I'm attempting to install a front and rear dashcam and the trim is proving to be a bit of a challenge. I successfully(?) removed the A pillar trim bit it seems the clips are either destroyed or designed to be single use to where you have to replace the clips and potentially even the trim piece itself because it's all chewed up from the clips staying in and the trim coming off. See pictures for an illustration of this debacle. There are interlocking outward facing teeth on the clips that remained in the body.

Anyway, the other pieces of trim that I'd need guidance on potentially are the b pillar and the center trim piece on the hatch so I can get the grommet off without destroying it. Maybe even the trim pieces behind the passenger seat in the trunk on the side and I can't remember at the moment if there's a plastic piece in the center of the trunk on the body side of where the trunk is.

I have plastic trim tools and even a plier that you can slide in behind the trim and depress the handle to spread the jaws apart. None of this came in even remotely handy with the a pillar, I just had to brute force yank it off; the single solitary video I could find was about the a pillar so I had at least some idea but the result was very unsatisfactory. After seeing what happened with these clips I'd really like to avoid prying blind.

I don't know if it's just this vehicle or all modern vehicles but there seems to be a dearth of information. The rear speakers may as well not even be there and I'm sure the dealership would say that's normal. Total lack of information on this as well.

 

These are difficult. Sometimes designed to be kinda tamper-proof because of the underlaying airbags and sensors they break and need to be replaced.

Several options come to my mind:

Has GM prepared for cameras? (wiring already available)?

Have a look at the GM Outfitters site https://www.gmupfitter.com/

Route the wiring through the floor under the carpet.

Are there Bluetooth options?

My 5 cents worth of thoughts.