2000 Chevy Astro

Tiny
ERKKLO
  • MEMBER
  • 2000 CHEVROLET ASTRO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 16,391 MILES
The heater just blows cold, checked vacum lines they all seem good is it possible that the temp. Control knob is faulty
Thursday, October 30th, 2008 AT 10:10 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Hi:
Make sure the coolant system is full. Next, is the engine warming to operating temp? If not, replace the thermostat. If it is, we need to check the heater core. There are two heater hoses that go through the firewall. THey are around 1/2 inch hoses. After you find them, allow the car to heat up to operating temp with the heater control on hot. Feel the hoses. One should be very hot, and the other should be just slightly cooler. Let me know what you find so I can further advise you.

NOTE: The heater hoses can be very hot, up to 200 degrees. Make sure you don't get burnt.

Joe
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Friday, October 31st, 2008 AT 8:02 AM

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