How to Deal with Water Accumulation in the Buick Excelle Trunk?

[FelixMarie]

You can clean the seal ring with wet cotton. If the car is to be parked for a long time, perform a thorough cleaning before parking to avoid natural aging during storage. The first thing we need to do is to drain the water completely. Simply remove the plunger at the bottom of the trunk. Check if the rubber seal is damaged. Conduct a watertight test or a light transmission test, and mark the spots with a marker. Buy a bottle of glass glue, get into the trunk, and seal the identified leakage points with the glue. For most aging rubber seals, we need to go to a 4S store for replacement.

[LeilaniLee]

My Excelle's trunk also had water accumulation before, which was particularly frustrating. After a heavy rain, I found the mat completely soaked. I quickly took out the spare tire and poured out two large basins of water! It took several days to dry. Later, upon closer inspection, I discovered that the sealing strip on the trunk lid had aged and deformed, allowing rainwater to pour directly through the gaps. However, don’t rush to replace the strip. I recommend checking three areas first: whether there are cracks at the tail light mounting points, if the bumper seams have come unglued, and if the drainage holes at the bottom of the spare tire well are clogged with mud. If the strip is damaged, replacing it yourself is simple—just buy a new one online for a few dozen yuan and slowly press it into the groove. Remember to test it by pouring some water afterward to be sure.

[OMason]

I've encountered this situation several times. When repairing a car, if the Buick Excelle's trunk is leaking, nine times out of ten it's due to issues with the rear sheet metal seams. For example, inadequate repairs after a rear-end collision or the high temperature from the exhaust pipe cracking the adhesive on the rear panel. The simplest solution is to seal all the seams with silicone sealant, but this is only a temporary fix and doesn't address the root cause. The key is to remove the interior trim and check if the car body has any deformations or rust holes. Also, don't forget to inspect the drainage channel at the lower edge of the rear windshield. One customer had leaves blocking the channel, causing rainwater to flow backward into the trunk. Prepare a large syringe to suck out the water, then use a hairdryer to blow dry for half an hour. Otherwise, mold can grow and make the entire trunk smell.

[LeSophie]

This is a common issue often discussed in our car enthusiasts group. Some experience water leakage because the wiring for the modified reverse camera pushed the rubber seal out of place, while others found water ingress after reassembling the taillights without tightening the bolts properly. Just last week, my colleague's car had the same problem—measuring about 5 cm of standing water! During the repair, he discovered that the filled areas inside the rear fender had bubbled and cracked, necessitating a complete panel beating and repaint. As a temporary fix, you can poke open the drain plug to release the water, but don't leave it untreated for long, or the spare tire well might rust through, requiring expensive steel plate welding. Also, a quick reminder: apply some grease to the spare tire bolts, as they're prone to rusting severely after being soaked in water.

[StGenesis]

It's recommended to first use a towel to absorb the water, then lift the spare tire cover and carefully inspect the trunk lining. Most leakage points are at the tail light mounting positions—check if the sealing sponge has collapsed. Additionally, cracks in the adhesive layer at the rear panel welding points are quite common; this requires a repair shop to reapply structural adhesive. For a permanent fix, it's best to empty the trunk and conduct a water spray test, using a hose to slowly spray water to accurately locate the leak. After treatment, remember to spray some mold remover on the interior, especially in the corners of the spare tire well where mold tends to hide. A friend's car had standing water for three months without treatment, and eventually, the spare tire mounting bracket rusted and broke.

[StAngelina]

My old Buick Excelle had the same issue before, and it turned out to be caused by the deformation and displacement of the rubber plugs in the chassis exhaust holes. Have you ever heard a water sloshing sound when opening the car door after rain? That's a clear sign. Besides the rubber plug problem, it's also common for water to seep in due to broken clips on the rear bumper. As a temporary fix, you can remove the rubber drainage plugs, but leaving them off for a long time can let dust in. If the spare tire has already rusted, remember to remove the rust and spray a layer of chassis armor. A special reminder: check around the trunk lock mechanism, as gaps there tend to hold water. It's best to clean it regularly to prevent electrical shorts.