2005 GMC Envoy antifreeze drain plug

Tiny
MIKE NELUM
  • MEMBER
  • 2005 GMC ENVOY
Air Conditioning problem
2005 GMC Envoy 6 cyl Four Wheel Drive Automatic

when I run my a/c, I find antifreeze coming out of a small drain hose in my rear passenger wheel well. Is this a major concern?
Thursday, August 12th, 2010 AT 7:20 PM

3 Replies

Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Are you certain it is coolant and not just water? Water normally drains from vehicle after A/C has ran, that is normal.
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Thursday, August 12th, 2010 AT 7:52 PM
Tiny
MIKE NELUM
  • MEMBER
  • 2 POSTS
Well I tasted it it smells like antifreeze, it is thinner consistancy it is sweet and pinkish in color.
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Thursday, August 12th, 2010 AT 8:22 PM
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
Ok since you're certain it's coolant than most likely the heater control valve is leaky and needs replaced.
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Thursday, August 12th, 2010 AT 8:34 PM

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