Installation Procedure
WARNING: This page is about a different car, the 2003 GMC Sierra and 2003 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
Whenever a new camshaft is installed, perform the following:
- Change the engine oil and filter.
- Add engine oil supplement GM P/N 1052367, (Canadian P/N 992869), or equivalent to the engine oil.
- Apply lubricant GM P/N 12345501, (Canadian P/N 992704), or equivalent, or engine oil supplement GM P/N 1052367, (Canadian P/N 992869), or equivalent to the following components:
- The engine camshaft lobes
- The camshaft bearing journals
- The camshaft bearings
- Install three 5/16-18 x 4.0 inch bolts into the engine camshaft front bolt holes.NOTE: All camshaft journals are the same diameter, so care must be used in removing or installing the camshaft to avoid damage to the camshaft bearings.
- Using the bolts as a handle, install the engine camshaft.
- Remove the 3 bolts from the front of the engine camshaft.
NOTE: Refer to FASTENER NOTICE .
- If reusing the fasteners, apply threadlock GM P/N 12345382 or equivalent to the threads of the camshaft retainer bolts.
- Install the camshaft retainer and bolts.
Tighten
Tighten the bolts to 12 N.m (106 lb in).
- Install the balance shaft drive gear. Refer to Balance Shaft Installation , for alignment of the balance shaft drive gear and the driven gear.
- Install the timing chain and camshaft sprocket. Refer to Timing Chain and Sprockets Replacement .
- Install the lifters. Refer to Valve Lifter Replacement .
- Install the A/C condenser. Refer to CONDENSER REPLACEMENT .
- Install the radiator. Refer to RADIATOR REPLACEMENT .