cowboywildbill
06-26-2003, 19:59
I am running the 90 hp. amp level 4 unloaded, and latley, sometimes when I am nailing it, the truck will shift real hard. I think it is when it is going into 4th or 5th gear at about 55-60 mph. I am running in trans normal mode, and when it shifts it will hit so hard it bangs, almost like a wheel hop that catches. I have checked fluid and pan and filter, no signs of anything going on. But I am wondering if it could be a glitch in the TCM and AMP, maybe the lockup is happening just before the shift? Or maybe no defueling? I have been running the amp for almost a year, no limps or codes.The trans will run and shift normal otherwise, even while towing in level 2 in tow haul mode. I dropped the power back to level 2 in normal mode and it hasen't had a harsh shift since. Any idea's ?