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05 silverado coolant leak

This is a discussion on 05 silverado coolant leak within the GM Trucks forums, part of the Vehicle Specific category; have a 05 silverado with 5.3 can smell coolant in engine bay but can't see anything leaking. any sugestions? thanks...

  1. #1
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    1989 camaro iroc

    05 silverado coolant leak

    have a 05 silverado with 5.3 can smell coolant in engine bay but can't see anything leaking. any sugestions?


    thanks

  2. #2
    Senior Member 5.0THIS's Avatar
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    95 Z28

    The water pump gaskets are a known weak spot, but may only leak a small amount and might go unnoticed. Same thing with the water pump itself, take a look at the weep hole.

  3. #3
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
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    2008 Hummer H3

    Agree, coolant almost always leaves a trail usually a white color like trail after it dries.

    Check around your rad cap and heater core lines also.
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    Member Sweet Chops's Avatar
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    1999 Camaro Z28

    How many miles do you have on the truck. More than likely the water pump gasket. I had to replace my gaskets at 50,000. 04 5.3 Sierra.

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    1989 camaro iroc

    has around 65,000 noticed white color at rear of water pump on passanger side. should i pressure system with a coolant pressure tester? if so do it hot or cold?

  6. #6
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    1989 camaro iroc

    has around 65,000 i noticed a small white trail at rear of water pump on passanger side. should i pressure system ? if so hot or cold?

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    2002 CETA T/A

    These are notorious for leaking for a short time only when they cool down. Water pump gasket is the fix, replace pump if you are overzelous on preventive maintainence, but the gasket is the culprit.

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