A 1979 Chevy Caprice Classic sedan likely used
Type A power steering fluid. However, it's
crucial to verify this by checking your owner's manual. If you don't have the manual, you could try searching online for a digital copy specific to your year and model.
While Type A was common in older vehicles, using the wrong fluid can damage your power steering system. Therefore, confirming the correct specification from your owner's manual is the safest approach.