Exterior Sources:
* Sunroof Drain Clogs: Check the sunroof drains (usually located at the four corners of the sunroof opening). These can become clogged with leaves, debris, or even just sealant buildup, causing water to overflow into the vehicle. Use compressed air or a small flexible wire to clear them.
* Windshield Seal Leaks: Inspect the windshield seal for cracks or gaps. Water can seep in through a compromised seal, especially during heavy rain or car washes.
* Door Seals: Check the weatherstripping around all doors. Worn or damaged seals can allow water to enter.
* Window Seals: Similar to door seals, inspect the seals around all windows, including the rear hatch or tailgate.
* A/C Condensation Drain: The A/C system produces condensation. If the drain line is clogged, water can overflow and collect on the floor. This is often located behind the glove box or under the dashboard.
Interior Sources:
* Leaking Heater Core: A failing heater core can leak coolant, which will be sweet-smelling and may look like water initially. This is a more serious problem requiring professional attention.
* Clogged Drain Pan: Similar to the A/C condensation drain, but a more general pan under the vehicle that can overflow.
* Roof Rack Drain: If you have a roof rack, check if there are any drainage holes that are clogged.
Troubleshooting Steps:
1. Identify the Location: Pinpoint exactly where the water is pooling on the floorboard (driver's side, passenger's side, front, back). This will help narrow down the potential sources.
2. Visual Inspection: Carefully examine the interior and exterior of the vehicle, focusing on areas that could allow water entry.
3. Water Test: If possible, use a hose to gently simulate rainfall, focusing on suspected leak areas. Have someone inside the vehicle to watch for water entry.
4. Check the Carpeting: Remove the affected carpeting (if safe and possible) to assess the extent of the water damage and potentially locate the source.
If you can't find the source yourself:
Take your Chevy Venture to a mechanic. They have the expertise and tools to diagnose and repair more complex leaks. A simple leak may be inexpensive to fix, while ignoring a more serious problem could lead to significant damage and costly repairs.
