Taking my truck on a 600 mile trip this weekend and my cruise control doesn't work. Lay night I replaced the rear wheel speed sensor last night and I no longer have my abs and brake lights on in the dash. Now when I hit the cruise control the light comes on but goes away after a couple seconds. My ac and heater work fine. Any advice?

 

Just came to the realization that the pod that is supposed to be under the driver side battery is not there. Anybody know the name of this part?