HAD FREEZE PLUGS REPLACE THERMOSTAT REPLACED ...

  • Tiny
  • Anonymous
  • 1993 GMC Van
  • 130,000 miles

Had freeze plugs replace, thermostat replaced twice (185 degree I think, stock as per parts house), system back flushed. Engine will heat up and put a out some heat - but if driven over 45 mph, in colder weather, engine cools & heater blows cold.

Saturday, February 2nd, 2013 AT 12:29 AM

1 Reply

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,556 posts

Sounds like a bad heater core. It is most likely clogged

roy

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Saturday, February 2nd, 2013 AT 12:32 AM

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