Leak

Tiny
STACIE76
  • MEMBER
  • 2003 GMC ENVOY
  • V8
  • AUTOMATIC
  • 130,000 MILES
Yesterday after my vehicle had been running fine, after sitting noticed leak under passenger side. Drove it home (five minutes) and as turning into driveway lights came on and it can hot. When parked it immediately antifreeze (my husband said) was running out causing a puddle. He thinks maybe thermostat. Got this vehicle used so don't know if that's ever been replaced.
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Tuesday, April 30th, 2019 AT 8:56 AM

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Tiny
SCWICKEDSTANG
  • EXPERT
Hello,

I would be more inclined to look at hoses and hose clamps. Clamps back off, hoses get holes in them. Thermostats, however, do get stuck closed causing coolant to boil over. I have included a couple of links down below for you to go to.

https://www.2carpros.com/articles/car-is-leaking-coolant
https://www.2carpros.com/articles/replace-thermostat

I have also included for you in the diagrams down below an exploded view of your vehicle's cooling system, as well as coolant type ans capacity and torque values for any parts that might be removed and then reinstalled.Please go through these guides and get back to us with what you are able to find out.

Thanks,
Alex
2CarPros
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Tuesday, April 30th, 2019 AT 9:33 AM

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