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duramax fan

  1. SlowBoat

    97 GMC free wheeling fan clutch leads to upgrades

    Had my fan clutch go into free wheel mode on long curvy 2 lane grade with traffic backed up till I made it to a pull off. Let the engine idle with hood up while dash temp gauge dropped from indicated 230 back down to 185. A good 30 minutes with the fan jerking into motion now and again...
    • SlowBoat
    • Thread
    • 6.5l duramax fan hayden fan clutch water pump
    • Replies: 7
    • Forum: GM 6.5 Diesel
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