Silverado 1500 2WD V6-4.3L VIN X (2004)
Timing Chain: Service and Repair
Timing Chain, Sprockets, and/or Tensioner Replacement
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Tools Required
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J 5590 Rear Pinion Bearing Race Installer
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J 5825-A Crankshaft Gear Remover
Removal Procedure
Notice: In order to rotate the engine install a bolt with the same threads as the crankshaft, but do not use the crankshaft balancer bolt or a bolt longer
than 1 inch, in the crankshaft. Failing to do so will cause damage to the bolt threads and the crankshaft threaded hole when removing the bolt.
1. Remove the crankshaft position (CKP) sensor reluctor ring.
2. Install a 7/16-20 x 1 inch bolt into the end of the crankshaft.
3. Rotate the crankshaft until:
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The timing marks on both sprockets line up.
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The number 4 cylinder is at top dead center (TDC) of the compression stroke.
Notice:
Align the timing marks before removing the timing chain. If it is necessary to turn either the camshaft or the crankshaft with the timing chain
removed, loosen or remove the valve rocker arms. Turning either the crankshaft or camshaft with the timing chain removed may cause the pistons
to contact the valves, resulting in damage.
