Question about 2003 GMC Sierra 1500
Sounds like a blown head gasket, possibly cracked head if the engine was driven while this problem existed and got hot.
Posted on Oct 06, 2009
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Posted on Jan 02, 2017
You have a bad head gasket,most likely
At 204K/122,000 miles is sort of low,but enough
of an issues with the oil burning,you may want to go with
a new motor.
It will be hard to do a cylinder leak down test for ring
issues, with a bad head gasket.
It is coolant going out the exhaust and oil ruining
your radiator,heater core,etc
Posted on Nov 30, 2010
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