GM Buick/Oldsmobile/Pontiac/Full-Size 1975-1990 Repair Guide

Freeze Plugs

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REMOVAL & INSTALLATION



See Figures 1 and 2

  1. Drill a small hole in the middle of the freeze plug.
  2.  
  3. Thread a large sheet metal screw into the hole and remove the plug with a slide hammer.
  4.  

To install:
  1. Coat the freeze plugs with sealer and tap into position using a piece of pipe, slightly smaller than the plug, as a driver. To ensure retention, stake the edges of the plugs.
  2.  



Click image to see an enlarged view

Fig. Fig. 1: The freeze plug can also be loosened using a punch and a hammer



Click image to see an enlarged view

Fig. Fig. 2: Once the freeze plug has been loosened, it can be removed from the block

 
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