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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1434 (Transfer Case - NVG 126-NP4) >> Repair Instructions >> Transfer Case Control Module Reprogramming >> Set-up for Module Programming/Reprogramming

Set-up for Module Programming/Reprogramming

WARNING: This page is about a different car, the 2004 Oldsmobile Bravada and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
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. Before reprogramming close the doors and wait two minutes to allow other modules to stop communicating via the class 2 data line. Failure to due so could result in a failed reprogramming procedure.
  • Turn OFF all accessories.
  • Turn ON the ignition, with the engine OFF.