Glad they are taking care of you. I deal with them on occasion, and they seem decent to work with. If the shop hasn't started repairs on the vehicle, I would ask around for a reputable shop. I have had customers that have had work done at sub-standard repair shops, that were not happy with the work done, and brought the vehicle to me to fix it correctly. On 2 occasions, the insurance companies would not pay the second shop to fix it, stating that "if the customer isn't happy with the work done, and since we already paid them to do the repairs, the customer has to take the vehicle to the original shop and have them fix it again, otherwise, they are responsible for all additional repair costs."
An insurance company can not tell you where to have the repairs done at, it is against the law. BUT, they can "recommend" a shop. A word of caution, **some** "preferred shops" get the work because they use aftermarket parts, and give discounts to the insurance companies.
I guess what I am saying is to shop around for the best repair shop. The insurance company will probably issue the check to you and the shop, since the truck has a lien holder on it.