cap is marked in order to identify its location. The markings have the following meanings:
   • The raised feature must always be oriented toward the outboard side of the engine.
   • The I indicates the intake camshaft.
   • The E indicates the exhaust camshaft.
   • The number indicates the journal position from the front of the engine.
   Fig 2: Identifying Bearing Cap Markings

   Courtesy of GENERAL MOTORS CORP.
3. Remove the camshaft bearing cap bolts.
4. Remove the camshaft bearing caps. The cap closest to the front of the engine is the thrust cap and must not be installed in another location.
   Fig 3: Removing Camshaft Bearing Caps

   Courtesy of GENERAL MOTORS CORP.
5. Lift the camshaft (1, 2) out of the cylinder head.
6. Cover the camshaft with an oil soaked towel in order to prevent corrosion.
   Fig 4: Removing Camshaft

   Courtesy of GENERAL MOTORS CORP.