just like the title says my cruise control wont switch on i dont know if its a fuse or the button is messed up in the steering wheel but everytime i try to turn it on it wont do it ive pressed it several times then itd say cruise control was on but it would switch off fast. also the coolant in the reservoir is full but right in the front where you can see it moving around is nowhere to be found i dont know if the intercooler pump is done for or not. any help would be greatly appreciated.

 

an abs problem will keep the cruise from working a fuse bad button take a hammer and smack the pump to see if its workig

 

Did you fill the front reservoir? Theirs a difference between that and the actual coolant reservoir.

If you fill it up with dexcool or distilled water, you should see it swirl around if the pump works still.

 

If you have a brake light bulb out the cruise won't set. Check it.

 

My cruise does the same thing, and I've been trying to fix it for over a year.

All 3 of my 3rd tail light lights work and I have no brake lights out either.

I'm thinking it's the clutch switch that's nestled someway up the dash above the clutch pedal.

 

If you're running an LED 3rd brake light without the resistor the cruise won't work. If the wire back there is lose, same deal. I chased this around for a little bit till I finally got it squared away.

Also, you're right, if you can reach your toe under the clutch and lift it then the switch probably isn't being depressed and then no cruise.

 

I can do this. My clutch pedal will move up a bit if I pull it forward with my foot. Sign of bad switch? I thought that amount of play in the pedal was just normal.

 

Mine doesn't. The switch isn't what I'd be concerned with. Are you having a problem with your cruise?

If so, try lifting the pedal. Does the cruise go on? If it does, then it isn't the switch.

 

Yes, my cruise switches on and off really fast like the OP's.
"lifting" the pedal doesn't make it work. It moves forward a bit, but still spams out on the DIC, like OP.

 

The best way to find the issue is to have a GM dealer hook it to a Tech2 and see what the BCM has to say, but most of them will charge you a diagnostic fee to do that.

 

Disconnect the battery for a little while. That fixed my cruise control issue.

 

I'll eventually do that when I get some extra cash, because I know this summer I'll be driving a lot for vacations, and cruise will definitely be nice to have. Maybe just like $300 to fix or so. I don't really care, man. As long as it works, because chasing **** like that around is annoying.
Nah, never fixed it for me.

 

You don't have to pay them to fix it, just to get you the BCM codes. Probably be like 100 bucks though.

 

Is there any other way to get BCM codes other than a Tech2?

 

I don't know of one, which is not the same as no. Someone else might know.

 

thanks for the tip that worked like a charm!