2005 LLY - Allison 5 Spd - 4WD - Stock 253K
I have an 05 LLY with 252k and a Allison. My trans has “Allison Retrans” on the side of it. I assume it is a remanufactured trans. When it shifts I can feel it. Is that normal? If I give it full throttle it has some turbo lag (normal?) and will occasionally kick pretty hard. Is there anything that can be done to improve shift quality? I just redid my head gaskets with some various other parts so I don’t know if that would improve performance at all and change input to the transmission.