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1999 Silverado 1500 leaking water

Discussion in 'The Garage' started by abvgrndsub, Nov 29, 2006.

  1. abvgrndsub

    abvgrndsub Registered Member

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    My truck is leaking water between the firewall on the right side of the truck. I can't see exactly where its coming from so I think its the heater core. It doesn't leak allot but enough to know there is a problem.

    Is this something that can be fix in a home garage with general tools or do I need to take it to a mechanic. I did the heater core on my 75 blazer but this looks to be a challenge. Any advice appreciated.
     
  2. cjjones

    cjjones 1/2 ton status

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    R U sure that it isn't your AC condensor with condensation from use? Or is the water actually antifreeze coolant??
     
  3. gmc4cw

    gmc4cw 1/2 ton status GMOTM Winner

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    when does it leak? all the time, after running the A/C, or when its raining. three different problems.
     
  4. obijuan

    obijuan 1/2 ton status GMOTM Winner

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    if its antifreeze. use stop leak and trade it in.
     
  5. abvgrndsub

    abvgrndsub Registered Member

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    It only leaks if the air or heater is on. I was hoping that is was condensation but its coming thru the welds of the bottom of the firewall. I think I've only seen water dripping from that silver condesor unit in the past.
     
  6. Jishory

    Jishory 1/2 ton status

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    is it water or coolant?
     
  7. Confedneck79K30

    Confedneck79K30 3/4 ton status

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    that's a heater core most likely, but you need to really get under it and take a look for sure, or have a good mechanic friend look at it maybe?
     

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