2006 Chevy Impala Coolant smell

2006 CHEVROLET IMPALA
83,000 MILES • 6 CYL • 2WD • AUTOMATIC
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JOHN HO10
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Had thermostat replaced 3 months ago. Had to continue to add coolant (over a week's time) until resivoir was filled between "low" and "full" when at operating temp. Also purged air from system.

I smell warm coolant outside of car after a short trip. Under hood, smell is strong around filler cap area. There are no leaks onto the driveway nor any wet areas around hose connections or water pump housing. Had to add about 8 ounces of coolant recently to bring resivor back to proper level.
Found sticky accumulation of coolant in detent of water pump casting below and slightly to right of power steering pully. This is a very small, slow leak. Can't find source

Suggestions?
Aug 1, 2009 at 7:29 AM
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JOHN HO10
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Since no one answered my query, I took car to local shop to determine source of coolant leak. Its coming from water pump shaft. Coolant is transferred from water pump shaft leak to top of engine by serp belt. Very slow leak.
Shop says to wait 60 days or so, (unless leak becomes too problematic), until after-market pumps are available at lower cost.

Are there after mkt. pumps available today?
Aug 25, 2009 at 12:05 PM
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DOCFIXIT
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Yes Advance auto, Auto Zone and NAPA have for 3.5L and 3.9L @$70
Aug 25, 2009 at 12:25 PM
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