2018 Denali Lane Departure Warning and Front Parking Assist

[Doubeleive]

Hmmm, interesting. Dealer told me I couldn’t but I’ll have to try it. ACC is horrific.

it only works on certain vehicles, which is why it say''s (if equipped)

 

[CMoore711]

OP needs to find a different dealer.

I have lane departure assist turned off, but front collision with alert with no brakes applied is how I have that set, that's about the least invasive as you can have it set to. It would vibrate the seat and flash red on the HUD whenever it would detect a vehicle in front of me that say was slowing down say for a left hand turn and not all the way in the left hand turn lane. Then the vibration went away and it started beeping at me would display a "service front end collision detection system" (maybe not exact text?) message on the DIC. Mentioned it to my dealer on the my next oil change, they looked into it and found a faulty sensor in the drivers seat that went bad. Actually said it was common that this particular sensor went out on a few vehicles (GMC, Buick, Cadillac dealership). Dealer replaced the sensor and all is back to normal.

 

[cardude2000]

it only works on certain vehicles, which is why it say''s (if equipped)

If equipped with an additional option to turn it off lol? Weird option!

 

[Doubeleive]

If equipped with an additional option to turn it off lol? Weird option!

it's came up in discussion before that some years had the option and some did not, may have something to do with the trim level or optional packages ordered, not really sure.

 

[BlaineBug]

Can anyone confirm if my system is operating correctly? I have a 2019 GMC Yukon SLT with lane keep assist as part of the build sheet data. In my opinion, the lane keep assist works very well. The lane keep assist icon will change from GREEN to AMBER and then the electric steering will attempt to correct me. It is very accurate and does a good job.

However, if I don't signal and the vehicle does move out of the lane, nothing happens. The icon doesn't flash at all and just turns off completely as if it is no longer detecting any lane markings. In the two months I have owned the vehicle I have never experienced a lane departure warning of any kind. I have my alerts set to AUDIBLE so I should be hearing a beep rather than a seat vibration.

However I am getting proper beeping for the front and rear parking sensors. But, I don't get any beeping for the blind spot alert. The symbol in the mirror will flash but I do not get any audible alert for that either.

I'm trying to determine if everything is functioning as intended or not. From my searching there is no sound answer as it seems vehicle owners have a lot of varying things to say about lane keep assist/lane departure warning.

 

[sealandsky]

My vehicle is 13 months old and I just turned over 10k miles. About a week ago I developed a change in my Lane Departure Warning and my Front Parking Assist. I use to get a vibrating seat as soon as the icon for either of these changed in the drivers display. Now the icons change but no vibration or beep (selectble in vehicle settings in the Infotainment Center.) I do get a vibration when the rear sensors detect something.

I had the vehicle at the dealer today and they contacted GMC. The answer they gave me is that the vehicle is behaving as designed!! I can't believe this, since for 13 months it would vibrate immediately when the lane departure icon changed from green to amber.

Having and icon change color is not much of a warning! A vibration or beep is needed and it use to be there.

How is the system working in your vehicle??

I get the vibration in the seat. A dealers favorite thing to say is "everything is working as it should".

 

[GTNator]

Can anyone confirm if my system is operating correctly? I have a 2019 GMC Yukon SLT with lane keep assist as part of the build sheet data. In my opinion, the lane keep assist works very well. The lane keep assist icon will change from GREEN to AMBER and then the electric steering will attempt to correct me. It is very accurate and does a good job.

However, if I don't signal and the vehicle does move out of the lane, nothing happens. The icon doesn't flash at all and just turns off completely as if it is no longer detecting any lane markings. In the two months I have owned the vehicle I have never experienced a lane departure warning of any kind. I have my alerts set to AUDIBLE so I should be hearing a beep rather than a seat vibration.

However I am getting proper beeping for the front and rear parking sensors. But, I don't get any beeping for the blind spot alert. The symbol in the mirror will flash but I do not get any audible alert for that either.

I'm trying to determine if everything is functioning as intended or not. From my searching there is no sound answer as it seems vehicle owners have a lot of varying things to say about lane keep assist/lane departure warning.

I’m trying to understand your questions. In paragraph 1 you state lane keep assist works, and the way you describe it is the way mine works.

Paragraph 2 you state if you do NOT signal? Isn’t that the same use case as paragraph 1? Because if you do signal then lane keep assist is disabled.

Paragraph 3: that functions as designed. I don’t get any audible warning from blind spot warnings. It’s all visual.


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[BlaineBug]

How about for lane departure warning? Are you able to force an alert by crossing lane markings without signaling?

 

[cardude2000]

I’m trying to understand your questions. In paragraph 1 you state lane keep assist works, and the way you describe it is the way mine works.

Paragraph 2 you state if you do NOT signal? Isn’t that the same use case as paragraph 1? Because if you do signal then lane keep assist is disabled.

Paragraph 3: that functions as designed. I don’t get any audible warning from blind spot warnings. It’s all visual.


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Serious question. Does your Expedition lane departure work the same way? I wish my yukon would hold itself in a lane no matter how aggressive a turn. Curious what ford is doing.

 

[BlaineBug]

I read here that he has an Escalade not an Expedition.

 

[GTNator]

How about for lane departure warning? Are you able to force an alert by crossing lane markings without signaling?

I am. But I think there must be an algorithm in the software that controls it because it depends on travel speed and how forcefully I turn into another lane when not signaling. if the speed is highway speed, the alert is definitely there and the tug to keep me in the lane is strong. It’s actually helped me be more careful by always signaling lane changes, something I used to do 80% of the time but now it’s 100%. It’s a good system.


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[BlaineBug]

The other day I went on the highway to give it a test for about a half hour. I was able to get three "take steering" alerts by removing my hands from the steering wheel. However, I was only able to get one actual lane departure warning when merging. This resulted in the lane keep assist icon flashing on the dash.

I have tried to unintentionally drift into another lane without any input from my hands and generally, the electric steering will attempt to move you back over, but if you don't input and cross over the opposite lane marking, the green/amber lane keep assist icon will just turn off.

In my tests I only got it to alert me once even though I drove the exact same route back and forth twice. But like I said it doesn't matter, left or right, I feel as though the electronic steering's lane keep assist actually works pretty well and will nudge the steering in the appropriate direction when it detects you getting close to the left or right lane marking.

I suppose it's working fine, as is the crash avoidance icon which will always accurately show green even when the vehicle in front is far, and it will turn amber if you get too close. Both systems rely on the same camera.

 

[BlaineBug]

Since my 2019 Yukon has been in the shop again (I have my own thread for that) I have been in a 2020 GMC Terrain courtesy vehicle that has lane keep assist. It acts very similarly to my GMC Yukon so I would have to say that everything I described in regards to the Yukon's lane keep assist is normal. I haven't been able to get a peep out of the lane departure warning around town at least, but generally, if a lane is crossed without signaling, the system generally just turns off.

The only difference is that the 2020 GMC Terrain's lane keep icon is always illuminated "white" and then either turns green or amber depending on the status, where as in the Yukon, there is no "white" icon, but rather's it's totally off, green, or amber.