2003 s10 blazer, 4wd. ABS light comes on and the ABS sometimes kicks on while I'm braking. E Brake light flashes a few times on dash and speedometer jumps around. Had my shop guy hook his computer up to it and it gave us that code and he said its the "Rear Wheel Speed Sensor". Now I just bought the blazer, and the dealer said the light was on when he got it, but he replaced the ABS module under the hood and the light was off... Up until the day after I brought it home.

Question is.. Where is the damn thing. lol. And is it easy to replace?