[xmrnicholas]

I just purchased my TB and I’m one of the rare people who like the auto stop feature. But I noticed sometimes when it activates and turns off - it randomly starts the engine again with in like a minute even with my foot still on the brake. I’m new to this tech. Can someone explain why it would just randomly start up with my foot never leaving the break?

thank you

 

[RandyB]

If a vehicle system requires the engine to run, the auto stop is aborted. For example: a hot day, AC is on, cabin is warm and needs cooling. The engine is not stopped because that would stop the AC compressor that is driven by the engine. The result if the engine is stopped is warming of the cabin instead of cooling. Brakes.

 

[85S10/21TBRS]

If a vehicle system requires the engine to run, the auto stop is aborted. For example: a hot day, AC is on, cabin is warm and needs cooling. The engine is not stopped because that would stop the AC compressor that is driven by the engine. The result if the engine is stopped is warming of the cabin instead of cooling. Brakes.

Appreciate the explanation also. I live in South Florida and have had a similar experience when I have forgotten to turn
the auto stop off. I do not like the auto stop....not used to that feature and startles me like the engine stalled. It is
too noticeable with that 3 banger. I also wish the default was "off" not "on".

 

[xmrnicholas]

Thanks for the reply! Is the auto stop feature even good for the engine? Lol especially in stop and go traffic?

 

[ZR2LIFE]

I don't like it for many reasons. Accelerated wear on the starter, unnecessary load on the electrical system (when the engine is off the electrical system relies completely on battery power since the alternator isn't charging), reduced battery life due to sudden loads placed on the battery, and most importantly it's just annoying, lol.

Steve

 

[brownactive]

I hate it. I am in the habit to turn it off the moment I am in the TB.

 

[Butch]

My 2021 TB doesnt run at all after engine turns off at a red light.I have been towed back to the dealer three times already and they don't know how to fix it. So now I'm stuck with no means of transportation because the dealer won't give a loaner,now what?

 

[brownactive]

Can you hit the button to turn OFF the shut off car function that stops this activity? I am surprised the dealer does not give you a loaner unless maybe you have high miles on it now and they won't give you a car.

 

[ZR2LIFE]

My 2021 TB doesnt run at all after engine turns off at a red light.I have been towed back to the dealer three times already and they don't know how to fix it. So now I'm stuck with no means of transportation because the dealer won't give a loaner,now what?

You have a warranty and GM is responsible to get you a loaner or rental vehicle while repairs are being made. If your dealership isn't helping you then go above them and call GM customer service and let them know what's going on.

 

[Rontroon]

Can you hit the button to turn OFF the shut off car function that stops this activity? I am surprised the dealer does not give you a loaner unless maybe you have high miles on it now and they won't give you a car.

only had 800 miles first time in AZ
Drove to Michigan and it’s happened twice more
no loaner. I’m now afraid to drive too far from home

 

[brownactive]

How many miles are on this TB? How old? Months?

 

[Rontroon]

How many miles are on this TB? How old? Months?

3400 miles one month old

 

[brownactive]

Damn and they won't give you a loaner. I'd be calling GM!!!

 

[Rontroon]

Damn and they won't give you a loaner. I'd be calling GM!!!

I’m filing aGM report for reimbursement

 

[Briz]

Damn this sounds pretty bad hopefully warranty can resolve the issue they should replace a few parts seems to be a lemon maybe if not just the starter or CVT.