* Faulty ignition switch: The ignition switch is responsible for sending power from the battery to the starter. If the ignition switch is faulty, it may not be able to send power to the starter, preventing the engine from turning over.
* Bad ignition coil: The ignition coil is responsible for providing the spark that ignites the fuel in the engine. If the ignition coil is faulty, it may not be able to produce a spark, preventing the engine from starting.
* Fuel pump issues: If the fuel pump is not working properly, it may not be able to deliver fuel to the engine, preventing it from starting.
* Clogged fuel filter: A clogged fuel filter can restrict the flow of fuel to the engine, causing the engine to stall or not start.
* Bad spark plugs: Worn or damaged spark plugs can prevent the engine from getting the spark it needs to start.
* Wiring issues: Damaged or loose wiring can interrupt the electrical signals between the battery, ignition switch, starter, and other components, preventing the engine from starting.
To pinpoint the exact cause of the problem, it may be necessary to perform further tests and diagnostics on your 1993 Suburban. If you are not mechanically inclined, it is recommended that you take your vehicle to a reputable mechanic for proper diagnosis and repair.