Question about 2000 Chevrolet Blazer

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Leaking Freeze Plugs

Is it common on 2000 Chev Blazers to have freeze plugs leaking. The mileage is approx 177K. I replaced two a couple of months ago but probley should have replaced them all because I believe they have been all leaking but one is very bad now to the point I don't drive my truck until I can get it fixed. I am told this is very labor intensive and I realize the part itself is cheap.

What makes them all start leaking at the same time?

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  • puppychow62 Apr 13, 2009

    That is what is confusing me, I live in Dallas, TX - if we had freezing weather it was brief and I park in the garage. I guess it is possible. Thank you.

  • puppychow62 Apr 14, 2009

    I was told they were inspected by the same man that did the rear end job - but my roommate who is not an expert by any means says he thinks he sees a cracked head! What happens is when we pour water/anti freeze into the reserve, it just starts pouring out the bottom, running or not. I just asked if they actually inspected the freeze plugs and he said no. I asked if it could be the water pump and he is not sure...... I think I will stick with my original plan and take it to the shop. I am going to check to see if it is leaking while idling.

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Usually what will make them leak all at the same time is when coolant becomes weak and freezes in cold weather ,coolant expands and puts pressure against the plugs.

Posted on Apr 13, 2009

  • carhob Apr 14, 2009

    well thats confusing me too! did u inspect them to make sure they were leaking or assuming they are?the water pump on those model will often start to leak only when driving truck and when truck is idling or off they dont leak,u can check weep hole on pump to see if it leaks!

  • carhob Apr 15, 2009

    in that case could be rad.,or hose or water pump,id be surprise a cracked head! unless it was overheating and u continued driving it.

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