Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2000CAB & CHASSIS C2500, 6.5 F, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1385 (TRANSFER CASE - NVG 263-NP1 (SELECTABLE))REPAIR INSTRUCTIONSTRANSFER CASE CONTROL MODULE REPROGRAMMINGSET-UP FOR MODULE PROGRAMMING/REPROGRAMMING
2000 Chevrolet Cab & Chassis C2500, 6.5 F, Automatic
Set-up for Module Programming/Reprogramming
2000 Chevrolet Cab & Chassis C2500, 6.5 F, AutomaticSECTION Set-up for Module Programming/Reprogramming
WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 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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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.