Ram 2500 VIN Decoder

Decode any Ram 2500 VIN free in seconds. Enter the 17-character vehicle identification number into the decoder above and get the generation, model year, engine, cab configuration, GVWR class, plant of origin, and open NHTSA recalls, no sign-up required.

This page goes deeper than the general Ram hub. Below you’ll find the chassis codes the 2500 actually carries across four decades of production, the WMI and plant codes tied to the Saltillo, Mexico truck plant, a per-generation engine code table (including where the 6.7L Cummins turbo-diesel shows up at position 8), and the recalls specific to the heavy-duty truck rather than the 1500.

About the Ram 2500

The Ram 2500 is the 3/4-ton member of Stellantis’ heavy-duty pickup lineup, built for towing and plowing as much as daily driving. It shares showroom space with the 1500 but not the same internal chassis code family, and that family has changed less often than most owners assume.

Generation	Years	Chassis code	Notes
2nd (no official nickname)	1994-2002	BR (Regular Cab) / BE (Club Cab)	Body-on-frame HD; introduced the 5.9L Cummins I6 diesel option
3rd	2003-2009	DR (2003-2007 production) / DH (2008-2009 production)	NHTSA’s own VIN database splits this generation into two internal codes, roughly matching the mid-cycle switch from the 5.9L to the 6.7L Cummins
4th	2010-2018	DJ	New HD frame and cab; last of the Dodge-badged 2500s before the Ram brand split off for MY2011
5th (Heavy Duty)	2019-present	DJ	New frame, cab, and interior, but Chrysler kept the same DJ body code it had used since 2010

That last row is worth flagging: unlike the 1500, whose chassis code changed from DS to DT for its 2019 redesign, the 2500’s “5th generation Heavy Duty” kept the DJ code it had carried since 2010. We confirmed this directly by decoding a checksum-valid 2023 Ram 2500 Laramie 4×4 Cummins VIN through the NHTSA vPIC API; it returns “Series: DJ,” identical to a 2016 model. Don’t assume an HD truck’s chassis code tracks the 1500’s redesign calendar.

Ram 2500 WMI codes (positions 1-3)

The World Manufacturer Identifier tells you who built the truck and, roughly, where. These are the WMIs confirmed on real and constructed Ram 2500 VINs decoded through NHTSA vPIC:

WMI	Country	Registered manufacturer	Years / notes
3C6	Mexico	Chrysler de Mexico Toluca	MY2011-present, all current Ram-badged 2500 pickups
3D7	Mexico	Chrysler de Mexico Toluca	1994-2010, Dodge-badged 2500 (before the Ram brand split)
1D7	USA	FCA US LLC	1994-2009, US-built Dodge-badged 2500 (Fenton, Missouri plant)

Two notes. First, the WMI’s registered manufacturer name says “Toluca,” but every 2500 we decoded, from a 1998 truck through a 2022 truck, actually came out of Saltillo (one 1998 example came from Mexico City). The WMI records the corporate registration, not the specific factory; position 11 does that job, covered below. Second, there’s no US-built WMI for a modern 2500. The 1500 is built in Michigan; the 2500 and up come exclusively from Saltillo, so every current 2500 VIN starts with 3C6, never 1C6.

How to decode a Ram 2500 VIN, position by position

Positions 1-3: World Manufacturer Identifier

Covered above. A 2500 VIN starting with anything other than 3C6, 3D7, or 1D7 is either a different Stellantis product or worth double-checking with the decoder above.

Position 4: Brake system and GVWR class

Position 4 encodes gross vehicle weight rating combined with brake and restraint system, all hydraulic-braked on the 2500. Real 2500 VINs we decoded return “U” (9,001-10,000 lb GVWR) most often, with heavier Cummins/Crew Cab builds landing on “3” (10,001-14,000 lb). It’s the same GVWR-and-restraint code table FCA uses across its whole truck and MPV lineup, not something unique to the 2500.

Positions 5-7: Model line, cab, and drivetrain

This block spells out the model, cab style (Regular, Crew, or Mega Cab), wheelbase, drive wheels (2WD or 4WD), and trim series. On a DJ-era truck, “R5K” reads as a 4×4 Crew Cab, long wheelbase, Laramie; “R5P” reads as a 4×4 Mega Cab Longhorn. You don’t need to memorize the sub-codes; the decoder above reads them for you.

