New Leaf Springs Needed ?

Those might be free to you at the dealer under warranty recall. I got mine replaced for free on my 2006

 

I just did 5100s all 4 corners with OME 884 upfront, and general springs HD leaf pack in the rear and it is much better now on my ‘13 access cab.

That’s green white and red oak in the back, basically no squat. I would have been sagging good with stock

 

Before I got rid of the OEM leafs on my 2020 for an AllDogs HD leaf pack, my leafs were sagging a tiny bit and I hadn't really even used them too much.

The OEM leafs on my 2020 were some of the softest springs I've seen.....it might be worth your time to look elsewhere if yoir going to load weight back there.

 

Stock leafs are fineeeee. If you need to lift the rear to match the front get .5” or 1” leaf spacers from AutoZone and you’ll maintain the soft ride. Aftermarket Leaf packs are too stiff and uncomfortable when normal driving. Find a newer stock leaf pack on marketplace, your 20 year old leafs are probably sagging. Quick easy fix

 

I was worried about the ride being too stiff with the HD leafs from general spring but it’s not. The whole ride is stiffer with the 5100/OME then it was with a stock suspension with 143k on it.
I think it rides wayyy better now and I can actually put loads in the bed now and drive without being pointed skyward

 

I did 3rd Gen takeoffs all around, 5100 shocks in the back and supersprings (Blue) when I carry a load. I’m very happy with my setup, but if I had to do it again I’d buy rear springs from a spring shop. The following url was posted by another user:

https://duluth-superior-spring.business.site/

I’ve also heard positive things about Alcan leaf springs.

 

Same, same exactly for me with the HD AllDogs springs.
Way better ride, and things now stay nice and level, even when towing.

 

did you go medium or heavy? I saw those had two options. The generals were rated for 500lbs over stock

 

Heavy. I have a rack with a ton of other crap, plus armored bumper, extra gas and usually have a bed full of stuff, plus a trailer that has a + 290lb tounge weight.