Question about 2004 GMC Envoy

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My passenger side front floor board is flooded in my 2004 gmc envoy. What could be wrong?

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I had this problem and it was from the a/c drain tube being clogged with debris. I am no mechanic, but I just pulled out the little black drain hose

Posted on Jul 13, 2011

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If it is flooded with water(RAIN) & you park under or near a tree, the cowl vent could be plugged with debrise & not allowing the cowel to drain propperly,permitting water ( especially during heavy rain)to back up & flow into the passenger compartment, if it is radiator fluid, it could be your heater-core needs replaceing

Posted on Apr 09, 2011

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Is it antifreeze? If so, you have a hole in your heater core?

Posted on Apr 09, 2011

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Does the flooding get worse after it has raine?, these could be a faulty windshield seal or a cracked windshield. Inspect your windshield visually outside and inside on the passenger side, you should be able to see the faulty seal. I recommend a technician to reseal it if its faulty, had the same problem and it was done in less than 20 minutes. thanks, let me know on the issue.

Posted on Apr 09, 2011

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I have a 2004 GMC Envoy. I have a leak to the passenger side floor board when its hot and the air conditioner is running. It is not antifreeze, so I take it that a weep hole for the condensate is plugged...


Damn spiders,Find the hose from under the vehicle and blow some air into the hose,not to high pressure,watch out for the water as it usualy comes out afterwards.Then turn on the blower on high and you should feel some air coming out of the hose.You might want to try the blower on first to see if it actually blocked and not some other problem.Please rate this if it was helpful Thanks

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