Cadillac VIN Check
Founded in 1902, Cadillac became America's premier luxury brand and pioneered innovations including the electric starter and V8 engine. The Escalade remains Cadillac's flagship and one of the best-selling full-size luxury SUVs.
Today every Cadillac built for regulated markets carries a 17-character VIN. Positions 1–3 (1G6, 1GY and related codes) identify the maker; positions 4–8 describe the vehicle; positions 9–17 cover validation, year, plant, and serial. 1G6 covers Cadillac cars; 1GY is commonly used for Escalade and Cadillac SUVs.
On this page you can paste any Cadillac VIN into the decoder above. We check format (no I, O, or Q), verify the ISO 3779 check digit, resolve the WMI against our registry, and apply Cadillac-specific rules researched from NHTSA vPIC, ISO standards, and manufacturer documentation.
Cadillac WMI prefixes we decode
| WMI | Country | Notes |
|---|---|---|
1G6 | United States | Cadillac cars |
1GY | United States | Escalade / SUVs |
Remember: a VIN decode shows how the vehicle left the factory. It does not show accidents, title brands, odometer history, or prior owners.
How to Read a Cadillac VIN
Here is how DecodeAnyVin interprets a Cadillac VIN, and how you can read the same characters manually.
Reading a Cadillac VIN by hand
Positions 1–3 (WMI). Expected prefixes include 1G6 (United States), 1GY (United States). 1G6 covers Cadillac cars; 1GY is commonly used for Escalade and Cadillac SUVs.
Position 4 (Vehicle Line). Common mappings in our decoder: brand-specific line codes.
Position 5. Usually series, trim, or drivetrain detail for Cadillac.
Position 8 (engine / related). Examples: engine / market codes that vary by year.
Position 9. ISO 3779 check digit — DecodeAnyVin validates this automatically.
Position 10. Model year on the standard 30-year letter/digit cycle.
Position 11. Assembly plant. Examples: Cadillac plant letters.
Positions 12–17. Production serial unique to that plant line.
Cadillac-specific quirks to watch
- VDS codes (4–8) can change when Cadillac launches a new platform — charts from a different decade may mislead.
- North American market VINs follow FMVSS 565; vehicles imported privately may still use the same WMI system but different catalog data.
- Always cross-check the decoded plant and engine against the door-jamb sticker before ordering expensive parts.
Decoded attributes are informational. Confirm engine, trim, and drivetrain against the window sticker, build sheet, or a dealer before purchase, insurance, or registration decisions.
Related reading: How to read a VIN, check digit explained, and verify a VIN against a listing.
Cadillac VIN Position Breakdown
| Pos. | Section | Standard Meaning | Cadillac Notes |
|---|---|---|---|
| 1 | WMI | Country of manufacture | ISO 3779 region code — e.g. 1=USA, J=Japan, W=Germany |
| 2 | WMI | Manufacturer | Combined with pos. 1–3 identifies Cadillac |
| 3 | WMI | Vehicle type | Cadillac WMI codes: 1G6 (United States), 1GY (United States) |
| 4 | VDS | Vehicle Line | Cadillac-specific model line code |
| 5 | VDS | Series | Trim, series, or drive configuration |
| 6 | VDS | Body / restraint | Body style and/or restraint system (varies by year) |
| 7 | VDS | Restraint / body | Supplemental restraint or body attribute |
| 8 | VDS | Engine | Engine family or displacement code |
| 9 | Check digit | Validation | ISO 3779 weighted-sum check — detects typos and tampering |
| 10 | VIS | Model year | Standard 30-year letter/digit cycle (1980–2039) |
| 11 | VIS | Assembly plant | Cadillac factory code |
| 12–17 | VIS | Serial number | Unique production sequence at the assembly plant |
Frequently Asked Questions — Cadillac VIN
Where do I find the VIN on a Cadillac?
Dashboard at windshield base, driver's door jamb, and on the vehicle title.
What does the WMI 1G6 mean on a Cadillac?
1G6 is a World Manufacturer Identifier used on Cadillac vehicles. 1G6 covers Cadillac cars; 1GY is commonly used for Escalade and Cadillac SUVs.
Has Cadillac VIN encoding changed over time?
Yes. Like most makers, Cadillac revises Vehicle Descriptor Section codes when platforms change. Treat older charts carefully and confirm critical attributes against the window sticker or build sheet.
Can I decode a Cadillac VIN for free on DecodeAnyVin?
Yes. Paste your 17-character Cadillac VIN into the form on this page. We validate the ISO 3779 check digit, resolve the WMI, read the model year and plant, and apply Cadillac-specific rules for positions 4–8 where available — no signup required.
Does a Cadillac VIN show the engine?
Often yes. On many Cadillac lines, position 8 (sometimes nearby VDS positions) encodes engine family. Coverage is strongest for high-volume models such as Escalade and CT4; exotic or late-cycle codes may need dealer confirmation.
How do I know a Cadillac VIN was not altered?
Run the check digit (position 9). Example structure: 1G6AA5RX30G012345. Also match the windshield VIN to the door-jamb label and reject plates that look restamped or glued. A decode cannot prove title status — only factory identity.
Is the model year on a Cadillac VIN always the calendar year?
No. Position 10 is the manufacturer's model year on the ISO 30-year cycle. A vehicle built in autumn may already carry next year's code. Use it as the factory model year, not the build calendar date.
Which Cadillac models does DecodeAnyVin support?
Any Cadillac with a standard 17-character VIN (typically 1981+), including Escalade, CT4, CT5, XT4, XT5, XT6, Lyriq. WMI and year/plant decode work broadly; detailed trim/engine depth depends on documented VDS rules for that platform.