No "CEL" codes.
AutoZone's scan tool only reads CEL codes, not ABS. BUT!... O'Reilly's scan tool did read the ABS codes.

Here's the dash.

Here's O'REILLY'S scan results of ABS, which I found on the tool by clicking that middle button on the left, SYSTEM STATUS.
C0460-5A

 

I saw one video where somebody diagnosed their wheel speed sensor using live data from their scan tool, I'm wondering if something like that would make the problem obvious in my situation with this c0460-5a code thrown by the ABS system? Or, how can I recalibrate the steering angle sensor?

 

After driving some more and looking at the steering wheel slightly off center, I took a look at the wheels from a head on perspective and sure enough, the wheel that got the curb appears visibly far too negative camber

 

First get an alignment and ask if they have the equipment to calibrate the steering sensor. Many good shops have Tech2 like computers that can do the job.
If the camber is way out she hit the curb a lot harder than she is admitting and may have caused fatal damage. There is probably some broken parts, especially the Lower Control Arm bushings and tie rod ends

The repair is NOT re center the steering wheel. It IS fix whatever is causing the steering wheel to be off center. Then have the sensor recalibrated by computer.

You already know what the problem is; further testing won't fix anything.

 

I'm planning to get it aligned still. I took it in to get aligned today and they found the bag ball joint, so I replaced the control arm.

 

Replace the LCAs in pairs. The replacement should be cast AL NOT stamped steel.

 

I've seen "stamped" in a lot of the matters regarding lca's, is there a push for the stamped steel ones? And they're not even good idea?

I removed an AL one and replaced with an AL one. It wasn't cheap, $160, O'Reilly's, but the alternatives were to let it go... And wait for a cheaper part to arrive...(hoping nothing catastrophic happens in the mean time)... Or, pay the shop an extra $60 for the control arm, and then $160 labor, for a total bill of about $435.

It was a good repair experience, not smooth, just like any first time job, right?

Driving it afterwards, I took time to try recalibrating by turning the wheel all the way left... Then all the way right... Then repeated that. The TC indicator disappeared. It still needs a front end alignment.

 

The aluminum LCA’s, depending on the brand don’t last long either, particularly the rear bushings. I recommend you change the other side also, before the alignment, inspect the tie rods for damage (bent) or the ends loose.

 

I got the alignment done today. I'm hoping that's enough for the suspension and traction control for now because I'm so short on time and $ right now. And I've got a P0606 code (intermittently) https://www.chevyhhr.net/forums/gene...0-64379/page2/

 

Thanks for working on this everyone, truly appreciated.
On to fixing the next thing!