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Home >> GMC >> 1994 >> Forward Control 6.5 Y, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - 6.5L Diesel >> Miscellaneous ECM Controls >> Cooling Fan (C-12) >> Cooling Fan Motor
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Cooling Fan Motor

Disconnect cooling fan motor harness connector. Apply battery voltage to one of the fan motor terminals and jumper the other terminal to ground. Fan motor should activate. If fan motor does not activate, replace faulty fan motor.

NOTE: For a more specific system testing, refer to the following C-10 or C-12 diagnostic charts. If any chart other than a C-10 or C-12 chart is referenced, see appropriate TESTS W/CODES article in this section below.
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