Why is D4 still blinking and shifting hard

Good morning,

What is the code that was sent?

The light indicates a fault in the system. You need to have the code checked. A parts store will read it for free.

Once I know the code, I can help narrow the area of failure.

Roy

P1768, p0132, p1298, p0135, p0141 codes came up. I've replaced the shift solenoid distributor cap an button exhaust manifold distributor o-ring battery.