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Home >> GMC >> 1990 >> Magnavan 5.7 K, 400/M40 >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System (Gasoline) >> Throttle Body >> Installation
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Throttle Body: Installation

To install, reverse removal procedure. Ensure throttle body and intake manifold sealing surfaces are clean. Always use new throttle body gasket and fuel line "O" rings. Check fuel system for leaks by turning ignition on, but without starting engine.