66ImpalaLT1

A few months back I purchased a used set of wheels and tires with sensors. I never tried to program them until last weekend. Only one front and one rear will program. All four of my original's program just fine. I'm using a magnet bowl (for nuts and bolts) to do this.

Is there something else I should try before I replace those two with my originals?

Eric

ps: I also tried another magnet with no luck on these two sensors.