cruise control not working

Use an electronics cleaner and dielectric grease on fuses, this should solve problem.

In addition to the above symptoms, the RPM's would increase 200-300 without a corresponding increase in speed. This condition occured in or out of "cruise" mode and frequently when car was cold. Cold weather seemed to make it worse. However, at times, after a warm up the cruise worked fine.
Frustrated, I took car to my shop. They discovered that the wire harness connected to the trans speed control sensor had corroded. They replaced wire harness and speed sensor. Works fine now.

Hope this helps those who were looking to replace the brake light switch. Perform electrical diagnostics on the trans speed sensor connector first.

cruise control quit working and its not any fuses

Hello well first if its not any fuses than if your cruise control switch is on the colum on the left side, they call that a multi function switch which will go bad causing it not to work. You will have to take the colum apart to do this because the wires run down through to the bottom. I hope this will be of some kind of help to you.

Earlier this week, I was driving on the interstate, I touched the brake to take a ramp. When I hit the resume button the light for the cruise came on, but it did not hold the speed. I've checked the fuses (2 in the main box) and reset the computer. To no avil, it still doesn't work. Help! I drive for my job. Could it be the speed module?

Have it scanned for any codes the PCM amy have stored.Could be many different things lets see if it has codes first and get back to me.

I had the car scanned and no codes were recorded. My guess is something broke. But what do I look at first? Thanks for the help.

Check the brake light switch, it is also for the cruise and it might have stuck "open" so that the cruise thinks that you are on the brake

Well I've installed a new brakelight switch. However, the problem still exists. Could it be the switch on the steering wheel or something with the computer?

Could be either one, If all fuses are good then it sounds like some electrical diagnosis will need to be done. You have a meter and or test light?

Electrical problem
2005 Chevy Impala 6 cyl Front Wheel Drive Automatic
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when I push the button to engage the cruise it wont set. what are the possible causes of this and what are the solutions

first thing to do is check the brake light switch and make sure the brake lights are working mainly the high rise one aka 3rd brake lights.

Hello, intermittently my cruise control will disengage as I am driving down the highway with it engaged. When this happens you feel the car gives a little jerk and the dash light goes out for the cruise control. Its seems once this happens it will not work until you turn off the car and try it on the next trip. Also, sometimes when I go to turn on the cruise control it will not engage (no light on the dash board)..I would say that the cruise control works about 75% of the time for turn on but fails probably about 30% of the time while it is engaged...

Any ideas on what might be wrong?

Thanks,
Scott

you will need a scan tool to check for trouble codes. the cruise module is loosing a signal from somewhere. could be a brake switch, set switch ect. a scan tool will show this when it happends

Recently my cruise control light would come on on my dash lights, and the cruise would not work. It has stayed on for days at a time. I realized that at the same time that the cruise light was on (with the switch turned off) that my heater/AC system would not work at all. I could not change the air flow buttons, when turned on no air would come out, and even the light for the rear defrost would not work when pushed, the heating/AC system was completely out.

The strangest part; when the cruise light is off, the heater/AC works, when it is on the AC will not work, and then gone. I am assuming a connection in there.
Any suggestions as to what can be causing such a stir? I have had all of my fuses checked and they are all good. Also, I have recently put in a new battery in preparation for an Arizona summer.

Please advise!

This sounds like a BCM issue. I would try to get a sued one and plug it in to see what happens. Here is the location.

Check out the diagrams (below). Please let us know what happens.

Cheers

I took my car into the dealership and they told me that the problem is my ignition switch. Has anyone heard of this before? I am confused how those would tie together! Please advise.

did you ever get this problem fixed and what was the issue? I am having the same problem. Thank you.

I had the ignition switch replaced, and the A/C blower started working again. Still no cruise, but I can live with that.

I had this problem and the dealer replaced the BCM for $489.00 all fixed

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.

Great addition to this thread! Please feel free to help out whenever you are on the site. :)

Cheers, Ken

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.

scan for codes first and check fuses and relay under hood for cruise. see pic

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.

have scan it as auto parts can't scan for anything other than engine or trans codes.

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.

Hi
This is a strange one but lets see what we can do.
O.K. things in common both work off same fuse and are controled inpart by PCM. Check fuse to see if it fits tight into terminal. Has a light on dash or A/C controler come on. Also is this dual climate control?
Let me know
Thanks for donate

have a pro scan for codes.

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

Headlights was a good clue all these components share a common ground. Check ground on left side dash on the left side of brake pedal bracket.

I got you mixed up with another vehicle sorry

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?

Yes wires attached to brake pedal bracket. The ground in a car is the body if it gets high resistence all types of weird stuff can happen. Make sure all connections are clean and tight.

no you shouldn't unless the connector Is damaged. in that case I'm not sure who handles that other than a dealer. have you check relay under hood as well as fuses for cruise they should be marked for location under fuse box top. Other than that I have no further suggestions without actually seeing this myself.

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?

it may be that the harness was stretched when you installed the vss as this is the input speed sensor for turbine. It is inside trans. also if no vss signal makes it come on as well. so go to an auto parts and see if they will erase the code and then drive it and if it comes back on have amechanic look at it. that sensor could be bad or it's a connection problem. it is inside the trans and it may be apoor connection for large plug at trans as well.