So I detailed the trunk this weekend and when I lifted the spare tire, there was about an inch of water inside. Odd thing is, the trunk carpet or items inside are not wet. Any insight to this??


Sent from my iPhone using Tapatalk

What year is your Impala?
There are earlier threads on this problem. Generally have been a bad rear taillight gasket in early model years. Or maybe trunk weatherstrip. Or if you have a sunroof, possible problem with drain hoses..good luck

Here you go: https://gm.oemdtc.com/5418/14047-wat...evrolet-impala

I own a 2014 Impala 2LTZ - purchased new. The taillight gaskets were replaced before we took delivery of the car. An example of poor quality by GM in a new car that caused a lot of damage and frustration for owners.

Link doesn’t work


Sent from my iPhone using Tapatalk

2014. Ltz


Sent from my iPhone using Tapatalk

The link worked a moment ago - but loaded slow.

Here is the link again: https://gm.oemdtc.com/5418/14047-wat...evrolet-impala

When you change the tail light gaskets, you must partially remove the rear bumper cover (fascia). You remove fasteners at the rear of the rear wheel well openings (where the fascia is attached), then gently pull the cover away from below the quarter panels and tail lights. There are “push” tabs at the quarter-panel seams, and just below the tail lights that fit into moulded openings. The fascia tabs are about 1 - 1 1/2 inches wide.

Then, remove the taillight fasteners and remove the tail lights. The lamp assemblies must be placed faced down on a bench with a towel to change the gaskets, which have self-advisive backings.

Then, replace the lamp assemblies - and gently push-in the tabs for the fascia and replace the fasteners inside the wheel well.

Here’s a link to the GM TSB with color photographs: https://static.nhtsa.gov/odi/tsbs/20...92869-0335.pdf

I had this issue in my 2016 ltz. After taking them off it was obvious from the dirt on one of them it was the cause. Replaced both, completely dry since. I think mine had only just started recently leaking,or maybe leaked a bit from the car wash. Hardest part was not really having the proper tool to take out the torx screws on the bumper, not much room.

I used that service doc and a couple of videos

bumper

leak

and a note from another thread:

"The improved parts are 23211647 LH and 23211648 RH - I think they are special order and cost less then $10 each.

If your parts dept looks up the part by car and year it still lists the original parts 23453698 and 99"

23211647 SEAL, RR BODY STRUCTURE STOP LP (LH) 1
23211648 SEAL, RR BODY STRUCTURE STOP LP (RH) 1

Very common as said above taillight gaskets

Thank you all. Just ordered both of them.


Sent from my iPhone using Tapatalk

Thank you all. Just ordered both of them.


Sent from my iPhone using Tapatalk

You are not alone....I purchased my 2014 Impala LT January 5, 2018 and left for Florida in a snowstorm the next day. When we arrived in Florida 5 days late and opened the trunk (for the first time since we left NY) not only was the floor of the trunk wet but the spare tire well was half full of water. To make a long story short the right tail light was replaced (after waiting a week for a complete taillight unit). I left the trunk open in the sun for the week, finally dry, no more leaks....yea...

Thank you! There certainly is a big difference with the improved gaskets. Pretty easy job. First one took about 25 minutes. The second only 15.





Sent from my iPhone using Tapatalk

Holy crap that is a huge difference!

How hard was it to unsnap and then snap the bumper back together?