S&T Series Blazer, Bravada, Envoy, Jimmy, Rainier, Trailblazer, Xtreme

Distributorless Ignition System

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Ignition Coils



Removal & Installation
4.2L Engine
  1. Remove the air cleaner outlet resonator.
  2.  
  3. Disconnect the ignition coil connectors (1) from the ignition coils.

    Click image to see an enlarged view

    Fig. Detach the connectors (1) and remove the bolts (2) from the ignition coils

  4.  
  5. Remove the retaining bolts (2) from the ignition coils.
  6.  
  7. Remove the ignition coils (1) from the engine.
  8.  

To install:


NOTE
Make sure that the ignition coil seals are properly seated to the valve cover.

  1. Install the ignition coil.
  2.  
  3. Install the ignition coil retaining bolts and tighten to 89 inch lbs. (10 Nm).
  4.  
  5. Replace the ignition coil connectors.
  6.  
  7. Install the air cleaner outlet resonator.
  8.  

5.3L Engine
  1. Disconnect the negative battery cable.
  2.  
  3. Remove the spark plug wire from the ignition coil.
  4.  
  5. Disconnect the ignition coil electrical connector.
  6.  
  7. Remove the ignition coil bolts.
  8.  
  9. Remove the ignition coil.
  10.  

To install:

  1. Install the ignition coil.
  2.  
  3. Install the ignition coil bolts and tighten to 71 inch lbs. (8 Nm).
  4.  
  5. Connect the ignition coil electrical connector.
  6.  
  7. Connect the spark plug wire to the ignition coil.
  8.  
  9. Connect the negative battery cable.
  10.  

 
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