One problem related to rearview mirror has been reported for the 2004 Chevrolet Suburban. The most recently reported issues are listed below.
The outside temp reader located in the rearview mirror has read 140 degrees for almost 2 years. Repairs were attempted, but unsuccessful. I feel it is a safety issue during the winter. . . I travel with my 2 children over many dangerous mountain passes and the "ice" reading would be nice.