The rocker switch at the top of that cluster also turns off and back on cruise control. Never understood the reason for two buttons right there that do essentially the same thing. Maybe there's some slight difference between the two. I also never understand why you'd want to turn off the cruise control. I leave my on all the time and occasionally I set CC and utilize its functions. But I never turn it off. I guess the engineers and bean counters would say, off is good because it prevents you from turning on CC accidentally, to which I would respond, if I did happen to turn on cruise control accidentally I would quickly depress the clutch pedal or simply turn it off. IOW not a problem.

Exactly, because the same function selections are not duplicated rather there are similarly named functions that are slightly different (**** sets the mode, steering wheel controls set the DIC display).

 

There is no "coast" button. Holding the Set button down decreases the set CC speed. So if you set the CC to say 75 MPH and then you tap the set button it will decrease from 75, 74, 73, etc. on each tap. If you hold the set button down it does what you call coast. The set speed is in the DIC. It appears green when CC is on and white when CC is off. It has "..." if you just started the car and have yet to set a CC speed (though I don't understand why it doesn't just retain your last CC setting.

BTW Tapping and/or holding the Resume button does the same thing but increases the set CC speed. These are handy to fine turn the set CC speed.

Because they are not the same function. See other posts.

More "facts not in evidence". You sure to like assuming things as if they are facts.

 

Actually no it does work that way. It does not cancel the cruise control. Not sure what button you're hitting. Hit and hold the Set button.

It does exactly that.

It will do exactly what it is programmed to do. If you have the CC set at 70 and your in 1st gear and hit resume, it'll try to wind out 1st gear to 70 MPH.

First, in an M7, it's best if you want to disable cruise because say you're in 1st gear and it's set to 70 MPH, do not hit the brake pedal, hit the clutch. Stomping on the brake pedal would probably surprise anybody driving behind you. Hitting the clutch will also disengage the CC an leave you coasting forward.

And no, neither the clutch nor the brake pedal will turn off CC but CC will not be in effect, rather it'll be on and ready for use.

 

Both, my new 1974 Cadillac Sedan DeVille and my new 1977 C3 Corvette had spring loaded push buttons on the middle ends of the turn signal stalks to engage/coast, and reset the cruise control speed, depending on the speed you were traveling at when you activated it by pushing the button. The Cadillac had on On/Off toggle switch on the left side of the steering wheel dashboard. The Corvette had only the push button to On/Set the cruise control. Both GM cars' tapping the brake cancelled cruise. In other words - the Corvette's cruise control was a single button. With this button you Set and could Coast the car to a lower speed. To set to a lower speed, hold button in until desired speed is set. Then release. The C7 hasn't any Coast function.

It's got On/Off rocker button, Set button, and Resume button. Way too many buttons, and NO Coast. Tapping the brake pedal cancels the cruise functioning. It does not turn it Off.

Pushing in the clutch during cruise control operation causes high engine revs. LMAO!

 

It's just that the one at the top turns it off completely. Set and resume are nonfunctional at that point. The one that is lower and in the middle of resume and set will let you resume, or set a new speed. I never completely turn off cruise control myself.

 

The numerous cruise control buttons had to be a Millennial Team Invention. They ALL went home with trophies. Hahaha!

My new C3 with optional cruise control used one hidden, spring loaded button, and worked perfectly.
All those Millennial clowns got a prize-by-commitee trophy, for seeing how decorative and space wasting their project could be! #LOL!

JoeM, did you own many C3s when they were new?

 

I didn't but my older brother had a 1973. Blue. And Fast! We always shared cars. I got to drive it quite a bit. I had a 1964 Austin-Healey 3000. He preferred that, so I had the C3 most of the time as he preferred the Healey. The Healey was just one big problem, which you probably know. That C3 was trouble free and ended up with 275,000 miles on before we got rid of it in 1997. He drives a Mclaren 570S. That's a pretty good car. My son has a 2018 Z06 Manual. He had to have a special seat made for him as he is a giant. 6'9". I'm going to be upgrading in the near future. Probably a Z06. I was considering a ZR1, but I don't like the front facia. OK, but I'm not going to buy something that has to grow on me if you know what I mean. And I just can't see spending another 40K or so for 105 more HP. It just goes against my grain. I like the Mclaren, but it is just a little to refined for me. I think that is probably how the C8 mid engine may be. And I don't want to buy the first model year anyway. I'm burning for more power. I can't even sleep at night thinking about a Z06. My son left his with me a while back for a few months. I wanted to throw rocks at my Stingray after driving his. But it has been reliable I must say, with 75,000 miles on it. But dang! Punching that Z06 spoiled me.

 

I just went out to the garage to listen to XM radio on the Corvette. The cruise control collage/cluster has 4 buttons that do a total of 5 commands. What a waste of buttons and space!
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ONE hidden, out of the way button (as I wrote above) did it ALL on the late '70s Corvettes!

 

IIRC both buttons do the same thing - turns it off completely.

Besides, what good would the middle button be if it just disengaged the CC? It's far easier to just depress the clutch or tap on the brakes.

What would really be useful is to retain the last CC speed set when the car has been turned of and you turn it back on. I don't really use the CC at say 40 MPH but I often use it when traveling at highway speeds. If this feature were present I'd probably just permanently have CC set at say 75 MPH.

 

In the airplane business, we used the words "armed" vs "engaged" to describe some of these functions.

If you are driving along in Cruise and push the middle button, it "disengages" the Cruise but Cruise remains "armed" and ready to "engage" if you push the bottom button.
If you push the very top button, then the Cruise is "Off". If you push the very top button again, then Cruise is "armed" but not "engaged".
Can't recall how it's worded in the manual, but GM probably uses a lot of words and still manages to leave everyone confused.

 

I will have to check this out but as I said, when I disengage the CC, I usually just use my foot to hit either the clutch or brake.

 

Why are you like that?

OP, and anyone else interested that doesn't already know, you can set the HUD differently as well. I like having Sport on the instrument panel and Track on the HUD, mainly because I like the shift lights on the HUD.

 

Because I feel it's right to help a person to help themselves and to admonish them when they fail to make the effort. In the end I feel it leads to more people who make the effort to figure out their own problems and not bother others to do that work for them.

To throw the question right back at cha, why do you feel that that approach is wrong? I fully expect you will not answer that question or go sideways.

 

If you're cruising along at a set speed and you want to "coast down", you have 2 very easy solutions. One, tap the brake to disengage the cruise and the car will coast down, as soon as you hit the speed you want, simply push the set button again. Or, you can keep hitting the set button for each mph you want to drop your speedd. It's not a difficult thing, so why are you making such a big deal out of it? It sounds to me like the C7 really isn't the car for you, as you just don't understand how it works at all, in any aspect.

 

GearheadJim,
That's exactly what is different from all other cars I've owned. The C7 doesn't have a Coast button that re-engages cruise once you release the button. You have to push another button to re-engage the cruise. Phenomenally stupid engineering.

 

The re-engagement aspect of setting the cc at current speed from Coasting, doesn't exist on the C7, cc functions. Resume? Yes. But the problem there is then figuring out your speed and which gear you're in. It's geared, if you will, for automatic transmission usage, not manual transmission C7s. If you can't comprehend how the single button cc of the C3s, was far superior to the C7's 5 function buttons, keep trying!

 

It's not stupid engineering at all, you're just too stupid to figure out how to use it.

 

Show us your proof that it's superior then? You sound rather stupid making claims about engineering or ergonomics.

 

Every time you post you just prove how stupid you are...

 

Every time you make unsubstantiated claims you just prove how stupid you are.