Cruise control not working

I also was having internment problems with the blower motor not working and when I would turn the speed dial to setting 4 the cruise light would come on. I took a chance and replaced the ignition switch (not the lock cylinder) cost $70.00 at O'Reilly's auto here where I live. Took forty five minutes to swap. Had no effect on key programming for me. All is working correctly now for me. Just my outcome. I use these forums all the time and have been trying to add in what fixes worked for me to the forum.

My cruise control has not work for a year and when I was coasting down a hill my speedometer started to fall until I hit the gas pedal and it straighten back up. Would the speedometre sensor cause this and where would it be located. Would it be in the same place even for the super sport model.

Thank you so much. But I can't run any codes cause my car is not trowing any up accept my airbag light. And they have not been deployed.

What?

Randomly at no warning, my cruise control and ac/heater will not work. They both go out at the same time. When one is not working, the other is not working. So, when ac/heater is working, then the cruise control is working. Also, I can see the lights on the ac/heater go dim when it is not working. I'm not sure what that could be. Also, my heat does not get hot at all. It may get luke warm at best if it does manage to even turn on.

Dual Climate control? I dont think so. Fuses are tight. No lights in my dash have lit up. The Light on the A/C / Heat is almost always on regardless of it working or not. When It is working, it is much brighter. Sometimes there is no light at all, but that is somewhat a rare occurrence. Also, I can't cut my lights off at all. In other words, my headlights and rear lights are at full blast day or night in the off position.

They dealer said if I don't have any lights on even the diagnostic machine couldn't read nothing

When You say check the ground, do you mean a special bracket or do you mean a a few wires attached to a screw that is attached to the car's body? And it figures that the lights, cruise and ac/heat are working the away they are supposed to now. Its intermittent.

Do I need to buy new connector when I buy the new vehicle speedometer sensor?

I have replaced my vss and the speedometer is doing fine but now my check engine light is on and the code is P0717. What is wrong?