Where is the fusible link for ignition on a 1986 GMC suburban 6.2 diesel?

The 1986 GMC Suburban 6.2L diesel doesn't use a single fusible link specifically for the ignition in the same way some vehicles do. Instead, the ignition system's power is protected by several fuses and possibly a circuit breaker, distributed throughout the underhood fuse block and possibly inside the cab. There's no single point of failure like a dedicated "ignition fusible link."

To find the relevant fuses and/or circuit breaker, you'll need to consult your owner's manual's fuse box diagram. Look for fuses related to the ignition switch, the ignition system (coil, etc.), and the starter. These will be the components that protect the ignition circuit. The fuse block itself is likely located under the hood, often near the battery. There might also be a smaller fuse block inside the vehicle.

Without the owner's manual diagram, pinpointing the exact location is impossible. The best approach is to:

1. Locate the underhood fuse block: It's usually a plastic box near the battery.

2. Find your owner's manual: The fuse diagram will clearly show which fuse protects which circuit. If you don't have the manual, you can often find a PDF version online through a GMC parts website or a site like Haynes Manuals.

3. Examine the fuses: Look for blown fuses (a broken filament inside the fuse).

4. Check for a circuit breaker: Some systems use a circuit breaker instead of, or in addition to, fuses. These are usually resettable.

Remember to always disconnect the negative battery cable before working with the electrical system to prevent accidental shorts.