1994 GMC Safari Owner's Manual - Page 237

8. Grasp the bottom of the instrument panel extension and install the top into the groove first. Then, push the bottom of the extension into place. 9. Install the two nuts and two screws on the extension. Air Cleaner To Remove the Air Cleaner Filter: If you have the 4.3L engine (VIN Code Z) with the round air cleaner, you must first remove the engine cover before changing the filter. (See "Engine Cover" earlier in this section.) After removing theengine cover, unscrew the wing nuts to take the cover off the air cleaner. After changing the filter, put the cover back on and besure the wing nuts are properly tightened. Be sure air cleaner lid is correctly positionedto seal out dust and contaminants that are harmful to your engine.