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General Motors — Service Procedure

A General Motors service procedure — check it applies to your exact model before use.

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Procedure

  1. Disconnect negative battery cable. Remove fan shroud. Remove fan and accessory
  2. Remove crankshaft balancer bolt. Remove crankshaft pulley bolts and crankshaft
  3. Remove all mounting brackets and coolant hoses attached to water pump. Remove
  4. On models equipped with a Crankshaft Position (CKP) sensor, disconnect CKP sensor
  5. On all models, loosen or remove oil pan as necessary for removal of front cover.
  6. On models equipped with CKP sensor, remove CKP sensor reluctor ring. See Fig. 6 .
  7. On all models, rotate crankshaft until timing marks on camshaft and crankshaft

Source: manual:1995 ENGINE 4.3L VIN W_text.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.