This keyless remote programming instructions work for isuzu remote with FCC id BAB237131-013, on the back of it.
2. Turn the ignition switch to ON.
system security system LED on the instrument panel comes on, release the programming button. (steps 3 and 4 must be done within 5 seconds of each other.)
4. Press and release the top button of the remote. Check that the LED goes out, the siren chirps once, and the front marker lights flash to confirm.
6. Turn the ignition to OFF to exit programming mode.