Tools Required

J 45059  Angle Meter

1. Clean the camshaft journals, camshaft and the camshaft caps with a clean, lint-free cloth.
Fig 1: View of Camshaft Journals
Courtesy of GENERAL MOTORS CORP.
2. Apply a liberal amount of lubricant GM P/N 12345001 (Canadian P/N 992704) or equivalent to the camshaft journals (1).
Fig 2: Identifying Camshaft Lobes & Journals
Courtesy of GENERAL MOTORS CORP.
3. Apply a liberal amount of lubricant GM P/N 12345001 (Canadian P/N 992704) or equivalent to the camshaft lobes (1) and the camshaft journals (2).
Fig 3: Correct Camshaft Sprocket Drive Pin Location
Courtesy of GENERAL MOTORS CORP.
IMPORTANT: Ensure each valve rocker arm is properly aligned to the valve tip, the valve lifter and the camshaft lobe. Inspect the alignment prior to and after the camshaft caps are tightened to specifications.
4. Place the camshaft in the camshaft journals with the camshaft sprocket drive pins near the 45-60 degree location (1), clockwise from the top of their rotation and the camshaft lobes in a neutral position. The camshaft can be identified by a stamping near the rear journal. For example: R-EXH is defined as right bank exhaust.
Fig 4: View Of Exhaust Camshaft Bearing Cap Markings
Courtesy of GENERAL MOTORS CORP.
5. Observe the markings on the camshaft bearing caps. Each camshaft bearing cap is marked in order to identify its location. The markings have the following meanings:
   • The arrow should point toward the front of the engine.
   • The number indicates the position from the front of the engine.
   • The "E" indicates the exhaust camshaft.
6. Apply a liberal amount of lubricant GM P/N 12345001 (Canadian P/N 992704) or equivalent to the right exhaust camshaft bearing cap journals.
Fig 5: View of Right Exhaust Camshaft Bearing Caps
Courtesy of GENERAL MOTORS CORP.
7. Install the right exhaust camshaft bearing caps according to the identifications marks.
8. Hand start all the right exhaust camshaft bearing cap bolts.
Fig 6: View of Right Cylinder Head Exhaust Camshaft Bearing Cap Bolts
Courtesy of GENERAL MOTORS CORP.
NOTE: Refer to Fastener Notice in Cautions and Notices.
IMPORTANT: Ensure each valve rocker arm is properly aligned to the valve tip, the valve lifter and the camshaft lobe. Inspect the alignment prior to and after the camshaft caps are tightened to specifications.
9. Install the right cylinder head exhaust camshaft bearing cap bolts.
   1. First Pass

      Tighten:  Tighten the camshaft bearing cap bolts to 5 N.m (44 lb in).

   2. Final Pass

      Tighten:  Tighten the camshaft bearing cap bolts an additional 30 degrees using the J 45059  .