I received that same letter. Basically it says that GM will after it had determined you have a loss that is covered they will pay for the repairs. Only after they approve it. There is a second page which is the form on which you apply for reimbursement. In that reimbursement form is a paragraph that states "In consideration of the reimbursement provided by M the undersigned owner(s) forever releases and discharges General Motors LLC and any authorized GM dealer, and each and all of their respective current and former directors, officers, shareholders, partners, principals, agents, employees, attorneys and accountants, and any predecessors-in-interest, assigns, subsidiaries, divisions or affiliates, and each and all of their current or former directors, officers, agents, bla bla bla of and from all disputes, claims, causes of action, actions, judgements, liens, indebtedness, costs bla bla bla based on moisture-related claims or moisture-related issues concerning the headlamps of my Cadillac SRX.
Or in other words you get one claim.
The letter also states you have 90 days from the date of the letter to file a claim. It also states if you feel you still have a moisture issue with your headlight assemblies you can take it to a dealer and they will determine if they headlight components should be replaced by GM under this letter.
Here's the kick in the rear. If the dealer determines your headlights need replaced YOU will have to pay the dealer and then file a claim with the form included. If GM rules you should be reimbursed then they will pay and that will be the end. That is IF GM approves your reimbursement request.
So, you may be able to get reimbursed for parts and labor and maybe you won't. I find it odd that GM is demanding you pay the dealer and then get your reimbursement from them. Maybe there is another bankruptcy petition in the future and they can erase these debts and not have to pay the claims.
For me? It's just another reason I won't be shopping at any GM dealership for my next new vehicle. This SRX turned out to be a dog (expensive to maintain dog) and I'll take my chances with another brand in the future.
It's not a recall or a TSB, it's a letter to get you into a dealer and possibly get your money back. Something smells fishy here. JMO