Why did DHS revoke your Global Entry?
You should have a letter viewable via your TTP account (
<%= APP_TITLE %> and click LOG IN at the top). The letters are never generic, they detail what specific rule you broke. The most generic thing they indicate is they no longer can classify you as "low risk" but in every case I know of, an appeal reveals those details.
I have personally know of three people losing their status and each was because they "have been found in violation of any customs, immigration, or agriculture regulations or laws (in any country)." I have traveled and heard second and third hand about others being revoked, and most all lost their "low risk" when they were difficult with TSA or CBP personnel and was labeled "uncooperative."