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Old 10-09-2017, 11:10 PM   #3
edhtrd71
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Join Date: Jan 2011
Location: Edinburg, Texas.
Posts: 194
Re: 99 tahoe Cant figure out the problem

X2 on getting the system full. A failed radiator cap can cause a loss of coolant and the coolant to boil if it doesn't hold pressure. The coolant needs to be under pressure in order to raise the boiling point. X2 on checking your cooling fans. Don't worry about intake gaskets on a 99 because the intake does not have any coolant or oil running through it.
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