Question about GMC Envoy XL
On my 2003 envoy xl, the little rubber tube attached to the bottom of what seems to be a rear heater core, is leaking anti-freeze and sometimes causing the vehicle to over heat if I don't make sure the radiotor and overflow bottle are topped off.
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Posted on Jan 02, 2017
SOURCE: no rear heat
There is a seperate heater core for the back of the Suburban. It is located behind the right rear interior quarter panel. You have to pull everything back there the heck apart to get to it. The blower motor is located in the same area, so if you should be having any issues with it, plan on doing them both at the same time. Also, you have to drain the whole coolant system, so if you need to do anything with the front heater core (doesn't sound like you do), plan on doing that at the same time too. Good luck!
Posted on Dec 21, 2008
Its hard to figure this one out, without looking at it. pressure test the system pin point the leak, it could be your waterpump. hoses thermostat housing. freeze plugs, head gasket, radiator.
Posted on Apr 17, 2010
yeah hose and clamps are the cheap easy way to go there, or if your lucky, the leak is right at the spot where the hose meets the metal and you can just cut the end off and put it back with the old clamp
Posted on Jun 27, 2010
the heat accuator could be bad. It is a motorized part that adjusts your temprature by allowing cold or warm air flow when you adjust the temprature at the knob you are turning
Posted on Jan 21, 2011
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