However, if you're determined to attempt this yourself, here's a *general* overview. Specific steps will vary significantly depending on the year and model of your Suburban. Always consult your vehicle's repair manual for the precise procedure for your specific year and engine.
General Steps (May Vary Significantly):
1. Safety First: Disconnect the negative battery cable. Work in a well-ventilated area, away from any ignition sources. Have a fire extinguisher readily available. Use appropriate safety glasses and gloves.
2. Fuel System Depressurization: You MUST relieve pressure in the fuel system. This usually involves starting the vehicle and letting it run until it stalls (after disconnecting the fuel pump relay). Consult your repair manual for the specific procedure. Failure to depressurize could result in fuel spraying under pressure.
3. Access the Fuel Pump: This usually involves dropping the fuel tank. This requires:
* Removing the access panel under the vehicle (if applicable).
* Disconnecting the fuel lines (using appropriate tools and carefully plugging them to prevent fuel spillage).
* Disconnecting the electrical connector to the fuel pump.
* Removing the fuel tank straps and carefully lowering the tank. This often involves using jack stands for support.
4. Remove the Fuel Pump: The fuel pump is typically accessed through a hole in the top of the fuel tank. This may involve removing a retaining ring or other fasteners.
5. Replace the Fuel Pump: Install the new fuel pump, ensuring it's correctly seated and secured.
6. Reassembly: Carefully reassemble everything in the reverse order of disassembly, making sure all fuel lines and electrical connections are secure and leak-free.
7. Fuel System Priming: After reconnecting the fuel tank, you may need to prime the fuel system to get fuel flowing to the engine. This may involve using a fuel pump primer tool or several attempts at starting the vehicle. Consult your repair manual.
8. Reconnecting the Battery: Once everything is reassembled and the fuel system is primed, reconnect the negative battery cable.
9. Testing: Start the vehicle and check for leaks around the fuel lines and tank. Listen for any unusual noises from the fuel pump.
Tools You Will Likely Need:
* Jack and jack stands
* Wrenches (various sizes)
* Socket set
* Fuel line disconnect tools
* Fuel pump pliers
* Safety glasses
* Gloves
* Fire extinguisher
* Shop rags
* New fuel pump (correct part number for your vehicle)
* Repair manual specific to your GMC Suburban year and model
Again, this is a simplified overview. Incorrectly performing this procedure can be extremely dangerous. Consult your vehicle's repair manual and/or consider seeking professional help from a qualified mechanic. The cost of professional labor is far less than the cost of a potential injury or fire.
