How to decode Buick Luzon 3.0 electronic idle speed?

If you do it manually, you can't rule it out. This is necessary with the help of a dedicated decoder. Or there is a way, you can try. You can take the car out. Idle from D gear, then shift to 3rd gear and 2nd gear. Put in another gear. Start from first gear and shift to d gear. Start from first gear, shift to D gear, and repeat several times. You can try. If there is something wrong with your car, ask the car mechanic. 4S shop professional technician, 10 minutes to solve.