2009 suburban ABS, stability and brake light
 

What kind of end play should the rear axles have? The story below leads up to my question.

So driving home the other day and came to a stoplight. The ABS, Stability light, and brake(dash light) came on. I drove another 8 miles to the house, with everything apparently functioning fine. My android torque scanner picked up no codes. Get home take 2 braking system fuses out(put them bback in) and start vehicle and trouble lights are off. So I think wheel speed sensor. In the last month I have put brakes all the way around, this week, I had tires put on all the way around and a front alignment, so I looked at wheel speed connectors, etc, did some jiggling nothing obvious. So I hear a little creak as I am moving around (I assume it was the caliber moving in and out as I lean on drives side rear tire) Grab the floor jack, lift the rearend. I notice I can slide the rear tire in and out(more than I feel comfortable) so I pull tires off and tear it apart looking for something obvious. NOTTA! no excessive oil coming out of axle seal. Just dropped the pan, nothing major(coating of metal on magnet), oil didn't smell burnt, no chunks.

So my question is, what kind of end play should the axle have?

That a 10 bolt? I've seen those c clip axles have some crazy play.

Yea I think, didn't dig into part numbers. Internal inspection looked ok. So it i getting buttoned up. I am thinking if I could get an EFI live license for my V2(mine is only the dodge version), I could look at more codes correct? What kind of cost is that?

AAM has lots of play, I have yet to see one have so much that it sets at rear wheels speed code.

Get the codes and report back. My off the hip guess is gonna be a steering wheel position sensor code, since you have a alignment done recently..

Well put about 50 miles on it, no lights yet. Only thing I did was pop rear diff cover, try to pull a rear speed sensor and change the fluid