Here's a general outline. Specific steps and tools might vary slightly depending on your exact model and modifications. Consult a repair manual specific to your 1993 Chevy Suburban K1500 for detailed instructions and diagrams. This is crucial for avoiding mistakes.
1. Preparation:
* Safety First: Disconnect the negative battery cable.
* Gather Tools: You'll need jack stands, jack, socket set (metric and possibly SAE), wrenches, fuel line disconnect tools, pry bar, safety glasses, gloves, rags, possibly a fuel pump pressure gauge, new fuel pump, new fuel filter (highly recommended), and possibly a fuel line disconnect tool. A fuel pump installation kit may simplify some steps.
* Locate Fuel Pump: The fuel pump is usually located in the fuel tank, requiring tank removal or access through a drop-down access panel (some models have this; check your vehicle).
2. Fuel Tank Access:
* Drop-Down Access Panel: If your Suburban has this, this will be the easiest route. Consult your repair manual for its location and removal procedure.
* Tank Removal (More Common): This usually involves:
* Lowering the Fuel Tank: You'll need to support the tank securely. Disconnect the fuel lines, the fuel tank sending unit electrical connector(s), and possibly the vent line. Loosen the tank straps and carefully lower the tank. Support it well with jack stands. Be extremely careful with the tank. It's heavy and full of fuel.
3. Fuel Pump Replacement:
* Disconnect Fuel Lines: Use fuel line disconnect tools to safely disconnect the fuel lines. Have rags ready to absorb any spilled fuel.
* Disconnect Electrical Connectors: Disconnect the electrical connectors to the fuel pump.
* Remove the Fuel Pump: This usually involves removing a retaining ring or cover, possibly using a specialized tool. Then lift the pump out. The pump may be part of a larger assembly, including the fuel sending unit. This whole assembly may need to be removed.
* Install the New Fuel Pump: Install the new fuel pump, ensuring it's properly seated. Reverse the removal steps to reinstall the pump.
* Reconnect Everything: Reconnect the electrical connectors and fuel lines securely. Pay close attention to routing and clamps.
* Reinstall the Fuel Tank (if removed): Securely fasten the straps to lift the tank back into place. Reconnect the fuel lines, electrical connectors, and vent line.
4. Post-Installation:
* Reconnect the Battery: Reconnect the negative battery terminal.
* Prime the Fuel System: Some vehicles require priming the fuel system after a fuel pump replacement. Your repair manual will detail this step. You may need to crank the engine several times (with the key, not while cranking) before it starts.
* Check for Leaks: Carefully inspect all connections for leaks.
* Test Drive: Test drive the vehicle and monitor for any issues.
Important Considerations:
* Fuel Pressure: A fuel pressure gauge can help ensure proper fuel pressure after installation.
* Repair Manual: A factory service manual or a Chilton/Haynes manual specific to your vehicle is essential. This will provide detailed, illustrated steps and torque specifications. Following these instructions carefully is crucial.
* Professional Help: If you're not comfortable with this level of repair, consider taking your vehicle to a qualified mechanic. Incorrectly working with fuel systems can be dangerous.
This is a complex procedure. Failure to follow proper safety precautions and detailed instructions can result in injury, fire, or vehicle damage. Consult a repair manual before beginning this repair.
