Drivers rear lean after 3rd gen coils installed on 2nd gen

Did you get the frame replaced and the shocks and springs at the same time? If so there could be many more causes.

 

Yep, goes to dealership Tuesday, I'll post the results from that visit

 

Called dealer and they said both front springs are the same part number either can go on either side. So that’s not the issue

 

Back from dealer, says everything checks out normal, springs and shocks good. Says may need to settle after frame replacement. ?? I’m not buying it

would helper springs or add a leaf fix the issue if it’s a weak leaf spring making it sag on drivers side rear?

 

Maybe install this? I have a full 3rd gen TRDOR swap, leafs and all. I notice sometimes it looks like my rear leans drivers side as well. I may have installed the leafs on the wrong side, but it’s not bad enough for me to do anything about it.

 

When I stiffened my front end with new struts and coils, the rear picked up some load. It picked up more on the driver side from weight transfer, plus that rear spring was softer than the right.

On the alignment rack the ride height was good if just a 1/4" lower on the driver side in back. This could be frame twist. It's an 8 year old pickup.

Anyhow that weaker rear spring is causing it to wander at speed, as the weight comes on and off that spring.

As weight comes on the spring the truck will steer opposite (To the right) as the left wheelbase increases.
Upon rebound the truck straightens up.

I see this as a continuing issue as long as the truck is unbalanced so much left-to-right. I can buy new springs, but they will do the same in time.