Front impact sensor - TerrainForum.net: GMC Terrain Forum
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post #1 of 13 (permalink) Old 10-30-2019, 09:46 PM Thread Starter
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Front impact sensor

The other day when I started our 2019 Terrain SLT without the adaptive cruise or front collision detection option- I saw what appeared to be the picture that comes up in vehicles with that option. There is also some kind of sensor In the front bumper.

Is this some kind of technology the car actually has even though we don’t have the option or was it just a glitch?
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post #2 of 13 (permalink) Old 10-30-2019, 11:19 PM
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Are you referring to the Vehicle Ahead Indicator? I don't know trims/packages include it, or if it's standard equipment. It will change colors as you approach the vehicle in front of you. The vehicle in front of you needs to be within 197 ft (60 m).
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2018 Terrain Denali, 2.0T, Blue Steel Metalic/Black
2013 ATS Premium, 3.6 V6, White Diamond Tri-coat/Brownstone
1967 Camaro, 327, Butternut Yellow/Black
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post #3 of 13 (permalink) Old 10-31-2019, 05:10 PM Thread Starter
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Yes that’s the indicator I saw. It doesn’t normally appear which makes me think that I might not have that option. But, I can see the sensor in the front bumper and it did pop up one time which makes me wonder if there is a way to activate that feature.
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post #4 of 13 (permalink) Old 10-31-2019, 05:20 PM
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On the 18 and up Terrains SLT, there were two packages that you had to get if you wanted the buzzing seat, the car ahead symbol and the lane keep alert, You also got the lane change alerts in the mirrors. These packages were called Driver Safety one and two, original I know (lol) but the mirrors get their info from the sensors in the rear of the car, and the front car alert gets theirs from both a camera behind the rearview mirror and a Lidar module behind the bumper. You should also have the little window that will flash red on the drivers side front window if you get too close to the car ahead. To activate them, you have to go into the Radio and find the settings for them. It sounds like yours is turned off. This option of the car ahead really comes in handy during a whiteout or fog, you really start to have a good idea of how close you are.
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post #5 of 13 (permalink) Old 10-31-2019, 06:06 PM
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Quote:
Originally Posted by Sd2ia View Post
But, I can see the sensor in the front bumper and it did pop up one time which makes me wonder if there is a way to activate that feature.
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Originally Posted by Urbansuburban View Post
This option of the car ahead really comes in handy during a whiteout or fog, you really start to have a good idea of how close you are.
Sd2ia, I would guess that since you see the indicator periodically that you have the approrpriate vehicle option package. I doubt that the indicator would illuminate without the package. Apparently you pretty much follow the vehicle in front of you at a safe distance.

Urbansuburban, there's also an option in the DIC to display the distance in seconds to the vehicle in front of you, with the appropriate vehicle option package. I don't know which package includes that feature since my '18 Terrain Denali has all of the packages so that I got all of the available safety features.
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2018 Terrain Denali, 2.0T, Blue Steel Metalic/Black
2013 ATS Premium, 3.6 V6, White Diamond Tri-coat/Brownstone
1967 Camaro, 327, Butternut Yellow/Black
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post #6 of 13 (permalink) Old 10-31-2019, 10:13 PM Thread Starter
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I’ll have to go through the settings. I don’t remember seeing anything but will look again. I’m sure it has the sensor unless there’s something else round that looks like a sensor on the front passenger side of the bumper.
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post #7 of 13 (permalink) Old 10-31-2019, 10:22 PM Thread Starter
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Wouldn’t this be some kind of sensor? I don’t see anything at all in the settings.
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post #8 of 13 (permalink) Old 11-01-2019, 08:51 AM
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if you are referring to the round item. That is the Hold down cover for when the vehicle was transported by train from Mexico. There is a fair sized eyebolt that goes in there which they remove when the pdi at the dealership. The Lidar box should be under the front cover on the drivers side. It would be the size of 4 packs of cigs laid out in a 4 square pattern. The way to find out if you have these items is to check your vehicles rpo codes which on a 19 they moved it to the bottom of the drivers door jamb and is a QR code. You should have a listing of the codes anyway, it always comes in handy. As you are in the States you can also have the dealership run your vin for a printout of what you have. We don't have that ability in Canada.
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post #9 of 13 (permalink) Old 11-01-2019, 08:55 AM
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Originally Posted by jerrymander View Post
Sd2ia, I would guess that since you see the indicator periodically that you have the approrpriate vehicle option package. I doubt that the indicator would illuminate without the package. Apparently you pretty much follow the vehicle in front of you at a safe distance.

Urbansuburban, there's also an option in the DIC to display the distance in seconds to the vehicle in front of you, with the appropriate vehicle option package. I don't know which package includes that feature since my '18 Terrain Denali has all of the packages so that I got all of the available safety features.
Jerry, that option is the follow behind, it allows you set the distance in seconds the following distance, it is used with both the car symbol, the green, amber and then red and the adaptive cruise if available. You don't need the Ad cruise for this to work. It only changes the time for the vehicle to turn amber then red. You should also have a little rectangle up on top of your dash that will flash 5 Red Leds if you get too close, a basic version of HUD for this one item only.
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post #10 of 13 (permalink) Old 11-01-2019, 06:46 PM
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Jerry, that option is the follow behind, it allows you set the distance in seconds the following distance, it is used with both the car symbol, the green, amber and then red and the adaptive cruise if available. You don't need the Ad cruise for this to work. It only changes the time for the vehicle to turn amber then red. You should also have a little rectangle up on top of your dash that will flash 5 Red Leds if you get too close, a basic version of HUD for this one item only.
Yep, I knew all of that. I was just attempting to point out another feature that could be used when travelling in a white out or fog.

I'm quite familiar with HUD. My wife has a much more functional version on her Cadillac ATS and on her previous ride - '98 Pontiac Grand Prix GTP. In my "prior life" (currently retired) I worked at a now defunct defense contractor that for a while was owned by GM, and a good friend of mine there worked with GM to port the defense version of HUD that he had worked on to something appropriate for a consumer vehicle. I often wish that they had kept some form of "missle lock" to be able to jettison the idiot driver in front of me.

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2013 ATS Premium, 3.6 V6, White Diamond Tri-coat/Brownstone
1967 Camaro, 327, Butternut Yellow/Black
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