I am trying to find the differences between the APYU 3516 and the ANYF 9356. I lost my keys and tried to use a moates adapter and vats eliminated chip to use the non vats key i had but that did not work. My memcal got damaged when i took it out and the new memcal i got was a diffferent one. Looking at the appliction list on this site i think that the only other memcal i could have gotten under the GM part number 16150500 would have been the ANYF 9356. The car starts and runs with this chip but very rich. Just wondering if anyone knew what the differences were. Thanks for any help. -John