There are two fuse boxes in a 1998 Cadillac DeVille: an under-hood fuse block in the engine compartment and an interior fuse block behind the glove box.
In typical 1998 DeVille models, the engine-compartment power distribution center protects engine and powertrain circuits, while the interior panel handles most cabin electronics. Access usually means popping the hood to reach the under-hood block and opening the glove box to reach the interior block. Always refer to the covers or the owner's manual for the exact fuse diagram and amperage ratings.
Fuse box locations
The DeVille commonly has two primary fuse locations. The following sections describe where they are and how to get to them.
Under-hood fuse block (engine compartment)
Location: In the engine bay, typically on the passenger side near the fender or firewall. It is protected by a black plastic cover labeled something like “Fuse Block” or “Power Distribution Center.” Access is gained by removing the cover to view the fuses and relays inside.
Interior fuse block behind the glove box
Location: On the passenger side of the instrument panel. Access is gained by opening the glove box and either dropping the box or removing its panel to reveal the fuse block and its fuses.
Both blocks include fuses and relays essential to the vehicle’s operation. The covers carry a diagram that identifies the purpose and amperage of each fuse.
Replacing fuses
If you need to replace a blown fuse, follow these steps. The same approach works for both fuse boxes.
- Turn off the ignition and all electrical accessories.
- Open the hood for the engine-block fuse block, or open the glove box for the interior fuse block.
- Remove the fuse block cover and consult the diagram inside for the correct fuse slot and amperage.
- Carefully pull the suspected fuse straight out using fuse pullers or needle-nose pliers and inspect it.
- Insert a fuse of identical amperage rating into the slot; never exceed the labeled rating.
- Reinstall the cover, close the glove box if applicable, and test the affected system.
If a fuse continues to blow after replacement, there may be an electrical fault or short in the circuit. In that case, have a qualified technician diagnose the issue.
Summary
For a 1998 Cadillac DeVille, expect two fuse boxes: an under-hood block in the engine compartment and an interior block behind the glove box. Each has its own cover with a diagram. Replacement should follow the indicated amperage, and persistent fuse-blowing warrants professional inspection. Always consult the owner’s manual for the exact layout and fuse designations.