From the USCCB:
Is the doctrinal authority of the Catechism equal to that of the dogmatic definitions of a pope or ecumenical council?
By its very nature, a catechism presents the fundamental truths of the faith which have already been communicated and defined. Because the Catechism presents Catholic doctrine in a complete yet summary way, it naturally contains the infallible doctrinal definitions of the popes and ecumenical councils in the history of the Church. It also presents teaching which has not been communicated and defined in these most solemn forms. This does not mean that such teaching can be disregarded or ignored. Quite to the contrary, the Catechism presents Catholic doctrine as an organic whole and as it is related to Christ who is the center. A major catechism, such as the Catechism of the Catholic Church, presents a compendium of Church teachings and has the advantage of demonstrating the harmony that exists among those teachings.
Is the doctrinal authority of the Catechism equal to the documents of the Second Vatican Council? Just as the Catechism contains the most solemnly defined dogmas of the Church, it also contains the teachings of the Second Vatican Council. The worldwide consultation of the bishops that preceded the promulgation of the Catechism gives it a collegial character. It is, as Pope John Paul II said, "the result of a collaboration of the whole episcopate." It would seem, however, that the Catechism did not have the benefit of the complete exercise of effective collegiality that accompanies the writing, disputation, revision, consensus, agreement and eventual promulgation of documents of an ecumenical council. But it must be noted that the form of a catechism is distinct from the form of conciliar documents. They are complimentary, but they are not identical.
Does this mean that the Catechism can be disregarded? No. The Catechism is part of the Church's ordinary teaching authority. Pope John Paul II placed his apostolic authority behind it. Its doctrinal authority is proper to the papal Magisterium. In Fidei Depositum John Paul II termed the Catechism a "sure norm for teaching the faith" and "a sure and authentic reference text." He asked "the Church's pastors and the Christian faithful to receive this catechism in a spirit of communion and to use it assiduously in fulfilling their mission of proclaiming the faith and calling people to the Gospel life."
http://www.usccb.org/beliefs-and-teachings/what-we-believe/catechism/catechism-of-the-catholic-church/frequently-asked-questions-about-the-catechism-of-the-catholic-church.cfm
Gotta keep your words straight..
dogmatic is not = to infallible
Yes it contains the handful of "infallible" proclamations of the magisterium /pope, yes it also contains the teachings of the Vatican council .... but probably 95% has never been declared infallible teaching ...
The Catechism of the Catholic Church, as published in 1997, is only infallible where it states the truths of the faith that have been previously defined in Ecumenical Councils or infallible decrees of the Roman Pontiff.
The same goes with the previous Catechism of the Council of Trent that we all used to know by question and answer, like the Baltimore Catechism. Only items in there that were previously defined in an ecumenical council or by the Roman Pontiff are "infallible".
We can find items in the new Catechism that pertain to practice, worship and other things that many do not adhere to, namely those who worship according to the 1962 Missal and have all Sacraments according to the 1962 Missal and pre Vatican II Rituale Romanum, under the "Extraordinary Rite" [currently Ecclesia Dei Afflicta Indult].