* Inertia Switch: This is probably the closest thing to a dedicated safety switch. It's designed to cut off fuel supply in a collision. Its location varies slightly by model, but it's often found under the dash, near the driver's side kick panel. It might be a small, black box or a resettable breaker.
* Fuel Pump Relay: The fuel pump relay controls power to the fuel pump. A problem with this relay can prevent fuel delivery, acting as an indirect safety mechanism. This relay is typically located in the underhood fuse box or a separate relay center. Consult your owner's manual for the exact location.
* Ignition System: The ignition system itself plays a crucial role. The fuel pump only operates when the ignition is on and the engine is cranking or running.
To find the inertia switch, the best approach is to visually inspect under the dash on the driver's side. Your owner's manual might show a diagram, but its clarity on this specific component can be lacking in older manuals. If you can't locate it, consulting a repair manual specific to your 1995 Blazer's engine and trim level will be very helpful.
