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Where is 1990 suburban fuel pump relay fuse?

There's no single answer to where the fuel pump relay fuse is located in a 1990 Chevrolet Suburban. The location depends on the specific engine and trim level of your Suburban. It might be in the underhood fuse box, the under-dash fuse panel, or even in a separate panel within the engine compartment.

To find it, you need to:

1. Consult your owner's manual: This is the best source of information. It will have diagrams of the fuse and relay panels, clearly indicating the location of the fuel pump relay and any related fuses.

2. Check the underhood fuse box: This is the most common location. The cover usually has a diagram showing what each fuse and relay controls.

3. Check the under-dash fuse panel: Some Suburbans have additional fuses and relays located under the dashboard. Again, there should be a diagram on the cover.

4. Look for a separate relay center: Some models might have a dedicated relay center in the engine bay, separate from the main fuse box.

Important Note: While there might be a fuse *related* to the fuel pump circuit, the fuel pump itself is typically controlled by a relay, not directly by a fuse. The relay switches the higher current needed by the pump. You'll need to identify both the relay and any associated fuses to troubleshoot a fuel pump issue. If you're not comfortable working with car electrical systems, it's best to take your Suburban to a qualified mechanic.