GM Full Size Vans 1987-1997 Repair Guide

Throttle Body

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REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable.
  2.  
  3. Remove the air inlet fastener and duct.
  4.  
  5. Disengage the Idle Air Control (IAC) valve and the Throttle Position Sensor (TPS) electrical connectors.
  6.  
  7. Disconnect the throttle and cruise control cables.
  8.  
  9. Disconnect the accelerator cable bracket bolts and nuts.
  10.  
  11. Disengage the wiring harness fastener nut.
  12.  
  13. Unfasten the throttle body retaining nuts and remove the throttle body.
  14.  
  15. Remove and discard the flange gasket.
  16.  
  17. Clean both gasket mating surfaces.
  18.  

When cleaning the old gasket from the machined aluminum surfaces be careful as sharp tools may damage the sealing surfaces

To install:
  1. Install the new flange gasket and the throttle body assembly.
  2.  
  3. Tighten the throttle body attaching nuts to 18 ft. lbs. (25 Nm).
  4.  
  5. Install the accelerator cable bracket bolts and nuts and tighten to 18 ft. lbs. (25 Nm).
  6.  
  7. Connect the throttle and cruise control cables.
  8.  
  9. Engage the IAC valve and the TPS electrical connectors.
  10.  
  11. Install the air inlet fastener and duct. Connect the negative battery cable.
  12.  

 
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