| Business | Phone |
| 1-Discount Test Only Station 2 13100 Brookhurst St, Garden Grove 92843 | (714) 554-5731 |
| All Auto Test Only 6961 Chapman Ave, Garden Grove 92845 | (714) 799-0588 |
| Andy Test Only Center 13128 Magnolia St, Garden Grove 92844 | (714) 636-0035 |
| Auto Research Center 7527 Park Ave, Garden Grove 92841 | (714) 895-9184 |