Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Method 1
Start and run vehicle then disable fuel pump with Scan tool. This method is the cleanest since no fuel, under pressure, will be present at any fitting or connection that needs to be serviced.
This method is preferred when removing any components of the fuel system that require disconnecting fuel lines. If performance tests are to be run on the system underhood, procedure 2 will be preferable since the Gauge Bar Set SA9127E will also be required for the testing.
This method is also preferable to disconnecting the fuel pump relay since no DTC's will be set and there is no concern about voltage spikes to the ECM if the relay should be re-installed with the key On.
- Connect Scan tool and start vehicle.
- Turn Scan tool On and locate SPECIAL FUNCTIONS.
- Select POWERTRAIN, then select fuel SYSTEM.
- Select FUEL PUMP, then command fuel pump Off.
- Engine will die in 3-5 seconds. Turn key Off, and proceed with component removal/installation.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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