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· Administrator
2002 F55 STS, 2014 Explorer XLT, F-150
79,967 Posts
Google something like "cadillac forums 2004 deville heater core replacement".

Today will probably be sort of slow for forum participation.

If you really get stuck and want instant gratification, subscribe the car to the online GM/Cadillac service manuals at It's all there, with drawings and procedures.
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