When driving at 60 mph the car seems to jerk like it is missing. When accelerating it is fine or when idoling it is fine. What should I check for.

https://www.askmehelpdesk.com/cars-trucks/when-asking-about-your-vehicle-303903.html

The car is a 1999 chevy malibu with a 2.4lL engine.

Try replacing the spark plugs (ACDelco only) with the exact plugs that came in the car. Replace platinum plugs every 40,000 miles. If the problem persists, replace the coil packs.