I'd guess the C8 has this recent "feature" where every time you stop in traffic the engine shuts off and starts again as soon as you press the accelerator. If so, is there an easy way to disable this feature? Will certain driving modes disable it, is it disabled with the air conditioning on, etc?

As far as I know, all automobile electric starter motors are brushed motors. Every engine start cycle wears a tiny bit of the brushes down. This start/stop function must greatly speed up brush wear and ultimate starter motor failure. I'd think the labor charge of replacing a starter motor will easily undo all of the gasoline savings from the pre-starter failure days. From a previous post, I've learned how to override the 8-4 cylinder switch feature for my 2000 mile trip back from the museum. Thanks.

 

No C8's don have it yet.
That's the fear I had with my wife's SUV, and sure enough her starter went out just under 10,000 miles. Was covered under warranty, however would have cost about $850 if it had not still been under warranty.

 

The word on the street is the 2024 will have it. . . at least some of them

 

When it's available your owner's manual will have instructions for disabling it. You can read other owner's manuals to see how Chevrolet does it in other models such as the Silverado 1500

 

The 2024 E-Ray will have start-stop. We don't yet know if the Stingray or Z06 will.

But cars with start-stop typically have large, heavier duty starter motors to deal with the additional usage and wear, and more powerful batteries to match. I've not heard or seen anything to indicate cars with start-stop are having significant numbers of starter failures. GM and other manufacturers do significant failure mode testing on components like this. The starter going into a Corvette with start stop has probably been tested the equivalent of 20 - 50 years of normal use.

 

Our Cadillac SUV has it, there is just one more button to hit after releasing the parking brake. I hope it is just limited to the ERay for 2024. It looks like I missed the March allocation cycle, so I may be getting a 2024 Stingray

 

Thank the Lord that the current C8s do NOT have this.....it is the stupidest thing to ever be added to a car.

 

BTW, "Start-Stop" is not installed in your car to save YOU any money on fuel. It exists only to improve corporate fuel averages as required by federal regulation. That is why the button on your dash only defeats it when pushed with each new start-up. You can't "set" the car to fire up without the "feature" engaging.

Having said that, there are some aftermarket solutions out there. I purchased a device online that enables me to start up my wife's Equinox without the Start-Stop being activated...

 

read somewhere stingray will have it and will be switch disable same as e-ray, a/c operation will disable, and only guessing M mode

 

You won’t get an argument out of me that it’s a stupid feature and saves very little gas. I have it on two of my GM vehicles. I’ve gotten so used to the engine stopping and starting that I rarely ever disable the feature.

 

me too, I have it in my telluride for 4 years and I’m used to it

 

My 22 GMC Sierra has Autostop/start and I hate it. Yes you can manually turn it off, but it comes back on each time the ignition is cycled.

I bought the Autostop eliminator and never have to deal with it again.
https://www.autostopeliminator.com/?...0aAvGoEALw_wcB

Hopefully if it is added to the Stingray or Z06 they will make one for them as well.

Side note: Fortunately, in an effort to reduce chip usage, AFM or a sunroof wasn’t put in my truck, so it is exactly the way I want it now.

 

Abhor auto start/stop. Part of the reason I got rid of my 2020 Defender before the lease was up. Well, that and the fact that I had $22,000 in equity in a lease.

 

I ++ enjoy the C8 NOT having this start/stop feature, since it's one I disable in all other vehicles I drive. I worry about more than just the starter, getting worn down by increased usage. There are other components activated when you start your vehicle again. That said, here's an article which is somewhat dated (about a year old) which suggests the engine wear and tear from constant start/stop; isn't all that bad. Up to you if you believe it but I remain in the "anti-start/stop camp":

​​​​​​https://bestride.com/research/buyers...ine-components

And here's a more recent (2023) article which says increased engine wear and tear from start/stop, is a myth and also tries to "guilt you" into worrying about the environment. It does mention people not wanting it when driving a sport car:

​​​​​​https://mechanicbase.com/electric/do...ne-components/

 

I've had a few different vehicles not "start" back up at a stop light when I'd hit the gas. Very annoying feature.

 

I ordered my f150 with a “delete option” for stop start. $60 discount and I never have to deal with that nonsense. Gm should get on board with that.

 

Yes. The EPA City Driving MPG rating is determined by a driving sequences of cruise at city speeds, slow down, speed up, and stop, all to represent a city driving usage pattern. In this scenario, total times spent at "stop" add up to 20 minutes. So if the manufacturer adds the auto stop/start feature to the city driving scenario, there's an improvement in the City Driving MPG.

OK, so if the car is out of warranty and the starter motor wears out, you've got to replace it on your own dime. A few hundred dollars for a starter motor, a $850 price quoted in a post here is one thing. There's labor. The labor to replace the starter motor in the tight engine compartment spaces of today's cars can be pretty big. Example: To replace the starter motor in a Cadillac Northstar engine, you have to remove the intake manifold! The starter motor is under the manifold inside the engine. Starter motors used to be pretty easy to replace, maybe the exhaust pipes were a hassle.

 

Where?

 

First so far only the 2024 E-Ray is said to have Stop/Start Logical as ~10% of the energy in gasoline is wasted idling! It also has a Lithium-Ion instead of a lead-acid battery for the starter, lights, Bose 14 speakers etc. Perhaps in addition to weight savings it's to deal with the additional starts. Far better than being FORCED to only have EV Vettes (that is coming!)

BUT there are other ways to start a car than a starter! I'll explain.

• My wife is on her 3rd BMW X5 SUV. All 3 have had Stop/Start and it's so unobtrusive we never tun it off. If I put the car in Sport it does cancel BUT why should I, it's done very well. And Sport in an SUV is not like driving my C8!
• It doesn't wait for my foot to touch the gas pedal! As soon as it is off the brake the car starts. It's started BEFORE my foot gets to the gas pedal.
• We seldom even hear the starter motor. How can that be?
  • Well some companies are stopping the engine just after TDC right after combustion occurred. That keeps the combustion pressure in the cylinder.
  • When they command start that pressure turns the engine over and may need little starter power. BTW in WWII could start an 18 cylinder radial engine in the Corsair by firing a blank cartilage into one cylinder set just after TDC!
  • You may not be aware but theC8 LT2 engine when it shuts off 4 cylinders closes the valves in each to maintain combustion pressure in those 4 cylinders! Yep those GM engineers are smart give them credit for doing Stop/Start well.

You asked about AC. In our BMW's on 95 degree days (in NE SC we have many) when stopped for a red light the engine stops and the interior AC fan keeps running. There is enough super cool evaporator rad to keep close to the preset temp until the the engine starts again. If it can't the engine will start. I recall at some outside temp it does not stop. This is not rocket science!

Now engineers can use other than standard starter motors. Below is a pic of the GM ZZ502 8.2 Liter high compression engine in my street rod. They know folks (as I did) use long tube headers that hug the engine, close to the starter. In fact mine are so close I installed insulated blanket around the starter motor sold for the purpose. It uses a small diameter starter motor How do they get enough torque to start that high compression 502 cid engine? By having a 5:1 gear ratio compared to no gear on a standard starter motor. More money but no issue turning over that BB when it's hot!

Pic of opposite side of 8,2 Liter GM Crate Motor than where the starter motor is located. The long tube headers fit close to the block and are close to the starter motor. Starter motor a small diameter and uses a 5:1 gear ratio to increase torque.

 

Probably written by greeny climate alarmists....
The start stop thing is retarded. Very glad we don't have it.