Service Side Detection System - Page 3 - GMC Acadia Forum: AcadiaForum.net
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post #21 of 22 (permalink) Old Today, 02:44 PM
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Originally Posted by esatr View Post
2014 Acadia Denali - 60k miles

I have found that the side detection sensors are not sealed well and when located in the a harsh environment like the rear bumper, it caused other serious issues.

The service side detection warning had been popping up but I was not aware that the sensors corrode and then cause a short that disables the vehicle. This happened to my wife and kids one night at -10F. The car would not restart because of the sensor. (various low voltage warnings were popping up)

After setting overnight the car did restart at -10F and I drove it straight to the dealership. It took the dealership 3 visits to hopefully fix the issue. (They replaced my battery first - which obviously wasn't the issue.)

They showed me one of the sensors after replacement - It circuit board was white, covered with corrosion. I couldn't believe that GM engineers would put a component like this on the vehicles, or that they wouldn't be replacing all of them with a better sealed unit and that I wouldn't need to pay $1000 for replacements. (which I most likely will need to do again in a year or two)
Not difficult to replace and can be bought for a couple hundred bucks. If your originals lasted 5 years, why wouldn't you anticipate the same life for the replacements.
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post #22 of 22 (permalink) Old Today, 08:20 PM
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Join Date: Apr 2019
Location: North Dakota
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1. From the discussion it appears that others have had issues within a year or two.
2. Parts cost was about $700 for two sensors then labor to install
3. It took the dealership 3 tries to determine what was wrong, and that the sensors were the cause of the various low voltage warnings
4. I was very disappointed thinking that a cheaply made sensor could fail and disable the vehicle. Seems like this could have been done better. Either better components or the electrical system protected from this. I'm thankful that things didn't turn out worse when this happened at 10 below.
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