GM Full-Size Trucks 1980-1987 Repair Guide

Valve Cover(s)



See Figures 1 and 2

  1. Disconnect the negative battery cable.
  3. Remove air cleaner.
  5. Disconnect and reposition as necessary any vacuum or PCV hoses that obstruct the valve covers.
  7. On the left side, on some models, it may be necessary to remove the air conditioning compressor and lay to one side. (Do not disconnect the hoses).
  9. Disconnect electrical wire(s), spark plug, etc. from the valve cover clips.
  11. Unbolt and remove the valve cover(s).

Do not pry the covers off if they seem stuck. Instead, gently tap around each cover with a rubber mallet until the old gasket or sealer breaks loose.

To install:
  1. Use a new valve cover gasket or RTV (or any equivalent) sealer. If using sealer, follow directions on the tube. Install valve cover and tighten cover bolts to 3 ft. lbs.
  3. Connect and reposition all vacuum and PCV hoses, and reconnect electrical and/or spark plug wires at the cover clips. Install the air cleaner.

Click image to see an enlarged view

Fig. Fig. 1: Valve cover and rocker removal arm removal, common V8 engine shown-note that not all engines utilize bolt retained pivots

Click image to see an enlarged view

Fig. Fig. 2: Apply sealer to all valve covers as shown. Always run the sealer bead on the inside edge of the bolt holes on the cover flange