Generic should be fine. I carry a couple. One "heavy duty flasher" for when I have the trailer hooked up (slows down the blink frequency), and one "normal" flasher.

BTW, a cancel code of anything but 16 (cancel signal received - check brake switch, cruise on switch for intermittent, and wiring to/from) means you have a bad component in the cruise system. To read the codes with a voltmeter, tap the two terminals noted above, and look for a pattern like one long bleep, followed by one to 6 short blips. O'scope should make that easy.

Not responsible for advice not taken...