Question about 2003 GMC Envoy

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2003 Gmc envoy vortec 6 cylinder motor. where is the bleeder valve located on the motor? I yhave replaced the water pump and thermostat. Ihave tried to burp the system but am having trouble getting all the air out. I am told there is a bleeder valve on the motor.

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I dont heard about bleeder valve in the water/cooling system in this model; I am still not sure is the bleeding of the cooling system, manual says "disconnect the coolant air bleed hose at the throttle body".

Hope this helps.

Posted on Mar 31, 2011

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Posted on Jan 02, 2017

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How to change thermostat 03 envoy 6 cylinder

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1 Answer

Does my cooling system have a air bleeder valve? I have filed my system with antifreeze, changed my water pump, thermostat and still it heats up quickly.

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Most directions outline removal of the alternator to gain easy access to the hose clamps, bolts and housing of the thermostat. I have located a site that after free registration, has detailed instructions on how to do this job, and the link below that describes an easier method with photos. Check out:

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1 Answer

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