How to Read a Window Sticker: A GM Walkthrough

Read a window sticker in the order it was designed for: confirm the vehicle in the header, scan the standard equipment to understand the trim, then read the options list line by line, because that is where one vehicle differs from another of the same model. Finish with the price math and the government sections on fuel economy, safety and parts content. GM labels for Chevrolet, Buick, GMC and Cadillac follow this pattern, although the layout has changed over the model years, most visibly in the fuel economy section. One distinction matters throughout: standard equipment came with the trim, while each priced line in the options list was ordered on top of it.

Identify the vehicle and its trim

Match the header to the vehicle

The top of a GM sticker identifies the vehicle: model year, model and trim, body and drive configuration, exterior color, interior color and material, engine and transmission, plus the 17-character VIN. Before reading anything else, compare that VIN with the one on the vehicle. A sticker that belongs to a different VIN tells you nothing about the car in front of you. If you're not sure where the VIN plate is, find your VIN shows the usual locations on GM vehicles.

Colors on the sticker use marketing names such as Summit White rather than paint codes. The paint code itself lives in the factory build record.

Read standard equipment as a description of the trim

The standard equipment list covers everything included in the base price of that model and trim, usually grouped under headings such as mechanical, exterior, interior, and safety or technology. Nothing here is priced individually. Vehicles of the same model, trim and year largely share this list, so it describes the trim rather than this particular vehicle.

Use it to settle questions about whether a feature was an upgrade. If a seller advertises something as an option and it appears under standard equipment, that trim came with it. If a feature appears in neither the standard list nor the options list, there's a good chance it wasn't installed at the factory, so ask whether it was added later by a dealer or an owner.

Read the options list line by line

Each line in the options list names a factory option or package and gives its suggested retail price at the time. Package lines are usually followed by the items they include, without separate prices. This is where an engine upgrade, a trailering or off-road package, or a seating and technology upgrade shows up.

Most GM option lines are written in plain language, but some package names contain the RPO code GM uses internally, and Z71 on trucks and SUVs is the familiar example. Recognizing a few codes helps you connect a sticker line to a build sheet or a parts catalog:

CodeTypical meaning on GM vehicles
Z71Off-road package on trucks and SUVs
G80Automatic locking rear differential
NHTMax Trailering Package on light-duty pickups such as the Silverado 1500
JL1Integrated trailer brake controller
GU6 / GT4 / GT53.42 / 3.73 / 4.10 rear axle ratio on many GM trucks
L866.2L V8 in mid-2010s GM trucks and SUVs

Code meanings vary by model and year. Look up other codes in the RPO code navigator.

Watch for lines marked LPO. GM uses that label for factory-approved accessories installed at the port or by the dealer, such as all-weather floor liners or a wheel lock kit. They are genuine GM accessories and carry a price on the sticker, but they were typically fitted after assembly rather than on the production line.

Check the price math

  1. Base price: the MSRP of the model and trim with standard equipment only.
  2. Options: each priced line from the options list. Their sum shows how heavily the vehicle was optioned, which is useful when comparing two used examples of the same trim.
  3. Destination charge: the transportation charge from the plant to the dealer. It is typically the same for a given model nationwide, regardless of how far the dealer is from the plant.
  4. Total: base price plus options plus destination, the total suggested retail price.

These are suggested prices from when the vehicle was new. They don't include taxes, registration, dealer fees, discounts or anything on a dealer addendum, and they aren't a guide to what the vehicle is worth today.

Read the fuel economy, safety and parts-content sections

  • Fuel economy and environment: EPA city, highway and combined mpg, an estimated annual fuel cost, and greenhouse gas and smog ratings on a 1-to-10 scale. Electric models such as the Chevrolet Bolt EV or Cadillac Lyriq show MPGe and driving range instead. Heavy-duty pickups such as the Silverado HD and Sierra HD generally have no EPA rating, so this section is usually missing from their stickers.
  • Government safety ratings: star ratings for frontal crash, side crash and rollover, plus an overall rating. "Not Rated" means the model wasn't tested in that category, not that it failed.
  • Parts content: the percentage of U.S. and Canadian parts, the final assembly point, and the country of origin of the engine and transmission. The assembly plant listed here should agree with the plant code in the 11th character of the VIN.

Mistakes to avoid

  • Treating a dealer addendum as part of the factory label. Only the Monroney label shows factory equipment and MSRP; the addendum lists what the dealer added or charged.
  • Assuming the vehicle still has everything on the sticker. Wheels, bed covers and electronics get swapped. The sticker shows how the vehicle was shipped, not its current condition.
  • Counting package contents as separate options. Items listed under a package line came with that package and weren't priced on their own.
  • Expecting a sticker for every brand. For Chrysler, Jeep, Dodge, Ram, Fiat and Alfa Romeo, this site returns a factory build sheet instead of an original sticker, and it doesn't include MSRP.

Pulling up a GM sticker by VIN

For Chevrolet, Buick, GMC and Cadillac vehicles, the VIN lookup opens the original window sticker as a downloadable PDF when one is available. When there is no sticker, it shows the RPO build sheet if that record exists: the factory codes and descriptions, without prices or the EPA and safety sections. Some VINs return neither. Window sticker vs. build sheet explains what each document can and can't tell you.