This achievement requires you to complete the mission "Franklin & Lamar".
I will be showing you a text and video guide if you prefer a specific type of guide to unlock this achievement.
The video guide will be under the text guide.
After completing the "Prologue" mission, which is the heist in Ludendorff, North Yankton, over 9 years ago, it introduces the basic mechanics of the game, you will get a cutscene. Once it ends, you will be someone named Franklin, run to Lamar and choose either the white car or the red car and you will get another cutscene. After it, you will be following Lamar across the streets of Los Santos, make sure to not lose him. Make sure to use your brakes so you don't crash into anything and lose him. Once you enter through the Union Depository and come out of the other end, you have a cutscene. After it, you will have a 2 star wanted level, try to lose it by taking lots and lots of corners and shortcuts. Once you manage to lose the wanted level, head to Simeon's dealership ( follow the yellow line on your map on the left bottom corner ). As you arrive, Franklin will get out and you have to move towards Simeon and Jimmy. A cutscene appears and after it, you will earn this achievement.NOTE: IF YOU DON'T GET THE ACHIEVEMENT, REPLAY THE MISSION IN THE "GAME" TAB ON THE MENU
Here is the video guide.
Credit for the video to rellirel82 ( https://www.youtube.com/channel/UCIyZQVzjH1wjHMP2aeXYZBg