Engine Size: 5.8
Issue / Question:
It shifts really hard at 10-15, 20-30, and 45mph. Just recently replaced the trans filter hoping it would help but it didn’t.
Sounds like a stuck EPC electric pressure control solenoid. If this sensor quits working, it wont exhaust the fluid to control pressure. And if it doesn’t it will shift really really hard! Let us know if you want us to look at it.
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