1965 Chevelle Interior - Click Link for Picture

Disclaimer: Interior configurations may not be correct. Example photos are for seat type/color/material only.
* Combination Pattern Imitation Leather & Imitation Leather.
Bench Seat ~ (model availability) Bucket Seat ~ (model availability)
707 ~ Medium Saddle Ramada Cloth, Imitation Leather
(13637-69)
710 ~ Medium Saddle Pattern Imitation Leather *
(13837-67)
709 ~ Medium Saddle Pattern Imitation Leather *
(13635-67)
714 ~ Black Pattern Imitation Leather *
(13837-67)
711 ~ Medium Saddle Pattern Imitation Leather
(Not listed but documented on 13667 & reported on 13837)
717 ~ Light Fawn Pattern Imitation Leather *
(13680)
721 ~ Unknown color/pattern/material documented on 12B Baltimore 13667 convertible 724 ~ Medium Turquoise Pattern Imitation Leather *
(13680)
728 ~ Medium Blue Pattern Imitation Leather *
(Not listed but documented on KAN 12D & 03D 13667)
726 ~ Medium Red Pattern Imitation Leather *
(13680)
739 ~ Medium Blue Ramada Cloth, Imitation Leather
(13637-69)
741 ~ Medium Blue Pattern Imitation Leather *
(13837-67)
742 ~ Medium Blue Pattern Imitation Leather
(Not listed but documented on Fremont 3B 13635 wagon & 09C Baltimore 13667 convertible)
770 ~ Light Fawn Pattern Imitation Leather *
(13837-67)
743 ~ Medium Turquoise Pattern Imitation Leather *
(Not listed but found on 04A KAN 13667 convertible & 12D BAL 13667 convertible)
786 ~ Medium Red Pattern Imitation Leather *
(13837-67)
748 ~ Medium Turquoise Pattern Imitation Leather *
(13480)
792 ~ Ivory Pattern Imitation Leather (black trim)
(13837-67)
749 ~ Medium Turquoise Radiant Cloth, Imitation Leather
(13411-35-69)
796 ~ Ivory Pattern Imitation Leather (turquoise trim)
(13837-67)
750 ~ Medium Turquoise Ramada Cloth, Imitation Leather
(13637-69-80)
799 ~ Medium Slate Pattern Imitation Leather *
(13837-67)
751 ~ Medium Turquoise Rialto Cloth, Turquoise Imitation Leather
(13211-69)
753 ~ Medium Turquoise Pattern Imitation Leather *
(13635-67)
755 ~ Medium Turquoise Pattern Imitation Leather, Imitation Leather
(13215)
757 ~ Fawn Imitation Leather, Light Fawn Imitation Leather *
(Not listed but found on 12E, 04A, 05A & 05B Baltimore 13667 Malibu convertibles)
762 ~ Light Fawn Radiant Cloth, Imitation Leather
(13411-69)
763 ~ Light Fawn Ramada Cloth, Imitation Leather
(13637-69-80)
764 ~ Light Fawn Rialto Cloth, Imitation Leather
(13211-69)
765 ~ Light Fawn Pattern Imitation Leather
(13215)
766 ~ Light Fawn Pattern Imitation Leather
(13635-67)
767 ~ Light Fawn Pattern Imitation Leather
(13480)
772 ~ Medium Red Ramada Cloth, Imitation Leather
(13637-69-80)
774 ~ Medium Red Pattern Imitation Leather *
(13635-67)
778 ~ Medium Red Radiant Cloth, Imitation Leather
(13411-35-69)
780 ~ Medium Red Rialto Cloth, Imitation Leather
(13211-69)
781 ~ Medium Red Pattern Imitation Leather
(13215)
794 ~ Medium Red Pattern Imitation Leather
(134-13680)
 
Source: Trim Combination Chart, Chevrolet P&A Catalog, August 1972 Revision 30A
789 ~ Unknown color/material found on Canadian export to Europe
Interesting tidbits:
A Powerglide or 4-speed manual Malibu SS would have bucket seats and console as standard equipment, a 3-speed manual would not have a console. Powerglide equipped Malibu SS models could have the console deleted and both the Powerglide and 3-speed manual cars could request a column shift as well as request a bench seat.

Prior to January of 1965, Malibu & Malibu SS seats had ribbed inserts while those after January were smooth inserts. No specific date is known so there may be overlap as old material stock was being used up.

Additional trim tag code for interior paint color
Code Color Code Color
A Aqua H White/Aqua
B Blue L Black Vinyl
C Saddle S White/Black
D Red V Fawn Vinyl
E Black W Slate
F Fawn X Slate/Gun Metal
G Green