Transmission problem? Floating valve? Need feedback

[Irocchevys1985]

I have an issue it may be minimal or massive idk but I've seemed to notice a small hesitation or a lag between first and second...it's like as I start to accelerate and it gets to about 15mph going into second you can feel a slight pause and then a small jerk into 2nd idk if this is normal or what maybe a little feedback can get me pointed in the right direction?

[diyer2]

More info would help IMO.

How long have you had it?

How many miles?

Was the trans serviced per OEM specs?

Did you tow a lot?

Any changes occur before this started happening.

 

Could be shift solenoids.

Clutches?

[Irocchevys1985]

I haven't had the truck long I just bought it at the end of February.I don't think the trans has ever been serviced before but I could be wrong.when I bought the truck it had 88k on the odom,and I haven't done a lot of towing,but I've ran fuel injector treatments through and seafoam and I use mid grade gas ,it'll take a bit but I'll get him back to where he needs to be,,