Question about 2004 Chevrolet Impala

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I have coolant leaking from under the dash on the passenger side, do i need an new heater core?

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Check your hoses and make sure your coolant is to the fill line.

Posted on Jun 03, 2009

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Posted on Jan 02, 2017

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SOURCE: antifreeze leak under dash, passenger side

Nothing special. lots of patience and don't poke any holes in it, don't pinch any wires under box and remember to plug in anything you disconnected going in!

Posted on Mar 11, 2009

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3 Answers

My Kia is leaking a green fluid onto the floor mat on the passengers side. Seems to be coming down from under the glove box area


That is engine coolant leaking from the heater core , you have to have the dash taken apart to fix it ! leaking heater core

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The only fluids under the dash are coolant that circulates through the heater core, or if you have a manual transmission a failed clutch master cylinder can leak brake fluid under the dash right where clutch pedal is located. If the heater core is leaking, it usually shows up on the passenger side. If it is just plain water, you need to check how rain water could be getting in past the firewall and under the dash.

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Your heater core has developed a leak - the wetness on the passenger side carpet is engine coolant
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Your strategy: disassemble dash down to heater core, determine whether you'll need a new heater
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If leaking coolant under dash on passenger side floor broad it's your heater core. Call's for 2.8 labor flat time to remove heater core, in some case's you'll have to recover, evacuate and recharge your A/C system to remove your heater core.Sit under dash on passenger side.

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1 Answer

Heater takes to long to get hot and water is dripping form dashboaerd on passenger side i have a 2000 grand jeep cherokee


Sounds like one of two things are happening. Either the hose going to the heater core (on the engine side of the dash) is leaking causing coolant to spray into the passenger compartment or your heater core is leaking which is causing the dripping from the passenger side of the dash. This would also cause a loss of coolant in the engine which would cause the engine to overheat and not enough coolant to get to the heater core to supply heat to the passenger compartment. Check your coolant level (while engine is cold) and refill it with a 50/50 mix of coolant and water after you tighten the leaking hose or replace the heater core.Then start the engine and let it warm up to operating temperature. Again let it cool down and then top off the radiator with the 50/50 mix of coolant. Do not under any circumstances open the radiator cap while the engine is hot.

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1 Answer

My buick is releasing steam vapor though the vest and is leaking in the car from the dash, what could it be? and also it is leaking from underneth the passenger side.


Your heater core needs to be replaced. It's located on the passenger side , under the dash. The heater core is like a small radiator. Coolant from the engine is circulated through it, and that is what provides heat in the car. The heater core is leaking, causing the 'vapor' through the vents, and leaking on the carpet on the passenger side. Heater cores are a pain to remove and replace, it's quite a labor intensive job.

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2 Answers

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that may very well be the heater core. it would be dead center at floor under dash. on the firewall

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1 Answer

Antifreeze/coolant leaking from under passenger side dash


If it's your heater core, unless you're a mechanic you probably should get professional help. The heater core is located on the firewall and many parts need to be replaced to get to it. Do you see water on the floor inside the vehicle, Many times a heater core will leak inside.

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96 thunder bird overheating


Sounds like the heater core (a small radiator of sorts under the dash) is leaking or a hose going to it is leaking. If in a warm climate, you could bypass or block the heater hoses temporarily. Their only purpose is to make heat avail to interior of car. The 2 heater hoses either connect to feedthru's at the firewall or simply pass thru the firewall to the heater core. Every car I've seen has it on passenger side.

Peer up under the dash, it should be clear where it's coming from.

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