The buzz words are that "Characterization of service as General (under honorable conditions) is warranted when significant negative aspects of the member's conduct or performance of duty outweigh positive aspects of the member's military conduct or performance of duty outweigh positive aspects of the record".
It will jeopardize your VA beneifits (i.e. no GI bill) and you will not be allowed to reenlist or enter a different military service. It is not nearly so bad as an OTH or a BCD and I suspect many of the hiring officials at company's or organizations who would stiff arm you if you had a OTH or BCD, will give the other aspects of your resume a chance if you have a GUHC).
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