Location: You need to reach the buildings located right next to the road in the Eastern part of Sandy Shores (the above screenshot).You will meet Joe and Josef here, members of the title civil patrol that are looking out for illegal immigrants.
Get into the SUV that belongs to the members of the civil patrol (Park Ranger) and drive to the East, towards the Yellow Jack Inn. Park the vehicle in front of the inn, come inside and examine the building. Return to the parking lot and, quickly, get into the car again to start the pursuit after the escaping Mexicans. It would be good to finish this chase early enough, because this is required for the completion of the mission in 100%. Use automatic weapon or any other good weapon but, lay your fire down only on the car that you are chasing, instead of the people in it.
After you have sufficiently damaged the car that you are chasing, it should stop. Get out of the SUV, from your inventory select the stun gun, which you have received from Joe. Use the stun gun twice on the mariachi. After you arrest the apprehended people, get into the car on which they were escaping and wait for the mission to conclude.
Rewards for the completion of the mission:
- 500 dollars
- new contact on Trevor's contacts list: Joe
Requirements for the completion of the mission in 100%:
- Mariachi My Ride - you need to get into the car that the Mexicans were escaping on.
- Stop the Music - you need to complete the chase of the mariachis within 40 seconds. Keep using the machine gun, or any other good weapon, to your aid and lay your fire on the vehicle of the refugees, to render it immobile.