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Nothing wastes money faster in the truck repair world than ordering the wrong part. A replacement truck bed that doesn’t bolt up. A door that’s three inches too short. A fender that misses the mounting holes by a centimeter. These errors happen regularly — and they almost always stem from one preventable mistake: not accurately identifying the part before ordering. Your truck’s manufacturer nameplates and identification labels contain everything you need to get it right the first time, every time. This guide explains exactly how to find and read them.

Where Are the Manufacturer Nameplates Located on Your Truck?

Your truck has several identification plates and labels, each serving a slightly different purpose. Knowing where each one is and what it contains turns part sourcing from guesswork into a precise science.

1. The Dashboard VIN Plate

The most universally recognized identification point is the VIN (Vehicle Identification Number) plate, located on the driver’s side dashboard and visible through the windshield from outside the vehicle. This small metal or plastic plate contains your 17-character VIN — the single most important piece of information for ordering any truck part. Every part database, cross-reference tool, and specialist supplier will ask for this number first.

2. The Driver’s Door Jamb Sticker

This is arguably the most useful sticker on your entire truck for parts ordering. Open the driver’s door and look at the edge of the door frame (the B-pillar). You will find a white or yellow sticker containing: the full 17-digit VIN, the vehicle’s GVWR (Gross Vehicle Weight Rating), the tire pressure specifications, the vehicle’s paint/color code, the production date (month and year), and often the axle ratio and transmission codes. For body parts ordering specifically, the paint code is critical if you want a color-matched panel, and the production date matters because mid-year changes within a model year can affect which parts fit.

The door jamb sticker is your most complete source of vehicle identification information for ordering body parts — it contains VIN, paint code, production date, and weight ratings.

3. The Engine Bay Identification Tags

For engine and transmission-related parts, the engine bay contains its own identification tags. On most Ford trucks, you will find an emissions decal on the underside of the hood that specifies the exact engine code and emissions specification. On GM trucks (Chevy Silverado, GMC Sierra), the RPO (Regular Production Option) code sticker in the glove box lists every factory option installed on the truck at production — this is extremely useful for identifying the exact powertrain, axle, and trim specifications needed for accurate parts matching.

4. The Axle and Transfer Case Tags

For drivetrain parts, look for metal tags bolted to the rear axle housing and the transfer case. These typically show the gear ratio, axle type, and production date — all of which affect which bearings, seals, and carrier components fit your specific drivetrain.

5. The Body Stamp

For truck body panels, an often-overlooked identification source is the body stamp — a number or code physically stamped into the metal of the body panel itself. On Ford Super Duty trucks, this is found on the firewall. On Chevy Silverado and GMC Sierra, look on the front body pillar. On Dodge Ram trucks, it is typically near the lower dash on the driver’s side. This stamp confirms the body style code and production information for the specific panel.

How to Decode Your 17-Character VIN for Parts Ordering

The VIN is not random — every character encodes specific vehicle information. For parts ordering purposes, these positions are most important:

Position 10 deserves special attention: the model year code uses letters and numbers in a specific rotating sequence (A=1980, B=1981… Y=2000, 1=2001, 2=2002… A=2010 again, and so on). Always confirm the year from Position 10 against the calendar year on the title — they occasionally differ for late-in-year manufactured vehicles that are sold as the following model year.

Reading the Door Jamb Sticker: A Field Guide

When you are standing in a parking lot trying to identify parts for a quick order, the door jamb sticker is your best friend. Here is what to look for on the most common trucks:

Ford F-150, F-250, F-350 Super Duty

Ford door jamb stickers include a “Body” code (such as “P2A” or “W2A”) that specifies cab style. The first letter typically indicates the series, the number indicates the cab/bed configuration, and the letter suffix indicates the sub-model. Your Ford dealer can decode these fully, and Apex Auto Spare Parts’ team can as well — just read the full sticker to our parts team over the phone.

Chevy Silverado / GMC Sierra

GM trucks use a model designation code that includes the series (C = 2WD, K = 4WD), the class (15 = half-ton, 25 = three-quarter-ton, 35 = one-ton), and the cab/bed style code. The RPO codes in the glove box decode every option on the truck, which is extremely useful for identifying trim-specific body parts.

Dodge Ram / Ram Trucks

Chrysler/Ram door jamb stickers include the “Sales Code” field, which lists every factory option using 3-character codes. For body parts, the key codes are the exterior color code, the cab code (Regular, Club Cab, Quad Cab, Mega Cab), and the bed length code.