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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 998 (Transfer Case - NVG 263-NP1) >> 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 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. 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 a 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 do so could result in a failed reprogramming procedure.
  • Turn OFF all accessories.
  • Turn ON the ignition, with the engine OFF.
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