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Automatic Parking Brake?

SteveCZ
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SteveCZ Enthusiast

SteveCZ

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So I was washing the truck in the garage today, and I heard a noise come from either the gas tank area or the rear driver side wheel.  My fob was in my jacket on the steps, far away from me.  I get in the truck to leave, and notice the parking brake was on, from the red idiot light.   So at least I know what the noise was.   Is there some sensor that if the truck rocks one way or the other too much it will put the brake on????

 

edit:   Forgot truck type.  2020 GMC AT4 5.3 10 speed 

Edited by SteveCZ
econometrics Senior Enthusiast

econometrics

Posted
Posted

It will engage the park brake on an incline automatically. But sometimes it does it randomly as a system process. Mine hasn’t done that very often, but I use mine every night as I park on an incline at home. 

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Booger T Enthusiast

Booger T

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Posted

Mine does this as well. Don't understand what is so annoying about it as it will automatically disengage when put in drive and you start moving

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SteveCZ Enthusiast

SteveCZ

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When I put mine in reverse, it didn’t disengage.  I had to turn it off manually, even though I didn’t engage it.   For someone not paying attention and just throwing it in reverse, would be in for a surprise.  

Thomcat Senior Enthusiast

Thomcat

Posted
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8 hours ago, econometrics said:

It will engage the park brake on an incline automatically. But sometimes it does it randomly as a system process. Mine hasn’t done that very often, but I use mine every night as I park on an incline at home. 

Same here. I always use it as a precaution whether on an incline or not to save falling back on the parking pawl in the tranny. Likely why I've never had it autorun through an exercise cycle to keep the mechanism functional.

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oldmann Senior Enthusiast

oldmann

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I love it when hooking up a trailer.  It deploys automatically and the truck does't rock back and forth when putting it in park requiring moving the truck again.  

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mandrewbot3k Enthusiast

mandrewbot3k

Posted
Posted
So I was washing the truck in the garage today, and I heard a noise come from either the gas tank area or the rear driver side wheel.  My fob was in my jacket on the steps, far away from me.  I get in the truck to leave, and notice the parking brake was on, from the red idiot light.   So at least I know what the noise was.   Is there some sensor that if the truck rocks one way or the other too much it will put the brake on????
 
edit:   Forgot truck type.  2020 GMC AT4 5.3 10 speed 

Are you sure it’s not the fuel pump priming? If you get close to the truck with the key I’ve noticed it kicks on. I always have my parking brake set and it makes that sound.


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SteveCZ Enthusiast

SteveCZ

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1 hour ago, mandrewbot3k said:


Are you sure it’s not the fuel pump priming? If you get close to the truck with the key I’ve noticed it kicks on. I always have my parking brake set and it makes that sound.


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Nope.  I never set the parking brake in the garage.  Got in the truck and the parking brake was set.  Different sound than fuel pump.  

econometrics Senior Enthusiast

econometrics

Posted
Posted
1 hour ago, SteveCZ said:

Nope.  I never set the parking brake in the garage.  Got in the truck and the parking brake was set.  Different sound than fuel pump.  

They do make similar noises. I can attest to that. 

OnTheReel Senior Enthusiast

OnTheReel

Posted
Posted

I‘ve had it not release itself after it applied automatically, but only once in just under a year. Probably just a glitch, I wouldn’t worry about it unless it made it a habit. 

johnnys2k Enthusiast

johnnys2k

Posted
Posted

it will do it randomly to make sure it's working properly and keep the mechanism moving... just a safety feature, and a nice one honestly. 

Moend Enthusiast

Moend

Posted
Posted

Also it will unlock automatically. Just put it in gear and go. It will unlock if it detect throttle command while in gear. I like using parking brake. Just don't like the button because some times I don't know if I successfully pushed it or not unless I look at the gauge. And looking at the gauge for parking brake is a thing I am not used to.

RaisedByWolves Enthusiast

RaisedByWolves

Posted
Posted
On 12/9/2019 at 5:49 AM, SteveCZ said:

When I put mine in reverse, it didn’t disengage.  I had to turn it off manually, even though I didn’t engage it.   For someone not paying attention and just throwing it in reverse, would be in for a surprise.  

It will disengage when you give it a bit of pedal.

 

It can cause the truck to lurch a bit so be careful.

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