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Heater blows cold

Tiny
OUT COLD
  • MEMBER
  • 2004 CADILLAC DEVILLE DTS
  • 4.9L
  • V8
  • 2WD
  • AUTOMATIC
  • 141,000 MILES
Heater blows cold, AC blows colder. Temperature set at ninety. Changed thermostat and outside temperature senor. Right now Ia m in the middle of trying to change heater core. Having problems getting to it. Everything off the front except what I think is the air blender. It is in the center behind controls. Any help, I am over my head. Maybe advise on manuals or videos.
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Friday, December 29th, 2017 AT 3:20 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning

Can you verify it is a DTS? I only see CTS?

Roy
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Sunday, December 31st, 2017 AT 6:51 AM
Tiny
OUT COLD
  • MEMBER
  • 3 POSTS
It has DTS on trunk lid, & here's the VIN#
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Sunday, December 31st, 2017 AT 7:03 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Is this a seville or deville?
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Sunday, December 31st, 2017 AT 7:07 AM
Tiny
OUT COLD
  • MEMBER
  • 3 POSTS
DeVille
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Sunday, December 31st, 2017 AT 7:27 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Ok thanks

Pictures attached. You are right there
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Sunday, December 31st, 2017 AT 7:32 AM

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