The electronic hvac control module in my truck just shut off driving. I replaced it with one from the salvage yard, didn't fix it. Used a volt meter and tested power wires, the battery and ignition power are fine. The main ground shows good but the second shows bad. Don't know where this ground goes or if it even if it would effect the module. Hot here and don't have a/c.
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Sunday, August 28th, 2011 AT 2:49 AM