Chevy VIN Decoder: Free Silverado, Tahoe & Camaro Lookup

GM is the one US maker whose VINs hand you an engine code you can look up: on gas and diesel Chevrolets the eighth character maps to a specific engine, and NHTSA's vPIC database usually returns GM's three-character RPO code with it, such as L84 or L5P. Enter a Chevy VIN above and the decoder reads GM's own filing for that model year. The tables below are the ones we checked against vPIC for the Silverado, Tahoe, Suburban, Camaro, Corvette and Equinox, so you can read a Chevy VIN by hand when the seller sends you a photo instead of a link.

Chevy WMI list: 1G1, 1GC, 1GN and the rest

Chevrolets are built in the US, Canada, Mexico and South Korea, so the first character varies even within one model line. The second and third characters split cars, trucks and SUVs.

A Silverado that starts with 3GC came from Silao, Mexico. That is normal and does not mean it is a lesser truck. A Tahoe that starts with anything other than 1GN is worth a question, because Arlington, Texas, builds all of them.

Position 8 engine codes: Silverado 1500 and HD

Positions 4 through 7 encode the carline, series, body style, cab, drive and restraint system, and GM changes how they are used between model families and generations. The decoder reads GM's filing for the model year rather than a fixed chart. Position 8 is the character worth memorising. These are the codes vPIC returns for the 2022 Silverado 1500 (1GCUYDE…):

For 2023, vPIC lists 8 as the updated 3.0L Duramax (LZ0). On Silverado HD trucks, Y is the 6.6L Duramax diesel (L5P) and 7 is the 6.6L gas V8 (L8T). Engine codes are reused across years and models, so read them only together with the WMI and the year letter. The 5.3L V8 with D (L84) has dynamic fuel management and the one with F (L82) does not, which is a question Silverado buyers ask more than any other.

Chevrolet plant codes in position 11

Plant codes depend on the WMI. vPIC lists F as Flint for trucks but Fairfax, Kansas, for cars such as the Malibu. A 1 with a 2GC WMI points to Oshawa, Ontario, which builds Silverado HD trucks, rather than Wentzville. Read position 11 together with positions 1 to 3.

Position 10 letter to Chevy generation

The model-year letter in position 10 tells you more than the year once you know when each Chevrolet changed generation. Use this table to catch a listing that calls a last-year-of-the-old-body truck "the new one".

Letters B, C, H and P fall between the rows shown and carry the same generation as the row above them. Letters repeat every 30 years, so on cars, SUVs and light trucks position 7 is a letter for 2010-and-later models and a number for 1980 to 2009. The year letter is not the build date. The door-jamb certification label carries the month and year the truck was built, and our manufacturing date guide explains the difference.

Worked example: decoding a Silverado VIN

Illustrative only: 1GCUYDED7NZ100001 is a made-up VIN with a valid check digit. It does not identify a real truck.

vPIC labels this sample "Silverado LTD". For 2022, Chevrolet sold the outgoing Silverado 1500 as the Limited alongside the refreshed truck, so the model name tells you which cab you are looking at. That is exactly the kind of detail a seller's listing blurs, and the table above is how you catch it.

The Service Parts label: Chevy's free build sheet

Chevrolet trucks and SUVs carry a Service Parts Identification label, usually in the glove box or on the underside of the center console lid. It lists the VIN with every three-character regular production option (RPO) code built into the vehicle: engine, axle ratio, trailering package, paint, suspension. It is the closest thing to a free build sheet and it answers the questions the VIN cannot:

• Z71, Trail Boss, Max Trailering and similar packages are RPO codes on the label, not VIN characters.
• Axle ratio appears as a G code, such as GU6 for 3.42.
• Paint appears as a WA code. Our paint code by VIN guide shows where to read it.

If the label is missing or the codes do not match the decode, ask why before you negotiate. The myChevrolet app shows the VIN for connected vehicles, and the original window sticker by VIN lists the options in plain English.

Chevy recalls and history

The decode result above lists the safety recalls NHTSA has on file for that Chevrolet model and year. To see whether one is still open on this exact truck, run the VIN through NHTSA's recall lookup. Chevrolet's owner site adds GM's own customer satisfaction programs, which NHTSA does not list. Recall repairs are free at any Chevrolet dealer, whoever owns the vehicle.

Ownership, accidents, title brands and odometer readings are not in the VIN. Our vehicle history check guide covers those records, and the free VIN check guide separates the free checks from the paid ones.

Cross-shopping a Ford? The Ford VIN decoder uses a different engine-code table and different plant letters, so do not carry GM's over.