The H3 might be an E67 ECM but the 2007 H2 is an E38 and had a conventional mechanical fan (with a thermostatic clutch).
The H3 might have a PWM controlled clutch fan like the Trailblazer etc but it doesn't have a PWM speed controlled electric fan.
Quote:
Originally Posted by erick_e
2007 H2 and H3 have a fan clutch, so no electric fan.
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