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.
2004 GMC Jimmy 2D Utility, Part Time, AutomaticFACTORY OEM SERVICE PROCEDURE
Fuel Injector Cleaning Procedure: Notes
Tools Required
- J 44466-12 CSFI Fuel Metering Body Jumper Block
- J 44466-13 Screws
- J 44466-11 IAFM fuel Transfer Tube Recycling Tube
- J 41413 EVAP Pressure/Purge Diagnostic Station
- J 44466-10 Regulator and Hose Assembly
- J 39021 Fuel Injector Coil/Balance Tester. See Special Tools and Equipment .
- J 39021-210 Injector Switch Box. See Special Tools and Equipment .
- J 39021-301 Injector Harness Connector (4.3L)
- J 38500-A Fuel Injector Cleaner
Factory Service Tools
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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