|Condition||On certain 2016-2017 model year Chevrolet Cruze vehicles, the center high mount stop lamp (CHMSL) fasteners may back off over time and cause a water leak, allowing water to flow into the rear compartment battery tub. When the battery tub fills with water to a height of 50mm or more, the DC/DC converter module board and connector are exposed to water which may cause corrosion. If water drains below the DC/DC converter, a resistive short may occur on the printed circuit board which could result in an unattended fire when the DC/DC converter is powered.|
|Correction||Dealers are to inspect for water damage in the battery tub electrical components, and replace the CHSML gaskets and nuts (adding Loctite to the nut).|
Thank you. I wasn't expecting that the mold on the trunk hood liner would be caused by water in the battery compartment... but I took a look after work, and there is indeed a pool of water! I noticed it in the wheel well. My battery seemed dry; I couldn't find any water in that well. I have a weathertek trunk liner, so maybe that diverted it.
It is a red flag that you mention the CHMSL. I had a crack in mine, posted pics in a different thread. It was replaced only a few weeks ago. The dealer charged me for the repair out of warranty. I contacted Chevy Care and tried to get it replaced under warranty for Bulletin No. 16-NA-308. At the time I told them I was worried about water leaking, but I did not ask them to check the trunk, and I don't know if they did.
I can't say for sure if the water started accumulating before or after the service, as I only recently noticed because of the mold.
Should I contact the same dealer that replaced the CHMSL and ask them to fix this? I was hoping to visit a different dealer, but I don't want to have to pay for this again.