2002 GMC Envoy Foul Odor

2002 GMC ENVOY
89,000 MILES • 6 CYL • 2WD • AUTOMATIC
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DENISEYA1
  • MEMBER
  • 1 POST
I have a foul odor coming from my ac... what is that?
Dec 30, 2008 at 10:00 PM
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MMPRINCE4000
  • CAR REPAIR CONTRIBUTOR
  • 8,548 POSTS
Mold or mildew (fungus) in the AC evaporator core.

You can buy powerfull disenfectants from most autoparts stores.

Run in RECIRC mode for 10 min. on highest blower setting, use highest heat mode, prevent compressor from engaging by disconneting compressor wire.

Remove passengers side lower side dash tim panel, and small access cover from HVAC housing.
Point nozzle of disenfectant insidehole and to left towards evaporator core, follow manufactuers instructions. Also make sure evaporator housing drain tube is clear.
Jan 17, 2009 at 9:51 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.