However, generally speaking, for a 1996 Chevy Cheyenne, you'd likely be looking at a conventional oil with a viscosity rating of 10W-30 or 5W-30. The specific oil's API certification (like SL or SJ) might also be specified in your owner's manual. Modern oils (like SM, SN, or SP) are generally backward compatible, but checking your owner's manual is crucial to avoid potential problems.
Do not rely on generic advice. Always refer to your owner's manual for the correct oil type and viscosity for your specific engine.