Try unplugging the box that controls the cruise, plug back in and try again to see if it works. Its under the hood it tends to build up moisture in the connector. I attached a picture of the box where the connector is located.
Is there anything wrong with the truck? Check engine light/ system error ect? If so, cruise won't turn on.
89018964 Module, HTR & BLO & A/C CONT this is an updated part # for the blower control unit if that has gone out.
Look into these, good luck!
Wednesday, April 3rd, 2013 AT 3:11 PM