Suburban 2WD V8-5.3L (2008)
Fuel Injector: Technician Safety Information
Lower O-Ring Removal Caution
Caution: Verify that the lower (small) O-ring of each injector does not remain in the lower manifold in order to reduce the risk of fire and personal
injury.
If the O-ring is not removed with the injector, the replacement injector with new O-rings will not seat properly in the injector socket. Improper seating
could cause a fuel leak.