[mumbogray]

Hey guys,

I found mold in the trunk liner of my Cruze in the last week. It's a gen2 2017 premier RS.

Is this definitely a water leak? I think there was a TSB for water leaking through the break light housing for the 2016s. Others in the following thread mentioned the RS spoiler is drilled into the trunk, and this could be the point of a bad seal. I thought it was glued? https://www.cruzetalk.com/forum/369...4434-lemon-cruze-gen-2-water-leaks-trunk.html. I haven't actually seen water in the trunk, just the mold.

I had a service appointment today, but they left a message to call and reschedule. Any recommendations for dealing with the mold? If I can fix the liner to look like 80% as good as it used to, I would be happy enough to not replace it. I haven't taken the liner off yet to look under. I didn't want to mess with it before the dealer took a look, if it is leaking water.

 

[mumbogray]

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.

 

[mumbogray]

I found the mold on Wed 6/12. I last used the trunk 4 days earlier on 6/8, and everything looked normal then. The brake light assembly was replaced on 4/22. I bought the car Jan 11th.

At the time the brake light assembly was replaced, I don't know if the proper steps to seal the piece were taken. I mentioned the TSB, but they stated my car didn't fall into that program.

When I visit the dealer this time, how should I go about asking them to perform the repair under the TSB? I saw the full details on gm.oemdtc.com, but the TSB is now removed due to a cease and desist. Any advice on where I should sign up to get a full list of TSB's for the Cruze?

 

[mumbogray]

Just to follow up as I finally got the full repair documents:

The tech stated the seal for both the left and right tail lamps was worn. They replaced the backup lamp assembly on both sides, Parts 84075816 and 84075815. They also replaced my liner 84114303 and gave me new clips 1605396.

Prior to replacing the CHMSL in April, and prior to my ownership of the car, the tech said the water leak recall was performed (any way to see if they installed the drain? for peace of mind). This is in line with above recommendations, as there was no water in the battery tub; only the wheel well. The recent CHMSL repair seems to be truly coincidence after all.