K 1500 Yukon 4WD V8-4.8L VIN V (2003)
Fuel Injector: Service and Repair
Fuel Injector Replacement
REMOVAL PROCEDURE
NOTE: Use care in removing the fuel injectors in order to prevent damage to the fuel injector electrical connector pins or the fuel injector nozzles. Do
not immerse the fuel injector in any type of cleaner. The fuel injector is an electrical component and may be damaged by this cleaning method.
IMPORTANT:The Denso fuel injectors that are installed on the 5.3L (L59) E85 application will not have O-rings and retaining clips service separately.
Therefore, the fuel injectors will be replaced whenever an O-ring or clip needs to be replaced.
The engine oil may be contaminated with fuel if the fuel injectors are leaking.
1. Remove the fuel rail.
2. Remove and discard the fuel injector retainer clip (19).
3. Remove the fuel injector (17).
4. Remove and discard the fuel injector retainer clip (1).
5. Remove and discard the fuel injector O-ring seals (2, 4).
INSTALLATION PROCEDURE
IMPORTANT:When ordering new fuel injectors, you must order the correct injector for the application being serviced.
