use some loom tape like this to prevent it from coming out https://www.amazon.com/Junipel-Premium-Damping-Electrical-Quantity/dp/B01LRFFF3I/ref=sr_1_8?keywords=harness+tape&qid=1554481527&s=hi&sr=1-8
I have the part number for that cable some where but its just a mini usb in the inside. you could by something like this plug it in then plug your iphone able into that. https://www.amazon.com/SaiTech-Pack-Cable-Digital-Cameras/dp/B00VWUTJ22/
edit: i just remembered the cable your looking for doesnt exist gm doesnt make a cable thqt goes from that connector to usb a femail. It goes that connector to mini usb because it normall connects to the hmi
HOLY SHIT look what I found! Its a short version, which makes me wonder about this entire wiring thing.
https://www.amazon.com/ACDelco-22885186-Original-Equipment-Cable/dp/B00B4L2QRY/
16.00!!!!
I just did this. Aux didnt work
Edit: I messed with this and I thought i had a different wiring than what you listed here, but now looking at what I wrote below its the same and it is working can confirm. I also found this cable.
https://www.amazon.com/ACDelco-42465826-Original-Equipment-Cable/dp/B01K8C5Q8K/
youre right, and looking at the cable again the part where it exits the gray connector would put in the way of the other plug on the front hub. IDK I have an extenstion cable that im gonna screw with tonight but I also have the green grey on order (got it from jet.com for 20.00) so ill let you know more of what i find on thursday
Maybe but looking at the pictures of the hub here
I would think that grey would fit in the hub. The keying looks the same
HMI Green to Grey (Front USB Hub) Part 19303284
HMI Black to Brown (Inner USB) Part 19303285
and this new cable output of front usb to glove USB Part 23225657
Alterntively would could use use generic Microusb male to USB A Female or a cable like osirus mentioned
https://www.amazon.com/gp/product/B015HKPDAE?pf_rd_p=d1f45e03-8b73-4c9a-9beb-4819111bef9a&pf_rd_r=HJVW9D9NJGNQETAPW9T4