Heat

Tiny
MARYLOPEZ
  • MEMBER
  • 2001 PONTIAC GRAND AM
  • 3.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 175,621 MILES
My heater only blows warm air, the A/C works fine. What could it be?
Friday, November 10th, 2017 AT 5:44 PM

1 Reply

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
If the AC works good but the heat is only lukewarm, either the engine is not coming up to full temperature due to a thermostat problem or the heater core could be restricted. You could try removing both heater hoses and back-flushing the heater core with a garden hose.
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Friday, November 10th, 2017 AT 6:17 PM

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