General Motors — Service Procedure
A General Motors service procedure — check it applies to your exact model before use.
Browse General Motors generators & specs →
Procedure
- Mark piston in relation to cylinder bore before removal. Piston pin is press-fit in
- Replace piston and piston pin as matched set. Install piston in bore with notch on top of
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.