2016 Silverado 6L80 transmission trouble, won’t engage into drive or reverse unless I rev it up

[Ryan16]

Hello, I have a 2016 Silverado, 5.3 and 6L80 transmission, i just had the transmission replaced with a remanufactured one from Detroit axle, it was giving me trouble from the time I drove it out of the mechanics  parking lot, so they covered it under warranty and sent me another one, just had it installed and it’s doing the same thing, it will not engage into drive or reverse unless I give it some gas and it kicks in hard, and also, as I come to a stop at a red light or stop sign, it feels as though it kicks into neutral and will not move forward until I rev it up and it kicks in and clunks hard.. the fluid level is good. Any help would be much appreciated. Thank you in advance 

Edited March 23, 2021 by Ryan16

[rlcole321]

This might seem like a silly question, but does the truck roll easy when in neutral?

if so, what torque converter do you have in it?

[Ryan16]

I will have to check if the truck will roll easily in neutral, the torque converter was replaced with the transmission as well

[Daly]

Did the shop prefill the torque converter before install? Sounds like it doesn't have enough fluid to perform properly. 

[Ryan16]

That was my first thought as well, but I checked it and the fluid level was good 

[pokismoki]

techm might be bad, or its  got an internal leak , either bad piston or tranfer port seal is leaking where the techm mates to the case ports

[silveradosid]

there is a utube video on this problem and it was an oring in the rebuild kit that wasnt correct for the pump and it would leak off the pressure

[pokismoki]

there are many reasons

 

 

Edited April 24, 2021 by pokismoki

[Ryan16]

Had the transmission replaced twice in less than a month, didn’t fix the issue, had multiple mechanics look at it, nobody could figure it out, so I traded it in on a new truck, and not a Chevy. I made the dealership aware of the issues it was having  and they said they will fix it. Thank you all for your help

[JimCost2014]

1 hour ago, Ryan16 said:

Had the transmission replaced twice in less than a month, didn’t fix the issue, had multiple mechanics look at it, nobody could figure it out, so I traded it in on a new truck, and not a Chevy. I made the dealership aware of the issues it was having  and they said they will fix it. Thank you all for your help

What did you get?

[Ryan16]

A new ram 1500.. and I love it so far.. much more comfortable, runs great, and got a really good deal.  Hope it doesn’t give me any issues 

[pokismoki]

you'll see.... grass aint any greener with a RAM