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Home >> GMC >> 1991 >> Forward Control 4.3 Z, Automatic >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Fuel System (PFI) >> Throttle Body Removal & Installation >> Installation

Throttle Body Removal & Installation: Installation

  1. To install, reverse removal procedure using new gasket. Ensure throttle and cruise control cables do not hold throttle valve open. Tighten retaining bolts to specification. See appropriate TORQUE SPECIFICATIONS TABLE at end of article. Reset IAC valve pintle position.
  2. To reset IAC valve pintle position, depress accelerator pedal slightly. Start and run engine for 5 seconds. Turn ignition off for 10 seconds. Restart engine and check for proper idle operation.