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Thread: PWM radiator fan controller
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07-29-2015 #11
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Andrew reports that my controllers work perfectly.
And so after a considerable amount of debugging, testing components, and general frustration and angst... I called GM Powertrain today and talked with tech support. They tell me that the fan pwm circuit is disabled in the GMPP crate motor ECMs in an effort to simplify tech support and reduce warranty claims.
So: you guys with GMPP crate motor E67s... how did you get your PWM fans to work?John Parsons
UnRivaled Rides -- Modern upgrades for your ride.
UnRivaled Rides recent project -- LS9-powered 69 Camaro
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