Overheating

1997 CHEVROLET TAHOE
170,000 MILES • V8 • 4WD • AUTOMATIC
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STEVENG21
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My 1997 Tahoe is overheating. I have replaced the radiator, water pump, thermostat, and fan, but it is still overheating. it is also smoking like crazy out of the tail pipe. I hooked it up to a OBD 2 scanner and it threw these codes out:

MAF/VAF A circuit low input P0102
Close loop fuel control insufficient coolant temp P0125
O2 sensor heater circuit malfunction Bank 2 sensor 1 P0155
Enging coolant circuit low input P0117

What do i need to do to get this thing running right?
Jun 1, 2011 at 11:58 AM
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WRENCHTECH
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What color is the smoke you're seeing?
Jun 1, 2011 at 12:16 PM
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STEVENG21
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It is a really thick white smoke.
Jun 1, 2011 at 12:27 PM
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WRENCHTECH
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That means you're burning coolant. You have either a bad intake manifold gasket or a more serious blown head gasket.
Jun 1, 2011 at 12:30 PM
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STEVENG21
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what am i looking at price wise to get that fixed? I don't have the tools and know how to do that myself.
Jun 1, 2011 at 12:33 PM
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WRENCHTECH
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Nobody knows unto the engine is taken apart and the degree of damage is determined.
Jun 1, 2011 at 12:35 PM
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STEVENG21
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do you think $1000-1500 will take care of it?
Jun 1, 2011 at 12:37 PM
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WRENCHTECH
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Yes, it should
Jun 1, 2011 at 12:39 PM