Rear brakes won't disengage when I put it in Reverse on 2006 Cadillac DTS

Parking brake releases when I put it in reverse. Additionally have done it manually to make sure they are released but when I go into reverse the rear wheel brake on the passenger side is still on and tire will not rotate but will only slide. What do I need?

by in Newark, DE on March 21, 2010
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1 answer
ANSWER by , June 23, 2010
what do i need?