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Home >> GMC >> 1990 >> Forward Control 4.3 Z, Automatic, 475/M40 >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System (Gasoline) >> Throttle Body Injector >> Removal (Model 700)
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Removal (Model 700)

Relieve fuel pressure. See FUEL PRESSURE RELIEF (GASOLINE) 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
G90I15725Courtesy of GENERAL MOTORS CORP.