2000 Chevy Silverado possible heater core leak?

Tiny
CARTER96
  • MEMBER
  • 2000 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
My chevy just started having a strong smell of coolant when I turn my heat on and gets worse on defrost. The temp is not getting up to normal either. Will running my truck with this if it is a leak be alright as long as I dont run my heater and how difficult is it to change heater core out?
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Wednesday, January 28th, 2009 AT 7:31 PM

5 Replies

Tiny
BILLYMAC
  • MECHANIC
  • 2,204 POSTS
Hi if your truck don, t run low on coolant it will not hurt it. And you may as well use the heater because makes no diff if on or off. Yes kind of a big job to replace. Time consumeing. Billymac
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Wednesday, January 28th, 2009 AT 7:44 PM
Tiny
CARTER96
  • MEMBER
  • 17 POSTS
Is there anything I could use for a quick patch for a few weeks until I can get to changing it out? Also does the entire dash and ac lines need to be disconnected to change out core?
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Wednesday, January 28th, 2009 AT 7:51 PM
Tiny
BILLYMAC
  • MECHANIC
  • 2,204 POSTS
Hi you can put some cooling system sealer in it. There are many kinds at the parts store. And yes a/c and heater lines will have to be removed. Billymac
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Wednesday, January 28th, 2009 AT 7:57 PM
Tiny
CARTER96
  • MEMBER
  • 17 POSTS
Is it necessary to flush system before adding the liquid glass stop leak or can it be added straight to system than flush after?
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Thursday, January 29th, 2009 AT 8:46 AM
Tiny
BILLYMAC
  • MECHANIC
  • 2,204 POSTS
Different types work difff ways you will have to read the instructions. But most will mix with antifreeze. Billymac
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Thursday, January 29th, 2009 AT 11:23 AM

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