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H3Lady,
On a normal type repair there is no actual verbal reporting to GM. If there is a problem with a repair, the technician may call TAC, who in turn opens up a TAC case. They are not necessarily noted by the service manager, or even the technician. The labor operation code is the triggering device for any problem.
Data analysts run data daily on all labor operation codes used the previous day. A large spike in warranty on any particular labor operation will spike the chart and the data analysts send that information to the service engineering team leader who has responsibility for the person who has this particular part.
From there the problem is researched by service engineering, and if required they will get product involved to get a newly designed part into production. While this is happening, the service engineering team works to see if there is a solution to the parts out there.
If there is, a technical bulletin will be issued and sent to the dealers via GM-Dealerworld; however, if other parts are required to fix the problem, the bulletin may be put on hold until those parts are available.
Normally, when a problem occurs, GM jumps on the problem pretty darn quick and resolves the matter.

I will have to agree, that in most of these cases, the problem lies with the dealer's technician who installed it incorrectly. No excuse, but it does happen.

To answer the question on whether or not they will be on a vehicle due in this week and ordered with the vehicle, here is how that process works.
When you order a vehicle, there are two different categories of option codes; RPO (regular production option) and RPA (regular production accessory). RPOs are installed at the plant, these are the radios, sunroof, luxury and adventure packages, etc. RPAs are installed by the dealer, but they are part of the MSRP. When the vehicles VIN is scanned at the end of car final, this scan triggers GM service operations to ship any RPAs to the dealer. The dealer will receive this large box (or boxes) with the RPAs labeled with the VIN of the vehicle.
When the vehicle finally makes it to the dealer, the dealer is responsible for the installation of the RPA. So, if a vehicle shipped last week or earlier this week, there is a very good chance the RPAs will already be at the dealer.
Now, to add some confusion to his, the dealer can also order these items separately and install them as a dealer installed accessory. Not part of the MSRP, but an added price.
For example, my H3 will be at the dealer tomorrow, and the dealer will install the brush guard and mud flaps as dealer installed accessories, since the vehicle was not ordered with these items. Costs a little more, since it is not part of the MSRP, but the same place installs the same item.