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
  • 25,554 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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