General Motors — Service Procedure
A General Motors service procedure — check it applies to your exact model before use.
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Procedure
- Disconnect battery. Raise and support vehicle. Drain crankcase. Remove exhaust
- Remove starter. Remove or disconnect engine oil cooler lines and/or transmission fluid
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.