Removal (Model 700)

Relieve fuel pressure. See FUEL PRESSURE RELIEF under FUEL SYSTEM (TBI)  in this article. Remove fuel injector retainer screw and retainer. Using screwdriver and fulcrum on side of injector opposite connector terminals, carefully pry injector out. See Fig 1 . Remove upper and lower "O" rings and discard.

Fig 1: Typical Throttle Body Injector Removal

Courtesy of GENERAL MOTORS CORP.