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Home >> Hummer >> 2003 >> H2 >> Repair and Diagnosis >> Transmission >> Transfer Case - BW 4484 >> Repair Instructions >> Transfer Case Control Module Reprogramming >> Set-up for Module Programming/Reprogramming

Set-up for Module Programming/Reprogramming

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IMPORTANT: Ensure that the vehicle battery is fully charged and that a battery charger is no longer connected. If performing this procedure for module replacement, install new module before proceeding.
  • Turn OFF all accessories.
  • Turn ON the ignition, with the engine OFF.
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