Question about 2004 GMC Envoy

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Coolant leak why is there coolant leaking from the gas tank area

Posted by Anonymous on


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 73 Answers

SOURCE: 90 GMC PU brake line over gas tank has leak-need diagram

no you can cut and reroute the line ive done it in the past many times. just remember more line means more fluid so after you bleed it check the level again after a week or so.

Posted on Jun 11, 2009

  • 16 Answers

SOURCE: Have a 1995 GMC Sierra Truck. Gas is leaking from

chances are your leaking from the gas line from your fuel tank to engine. More than likely the pressure line, but it could be your return line as well. To figure this out you would need to take your fuel tank off the vehicle, and inspect the lines. look for rust and cracks. Rust is a good sign of weakness, and chances are this is where your leak is. Hopefully this helps.

Posted on Jun 18, 2009

  • 266 Answers

SOURCE: I replaced all my hoses


Posted on Oct 21, 2010

SOURCE: the reserve coolant tank is leaking and the low

Remove the tank & check it out

Either it has a hole or the hose going to it

Posted on Jul 14, 2011

  • 51 Answers

SOURCE: GMC Jimmy gas filler neck leak

Replace your filler neck. It's not hard and when you buy the new one, installation should be obvious and rather straight forward.

A fuel leak is not something to take lightly and it will get worse over time.

Most fuel systems are pressurized (that's why you'll sometimes hear a hissing sound when you open your cap) so if your filler neck is leaking it can throw a code.

Posted on Dec 03, 2011

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Maybe its a choke problem, or some other carburetor problem.

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Sounds like you have a leaking head gasket or damage to the engine from when it overheated.
A leaking head gasket can cause compression to leak into the cooling system and pull coolant into the cylinders which is burned out the exhaust. It does not have to leak into the oil.
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If the smoke has a sweet smell to it then it is coolant from an internal leak inside the engine like a head gasket or other source. To confirm that you have a leaking head gasket have a shop problem the coolant recovery/surge tank with a gas analyzer for the presence of hydrocarbons in the coolant tank, this indicates for sure that a head gasket is the cause of the white smoke.

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Why does it sound like coolant is getting flushed back into the coolant tank? Like when I start up the truck to warm up, I'll give it a little gas. Then I hear a leaking sound by the coolant tank but...

If there are no leaks this is fine. The coolant contracts as it cools over night and this noise you hear is the system equalizing itself while coming under pressure from the forces of the water pump, radiator cap spring, thermostat spring and any other expansion - contraction issues involved in the cooling system components. Hope this helps ease your mind. Let me know. Thanks. PS be sure your system is filled with the proper type and ratio of coolant to water for you areas temperature ranch.

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Coolant tank low filled it up went for 10 min trip to store and back. The coolant empty, I haven't had any leaks that I could see.

if youre sure that there is no leaks, drive the car continously up to 15 to 30 minutes, observe the cooling system. if it cool. replace only cylinder head gasket, if engine cooling not normal. check cylinder head and sub systems, replace p ings and gasket

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Gas leaking from the cap area of the gas tank

Sounds as if the seal on that gas cap is old and worn out. Replace the gas cap.

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replace your coolant reservior cap; the rubber ring has become brittle and "steams" the coolant out as you drive

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