For SI the stuff on this link: http://thelowback.com/fix.htm#exercises The manual correction will work if you use a band set anchored up high too, just be sure to get the angle right.
These vids helped me too. For us weightlifters, you’ll need to use a bit more than pressure from your hands. http://www.do-it-yourself-joint-pain-relief.com/sacroiliac-joint-pain-relief.html
I do this after first warming up the area with general light exercises. When my SI clicks out of place and I’m having a lot of trouble popping it back into place I’ll cross friction by placing a broom into a corner and lean the tight ropy parts of my hip close to the SI into the round part of the broom and hold it gently moving it into there for a minute or so. I do this only if lax ball work and stretching and tractioning doesn’t fix the problem because it does cause a good bit of inflamation and soreness and tenderness. The premise is that you’re basically opening up tight tissue and reinflaming the area but having it inflamed where the SI should be so your body can build back the correct way. Followed by lying clams and very strict one leg db romanian deadlifts and bird dogs with a very slow tempo to make sure it’s in the right place after loosening things up. Do not take anti-inflammatories. You actually want it to keep your SI there while it heals.
Google ‘band man dave tate’ and you’ll see a couple of things for band tractioning for the lower back.
The different piriformis stretches, but not for the symptomatic side. The opposite one. At least for me I found that the opposite side was actually the one with tight muscles around the hip. I found this out by lying on my back with knee up, feet flat on the ground, butt on the ground. Then put my ankle on the opposite knee and relax and have an observer see which knee goes down farther. Granted, on my symptomatic side my psoas and hip flexors are tight and I’ve found lax ball work and heat to be most effective for that.
I am not a fan of anti-inflammatories/pain-killers. I save it for only when I absolutely need to in order to get work done.
Doing this stuff has allowed me a 2.5xbw deadlift and a 2x squat relatively pain free. Hopefully, I’ll still be singing this tune when I’m older.