Group Option Codes
Codes are listed by group and in alphabetical order within the group. A given Chevelle may have one or more from a single group or may not have any from a given group at all.
If you know of any codes not listed here, please email me with details - (1) year, (2) body date, (3) plant, (4) group number, (5) letter code, (6) option if known, and a photo of the tag would be appreciated.
| Group 1 - No number precedes Group 1 | |
| D ~ Power convertible top [RPO C06] | E ~ Tinted glass (all) [RPO A01] |
| F ~ Power bench seat [RPO A41] | G ~ Power tailgate [RPO A33] |
| O ~ Two-tone paint [RPO 950] | T ~ Power bucket seat [RPO A46] |
| W ~ Tinted windshield (only) [RPO A02] | X ~ Power windows [RPO A31] |
| Group 2 - preceded by the number "2" | |
| H ~ Less heater equipment [RPO C48] (3) | K ~ Air conditioning [RPO C60] |
| L ~ 4-speed transmission [RPO M20] | M ~ Powerglide transmission [RPO M35] |
| N ~ AM/FM Stereo multiplex [RPO U79] | P ~ Comfort & Convenience group - Type A [RPO Z01] (2) |
| R ~ Rear speaker [RPO U80] | S ~ Rear antenna [RPO U73] |
| Y ~ Unknown - found on tags from Kansas City | |
| Group 3 | |
| B ~ Rear window defogger [RPO C50] | C ~ Instrument panel pad [RPO B70] |
| Group 4 | |
| F ~ Comfort & Convenience group [RPO Z01/Z13] (1) | M ~ Body modifications [part of RPO Z16] |
| P ~ Unknown - found tags from Kansas City and Framingham | U ~ Spare wheel lock [RPO P19] |
| Group 5 | |
| O ~ Suspect seat belt delete [RPO A62] | W ~ Custom deluxe seat belts with retractors [RPO A49] |
| Y ~ Custom deluxe rear seat belts [RPO A47/RPO A49] (4) | |
(1) The Comfort & Convenience group varied with the series. Type A is for 135, 136, 137, and 138xx series while Type B included a glove box lamp with 131, 132, 133, and 134 series.
(2) The letter "P" isn't known for certain on Framingham Chevelles. It was initially believed to be for RPO Z01/Z13, Comfort & Convenience Group Type A or Type B depending on the particular series. However, a 300 2-door sedan has been documented with "P" in group 2 but it does not have a glove box lamp nor backup lamps, only a driver side door mirror.
(3) Found on a 1965 Nova. Presumed to be the same code for a Chevelle tag.
(4) Entered production March, 1965
*** The letter "L" isn't known on Atlanta & Framingham Chevelles. It is believed this letter "L" is not in group 5 as it has been found on several tags with no group 5 designation.