Rocker Arms & PUSHRODS: Removal
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1997 GMC Savana, 1997 GMC Pickup, 1997 Chevrolet Pickup, 1997 Chevrolet Chevy Van, and 1997 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.
Remove negative battery cable. On Commercial Van, remove engine cover of floor panel. Remove PCV valve and tube. Remove EGR inlet tube. Remove purge solenoid and spark plug wires. Remove valve cover. Remove rocker arm bolts. If pushrods are to be replaced only, back off valve rocker arm bolts until valve rocker arm can be swung away from pushrod and remove pushrod.