Question about 1998 Chevrolet C1500

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I have a 1998 gmc p/u and it started to leak what smelled like anti-freeze but it is not leaking from any of the hoses, where else could it be coming from.

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  • Chevrolet Master
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Check the heater core-holding tank-and intake manifold behind alternator is a fitting for heater has a habit of leaking

Posted on Nov 15, 2009

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No leak and 2003 nissan xterra smell like anti freeze check radiator,water pump.hoses.heater core.anti freeze level in radiator is perfect


If you can smell,then you have a leak,if the heater core has a pin hole,then the box that houses it will hold the antifreeze to wear you won't see any,have to take the box apart and see,check your hoses going thru the firewall to see if there leaking.

Jan 26, 2016 | 2003 Nissan Xterra

1 Answer

Anti freeze smell inside the car no leaks


It may not be leaking yet, but that is a sign the heater core is going out. If not there could be a hose leaking onto the engine causing the coolant smell to come in through the vents. Check engine coolant level and look for leaks in hoses.

Apr 22, 2014 | 1996 Toyota Corolla

1 Answer

Oil leak


Are you sure its oil or is it anti-freeze.If its anti-freeze you will have a sweet smell come thru the heater when its turn on.

Oct 31, 2012 | GMC Cars & Trucks

1 Answer

I changed the lower raditor hose. Standard remove and replace. No problem. Replaced water and 1 gallon of anti-freeze. Let system warm up and turned on heater. No problems. Test drove and no leaks. Next...


the sweet sickly smell is normal for new anti freeze.once you have run the car for a couple of miles the smell will dissipate.the white foamlike stuff is chalk/lime in the water,harmless.

Aug 21, 2010 | 1996 Jeep Cherokee Sport

1 Answer

We have a 2003 gmc Envoy V6 4X4 Automatic has 108000 miles on it i see that the hose was replaced going to the radiator we smell antifreese under the hood and having to put anti freeze in the over flow...


Well, the fluid from the radiator could be evaporating. Is the upper hose solid when you shut it off?

If you 'smell' antifreeze there 'is' a leak.

Is the fluid 50/50 strength antifreeze to water?

Usually, if there is a leak, it will drip to the ground or come out of the tailpipe (in the case of a bad head gasket).

It is not unusual to have a car with 108,000 mi. to have a leak somewhere.

Keep looking and topping off the fluid.

Jun 28, 2010 | 2003 GMC Envoy

1 Answer

A foul smell in my 1998 Jetta


The heater core could be leaking, possibly a small leak or a cracked pipe to the heater core. I would check around under the passenger side dash, for the smell or any small amounts of anti-freeze.

Apr 30, 2010 | 1998 Volkswagen Jetta

2 Answers

It smells like anti freeze


if its inside the cab? your heater core is leaking most likely

Sep 14, 2009 | 1996 GMC Suburban

4 Answers

I get a smell of antifreeze when I put the outside


Firsdt check the radiator cap thats it tight , then check for any anti freeze visible on the engine, then check under the car for any leaks. Is the smell of anti freeze inside the car ? , check the heater core you may have a leak there. the newer heater cores are aluminum and certain anti freezes, are extra acidic , which causes the anti freeze to eat at the heater core causing leaks, it maybe be a pin hole leak in the heater core ,causing the smell.

Jul 12, 2009 | 2000 Chevrolet Blazer

2 Answers

2004 Envoy Smell like Anti-freeze when turn on the air


probably is a small seep in the heater core. does not have to be leaking enough to find any inside the car to have a strong smell in there just a small seep that makes the heater core wet will do it.

May 20, 2009 | 2004 GMC Envoy

2 Answers

Leak below flywheel.


pull off the tranny inspectiont cover and see if its wet in there, if it is its prob the front tranny pump seal if not and it is anti freeze youve go a hose leaking or intake manifold gasket leaking or a head gasket leak!!! either way the 4 wheel drive would have nothing too do with any of the leaks !!!!

Apr 13, 2009 | 1998 GMC Sierra

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