Adaptive Cruise slams on brakes randomly

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RST Dana

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it's on the wifes 16 and she was just telling me the other day that it put on the brakes for no reason at all and did something else wierd.....
i told her to just turn it off, when i was test driving it before we bought it I tried to make it do a lane correction it only worked once, i guess the road conditions have to be just perfect for it work.
part of it I think is that technology doesn't like how I drive, I drive how I drive and it just goes wtf... lol alert, alert, tone, alert, seat buzz pffht **** that
You can turn lane correction on/off. Crossing the lanes while on without using your signal will flag an alert. Alert type can be audio/visual or AV plus seat vibration, your choice.
 

Doubeleive

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You can turn lane correction on/off. Crossing the lanes while on without using your signal will flag an alert. Alert type can be audio/visual or AV plus seat vibration, your choice.
that's why I say this technology and me do not get along, I do not comform and it's glitchy there is no reason for it to slam on the brakes when there is no one around nor for it to do any other wierd shit. It's bad enough if I drive over a bump and the stupid traction control kicks in for a second and cripples your throttle, that can be dangerous.
 

tagexpcom

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I also cannot stand the lane centering features and I turn those off. When I have used it, it feels like a constant wrestling match with the vehicle. It does not do well when there are lane shifts, construction, or anything "unusual" that we humans deal with all the time.

I do admire the technology and do not mind experimenting with it, but I have to be able to turn it off.
Yea, I've noticed this when passing on a 2 lane road - feels like the wheel is fighting me as I cross lanes. Haven't figured out how to turn this off - tried a couple of things but it's still fighting me.

And that 'going to hit something' (car or person) rapid flashing goes off too much - such as when someone turns into a lane going the opposite direction and some other edge cases where there's potential (car is close) but really it's just a common traffic occurrence and no cause for alarm.
 

EGTroup

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Have 2023 Yukon Denali w SuperCruise. I find that in heavy traffic with cars merging and changing lanes both adaptive cruise control and super cruise often act late and reactively. They cannot anticipate very well and tend to overreact.

The semi-automatic lane change works ok in light traffic but automatic lane changes in traffic are scary.

I get the auto BRAKE warnings sometimes but no actual breaking on the highway. However, I have had the brakes slam on while parking due to a branch or nearby pedestrian. The hitch can completely prevent the car backing up unless you turn on the “hitch installed”
setting.
 

tagexpcom

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2021 Yukon, 6.2L - Just got back from a 3,000 mile trip towing 5,500lb trailer from Oregon to New Mexico thru A LOT of mountainous (non-flat) travel. Used 'tow mode'.

I find that adaptive cruise control doesn't do very well to keep up with the set speed. I ran 1000s of miles at a 65mph - 70mph target speed setting but the slightest upgrade can see speed drop 5mph or more below the set speed when clearly (using manual foot pedal) I can cause it to jump up a gear to regain/maintain speed. As I mentioned in post above, when vehicles pass / merge in front this also causes speed drop and on long hills - it will not regain the target speed for a loooooooooooong time. And regular cruise doesn't show in heads-up.

Me - I find this really annoying / not-the-best design choice of GMC software as it could more aggressively shift gears to maintain speed. I mean, what's the point of 10 speeds if not used? And I'm sure it annoys people following as I am annoyed when following a vehicle that slows 3, 4, 5, 7 mph going up a hill. But... maybe my expectations are too hi? as my 2004 Cadillac SRX exactly maintains to speed (even when towing same trailer) and I'm used to this.

Just curious what others think.

P.S. Love the rig - towed 3,000miles without breaking a sweat / no issues at all with power/performance/ride :)
 
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