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RollCoal9000 · 04-23-2020, 08:04 PM

Hooked up to a trailer today to haul some cows. Gross about 26k

Fresh 48re done locally, dpc triple, billet shafts, clutches, transgo, GM solenoid.

While towing, under WOT in D. Truck shifts 1, 2, 2 LOCKUP, back to 2, and wont shift into 3rd unless I let off. Haven't had this happen empty. Nothing slips, lock it in 2 locks up no problem, can pull a hill @60 in 3rd lockup no issue.

Other weird things it does, while empty between 40-45 for a split second under light acceleration it will occasionally shift into od/od lockup then right back to the correct gear. If I do a manual 2-d shift it flares. And with it in 4low and some weight behind it I have to be careful slowing down or the tc doesnt unlock and it almost stalls.

I dont think its mechanical. Hoping it's the transducer or solenoid and not an actual VB issue. Truck is a 2006.

04-23-2020, 08:04 PM	#1
RollCoal9000 Name: RollCoal9000 Title: Green Behind the Ears Status: Not Here Join Date: Feb 2019 Member`s Gallery Posts: 99	48re weird shift issue while towing Hooked up to a trailer today to haul some cows. Gross about 26k Fresh 48re done locally, dpc triple, billet shafts, clutches, transgo, GM solenoid. While towing, under WOT in D. Truck shifts 1, 2, 2 LOCKUP, back to 2, and wont shift into 3rd unless I let off. Haven't had this happen empty. Nothing slips, lock it in 2 locks up no problem, can pull a hill @60 in 3rd lockup no issue. Other weird things it does, while empty between 40-45 for a split second under light acceleration it will occasionally shift into od/od lockup then right back to the correct gear. If I do a manual 2-d shift it flares. And with it in 4low and some weight behind it I have to be careful slowing down or the tc doesnt unlock and it almost stalls. I dont think its mechanical. Hoping it's the transducer or solenoid and not an actual VB issue. Truck is a 2006.