I thought I had a transmission problem - but now it seems like my rear wheels lock up. When I drive my 1999 Rodeo for 30 minutes or more in the city, it seems to lose power and 'drag'. Went to a transmission shop who said it was fine. Today when it happened, I jacked up the rear end and the wheels would not move. Seems like the emergency brake was locked on - I did not have or put it on. But the rear brakes were locked. After setting for 30 minutes or more, the brakes cool off and release. Only to start the problem all over again. Where do I go from here? ABS, e-brake, calipers? Any advice please?