For 1973, there were five models:
| The serial number system and locations were the same as the previous year with the sixth symbol changed to "3" to indicate model year. | ![]() |
| Calais were numbered 6C(__)R3Q 100001 to 350000 | |
| DeVilles: 6D(__)R3Q 100001 to 350000 or 6D4(__)R3E 3500001 to 400000 | |
| Eldorados: 6L(__)S3Q 400001 to 450000 | |
| Broughams: 6B69R30 100001 to 350000 | |
| Seventy-Fives 6F(__)R3Q 100001 to 350000. | |
| The new Body Style Number codes were used on both serial number tags and vehicle data plates. |
Books about Cadillac |
History of LaSalle |
Books on other automobiles |
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