Adaptive Cruise Control problem

Cwoodall83 · February 18

22 Silverado ZR2. I have ACC, it works great when it works… traveling back from Tennessee tonight I started having issues with it. While traveling at 77mph the truck would randomly slam on the brakes, dropping to 50mph rather quickly… (wide open interstate) thought it was a fluke but happened a few more times. Cleaned camera same problem. I ended up having to disable and use standard cruise control…. It’s going to the dealership Monday.

Transient · February 18

Not enough information for us to start the typical internet debauchery of speculation galore of the most incredulous manner that amounts to terradiddle.

All joking aside, we need more info. What time of day?; which direction were you heading?; and what was the weather like? are all great examples of the info we need. Personally, I've had ACC fail in a rainstorm, but that was in a Honda CR-V. I've heard of others having ACC fail when the sun was setting and low in the sky because it messed with cameras. More info is needed. The dealership may end up saying something similar if they can't identify a problem.

Cwoodall83 · February 18

It was night time around 10 pm weather was clear and 42 degrees. Was traveling west on I20. There was no one in sight in either direction. I would just be moving along and bam the brakes would apply causing the truck to nose dive and locking the seatbelts. No warnings or collision alerts. Gap distance was set as low as possible. Truck is clean with windshield being clean as well. The road was in good condition without hills.

Cwoodall83 · February 18

It was night time around 10 pm weather was clear and 42 degrees. Was traveling west on I20. There was no one in sight in either direction. I would just be moving along and bam the brakes would apply causing the truck to nose dive and locking the seatbelts. No warnings or collision alerts. Gap distance was set as low as possible. Truck is clean with windshield being clean as well. The road was in good condition without hills.

jaxcam02 · February 21

I have had this happen to me occasionally, always at night, normally during cool to cold weather. My guess, based on something I saw on this site, is there was a build up of condensation on the windshield inside the little camera housing. It hasn't happened in a month or two so I haven't been able to pull over and see if it was condensation or not.

elcamino · February 21

Maybe a bird or some other object flew by? I have occasionally had this happen when someone was near the road such as coming out of a driveway too far. That's the drawback with all these electronic sensors and camera's, things cause anomalies that some times cannot be explained. Its not foolproof, it was designed by humans.

Edited February 21 by elcamino

newdude · February 21

On 2/18/2023 at 2:46 AM, Cwoodall83 said:

22 Silverado ZR2. I have ACC, it works great when it works… traveling back from Tennessee tonight I started having issues with it. While traveling at 77mph the truck would randomly slam on the brakes, dropping to 50mph rather quickly… (wide open interstate) thought it was a fluke but happened a few more times. Cleaned camera same problem. I ended up having to disable and use standard cruise control…. It’s going to the dealership Monday.

Its probably the camera.

The ACC camera is inside the plastic housing around the rearview mirror, so unless you took that apart, you didn't actually "clean the camera".

GMCustomerService · February 27

On 2/18/2023 at 2:46 AM, Cwoodall83 said:

22 Silverado ZR2. I have ACC, it works great when it works… traveling back from Tennessee tonight I started having issues with it. While traveling at 77mph the truck would randomly slam on the brakes, dropping to 50mph rather quickly… (wide open interstate) thought it was a fluke but happened a few more times. Cleaned camera same problem. I ended up having to disable and use standard cruise control…. It’s going to the dealership Monday.

This is certainly not what we like to hear, Cwoodall83. Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your 2022 Chevrolet Silverado ZR2. To do so, please send an email to [email protected] with ATTN: Cwoodall83/GM Trucks in the subject line.

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