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  1. #1

    Default antifreeze leak?

    other day I was under my truck and I noticed there was antifreeze on the ground. it was on the left side passanger side of the water pump. but I checked the lines couldn't find nothin, checked the weep hole couldn't find nothin and I've drove it all day today and havbt found the first drop. anyone got a clue what could cause this.
    03 silverado ls model x-cab z71 w/ 5.3l.
    black lo pro toolbox
    ruff country leveling kit
    285/70/17 tera tracs
    stock 17's that are rhino lined
    5% tint

  2. #2


    2 words...Pressure Test. Good Luck.
    1994 Silverado 1500 2 wheel drive 350 TBI Auto (4L60E). Standard Cab / Bed, all power.
    Impala SS Club of America Member# 2122

  3. #3


    I've seen the freeze plug leak at the right front head but most likely water pump gaskets

  4. #4


    you need to pressure test it or let it run and build enough pressure to look and wait for a drip.

    could be a water pump gasket/ freeze plug/ fitting ect

    05 silverado shortbed

  5. #5


    ok sounds like ill be having a pressure test done i reckon thanks

  6. #6


    Had this on mine, Ended up the water pump gaskets, didnt leak alot or all the time, usually didnt even make it to the ground to drip. Had 120,000 on it so I just did the pump and gaskets. The passenger side gasket was leaking, drivers side was starting to. Fairly easy job, took about 30min but Im a Mechanic and had all the tools.

    Chris - Redford, Michigan
    2001 Silverado 5.3L Z/71 - Daily Driver
    1969 Camaro Z/28 - Supercharged 462

  7. #7


    alrite well im taking it monday to the shop and have the pressure test done. ill let youll know what it turns out to be.

  8. #8


    welll guys it turned out to be water pump gaskets

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