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Old 11-11-2009, 09:25 PM
joegr joegr is offline
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Re: 03' LS heater control valve

Who is telling you this? Why do they think the DATC module is bad? It is uncommon for it to fail. It is very common for the DCCV (heater control valve) to fail.
see link for valve diagram
http://deneau.info/ls/s6x~us~en~file...tm~gen~ref.htm
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