The interior trim color code is a 3-digit number. Those not checked under Bucket are bench seat styling.
There may be additional interior codes for Oshawa-built Chevelles as I have no source to reference.
Atlanta, Framingham, and Kansas City also included a -A or -B to denote bench or bucket seat. When optional headrests were ordered the -A or -B gave way to -S for bucket seats and -E for bench seat; Baltimore, Fremont, and Oshawa did not.
| Code | Color | Bucket |
| 705 | Plum Royale Cloth, Antique Plum Imitation Leather (sport sedan only) | |
| 720 | Medium Fawn Imitation Leather | |
| 723 | Medium Bright Blue Imitation Leather | |
| 724 | Medium Blue Redmond Cloth, Medium Blue Imitation Leather | |
| 726 | Medium Blue Rio Cloth, Medium Blue Imitation Leather | |
| 727 | Medium Blue Pattern Imitation Leather | |
| 728 | Medium Blue Roncina Cloth, Medium Blue Imitation Leather | |
| 729 | Medium Blue Imitation Leather | |
| 730 | Medium Blue Royale Cloth, Medium Blue Imitation Leather (sport sedan only) | |
| 731 | Medium Bright Blue Imitation Leather | x |
| 738 | Medium Blue Imitation Leather | x |
| 746 | Dark Maroon Roncina Cloth, Dark Maroon Imitation Leather | |
| 747 | Medium Red Imitation Leather | |
| 750 | Medium Red Imitation Leather | x |
| 757 | Black Pattern Imitation Leather | |
| 759 | Black Roncina Cloth, Black Imitation Leather | |
| 761 | Black Imitation Leather | |
| 762 | Black Royale Cloth, Black Imitation Leather (sport sedan only) | |
| 763 | Black Imitation Leather | x |
| 764 | Black Rio Cloth, Black Imitation Leather | |
| 766 | Medium Red Imitation Leather | |
| 748 | Medium Red Imitation Leather (El Camino only) | |
| 749 | Medium Red Imitation Leather (El Camino only) | x |
| 750 | Medium Red Imitation Leather | x |
| 760 | Black Imitation Leather | |
| 761 | Black Imitation Leather | |
| 762 | Black Imitation Leather (El Camino only) | x |
| 763 | Black Imitation Leather | X |
| 764 | Black Rio Cloth, Black Imitation Leather | |
| 766 | Black Pattern Imitation Leather | |
| 768 | Medium Fawn Redmond Cloth, Medium Fawn Imitation leather | |
| 769 | Medium Fawn Rio Cloth, Medium Fawn Imitation Leather | |
| 770 | Medium Fawn Pattern Imitation Leather | |
| 775 | Medium Turquoise Roncina Cloth, Medium Turquoise Imitation Leather | |
| 776 | Medium Turquoise Imitation Leather | |
| 778 | Medium Turquoise Imitation Leather | x |
| 782 | Medium Gold Roncina Cloth, Medium Gold Imitation Leather | |
| 783 | Medium Gold Imitation Leather | |
| 784 | Medium Gold Imitation Leather | x |
| 794 | Medium Gold Royale Cloth, Medium Gold Imitation Leather (sport sedan only) | |