Here's how to troubleshoot and correct the problem:
1. Locate the Drain:
* Access: This is the trickiest part. You'll likely need to access the drain from underneath the dashboard. This involves removing various trim pieces. Consult a repair manual specific to your 2002 Pontiac Aztek for detailed instructions on dashboard disassembly. These manuals usually show diagrams and steps to avoid damaging any parts.
* Visual Inspection: Once you have access, look for a small tube or opening at the bottom of the evaporator housing (the part where the cold air is produced). This is the drain.
2. Check for Clog:
* Look for Obstructions: The drain can become clogged with debris, leaves, or even mold and mildew. Use a small, flexible wire or a shop vacuum with a narrow attachment to try and clear any obstructions.
* Flush the Drain: After clearing out any visible debris, use a mixture of water and a mild cleaning solution (like diluted bleach) to flush the drain. Let the water drain naturally. Repeat this several times if necessary.
3. Inspect the Drain Hose (if applicable):
* Location: Some vehicles have a drain hose that runs from the evaporator to a drain hole outside the vehicle. Check for kinks, breaks, or blockages in this hose. If it's disconnected or damaged, repair or replace it.
4. Check the Evaporator Core:
* Possibility of leak: Though less likely to cause a large leak onto the floor, a leak in the evaporator core itself could contribute to excess moisture. This is a more significant repair involving replacing the core, requiring more significant disassembly of the dashboard. This is only likely if you also notice a sweet smell (from freon).
5. Other Potential Sources (less likely):
* Seal Failure Around the Windshield: If the seal around the windshield is damaged, water could be entering the vehicle and dripping onto the blower motor area. Inspect this carefully for any leaks.
* Sunroof Drain: If your Aztek has a sunroof, check its drains for clogs. Clogged sunroof drains can overflow into the cabin.
Important Considerations:
* Repair Manual: A repair manual specific to your 2002 Pontiac Aztek is highly recommended. It will provide detailed diagrams, instructions, and torque specifications to avoid causing further damage during disassembly and reassembly.
* Safety: Disconnect the battery's negative terminal before starting any work to prevent electrical shorts.
* Professional Help: If you're uncomfortable working on your car's HVAC system, it's best to take it to a qualified mechanic. Incorrectly reassembling the dashboard can lead to further damage.
If you've cleared the drain and still have a leak, it's crucial to pinpoint the source more precisely—likely by professional inspection of the AC system. The above steps should solve the most common cause, though.
