SPS Programming
Here is the tutorial on immo relearning for new key programming on GMC L5P Duramax using GM MDI2 clone scanner and SPS2 (Service Programming System). L5P immobilizer relearn
Tutorial: GM key programming using GM scan tool and SPS (Service Programming System) online subscription. Model example: Chevrolet Tahoe 2016 (the procedure can be applied to other GMs)