Envoy 4WD V6-4.3L VIN W (1998)
1. Install the crankshaft balancer key into the keyway in the crankshaft (if removed).
The crankshaft balancer key should be parallel to the crankshaft or with the front of the key slightly lower.
2. Align the keyway of the crankshaft sprocket with the crankshaft balancer key.
3. Use the J 5590 and a hammer in order to install the crankshaft sprocket.
IMPORTANT: Be sure to align the camshaft and the crankshaft sprocket alignment marks.
4. Align the camshaft and crankshaft sprockets timing marks.
5. Look to ensure that the crankshaft sprocket is aligned at the 12 o'clock position and the camshaft sprocket is aligned at the 6 o'clock position.
6. Install the camshaft sprocket and the camshaft timing chain.
NOTICE: Refer to Fastener Notice in Service Precautions.
