To find it:
1. Locate the underhood fuse block/relay center: This is usually a large rectangular box, often near the battery. It may be mounted on the inner fender or on the firewall.
2. Consult your owner's manual: This is the best resource. It will have a diagram showing the fuse box layout and identify the starter relay (often labeled "STA" or "STR").
3. Check online resources: Search for "1995 Chevy G20 fuse box diagram" or "1995 Chevy G20 starter relay location" along with your engine size (e.g., 4.3L, 5.7L) to find diagrams specific to your van. Many automotive forums and websites have these diagrams.
Important Considerations:
* Multiple Relays: The starting system might use more than one relay. One might control the starter solenoid directly, while another might power the ignition system.
* Heavy Duty Relays: Starter relays are usually larger and heavier-duty than other relays in the fuse box. This can help you visually identify it.
Without a diagram specific to your van's engine, precisely locating the relay is difficult. Using your owner's manual and online resources is the most reliable way to find it.