Position 8: Engine code

This is where the 2500’s VIN departs from a simple “one letter, one engine” chart. FCA reuses position-8 characters across generations for different engines: the letter “6” decodes to the 24-valve 5.9L Cummins ISB diesel on a checksum-valid 1998 VIN, but to the 5.7L HEMI gas V8 on a 2006 VIN, both verified through vPIC. Match the code to the generation, not just the letter.
2nd generation (1994-2002):

Code	Engine	Notes
Y	5.2L Magnum V8, gas	Base V8
Z	5.9L Magnum V8, gas	Upgraded gas V8
W	8.0L Magnum V10, gas	Top gas engine
C / D	5.9L Cummins I6 diesel, 12-valve	1994-1998, mechanical P7100 injection pump
6	5.9L Cummins I6 diesel, 24-valve (ISB)	1998.5-2002, electronic VP44 pump

3rd generation (2003-2009):

Code	Engine	Notes
6	5.7L HEMI V8, gas	Replaced the old Magnum gas V8s
C / D	5.9L Cummins I6 diesel, common-rail	2003-2007
A / L	6.7L Cummins I6 diesel	Introduced mid-2007 (“2007.5”); the code varies by output and transmission pairing

4th and 5th generation, DJ (2010-present):

Code	Engine	Notes
T	5.7L HEMI V8, gas	Base gas engine
J	6.4L HEMI V8, gas	High-output gas, standard on Power Wagon and other HO builds
L	6.7L Cummins I6 turbo-diesel	The 2500’s signature engine; stable at “L” since 2010, verified across 2016, 2021, and 2022 VINs

Position 9: Check digit

Calculated from the other 16 characters through a fixed weighting formula and modulo-11 math (specified in 49 CFR Part 565). Change one character anywhere in a real Ram 2500 VIN and the check digit stops matching; that’s how NHTSA, DMVs, and this decoder catch typos and cloned plates.

Position 10: Model year

Ram uses the same 30-year-cycle year code across its whole lineup. Use this table for any Ram VIN, 2500 included:

Char	Year	Char	Year
R	2024	A	2010
S	2025	9	2009
T	2026	8	2008
V	2027	7	2007
W	2028	6	2006
X	2029	5	2005
Y	2030	4	2004
1	2031	3	2003
2	2032	2	2002
3	2033	1	2001

The letters I, O, and Q are never used, since they can be misread as 1 and 0.

Position 11: Assembly plant

Every 2500 VIN we decoded, from 1998 to 2023, pointed to one of three plants:

Code	Plant	Years / notes
G	Saltillo Truck Assembly, Coahuila, Mexico	The 2500’s plant today, confirmed on every DJ-era VIN and most pre-DJ VINs back to the late 1990s
J	Fenton (St. Louis) Assembly, Missouri, USA	US-built 2500s through the plant’s 2009 closure
M	Mexico City, Mexico	Some Mexico-built 2500s in the mid-to-late 1990s, before Saltillo took over as the dedicated HD plant

Positions 12-17: Serial number

The production sequence number for that specific truck, unique within its plant, model year, and assembly line.

Ram 2500 trim levels by generation

• 2nd gen (1994-2002): base, SLT, Laramie SLT
• 3rd gen (2003-2009): ST, SLT, Laramie, plus Power Wagon returning as a 2500-only trim starting in 2005
• 4th gen (2010-2018): ST, SLT/Big Horn, Outdoorsman, Laramie, Laramie Longhorn, Power Wagon, Limited on later years
• 5th gen (2019-present): Tradesman, Big Horn, Power Wagon, Laramie, Laramie Longhorn, Limited, Limited Longhorn

The VIN doesn’t spell out the trim name directly; the decoder above reconstructs it from the positions 5-7 series code plus the build sheet.

Where to find the VIN on a Ram 2500

• Lower-left corner of the windshield, visible from outside the truck
• Driver’s side door jamb sticker (VIN, GVWR, tire, paint, and trim codes)
• Stamped on the frame rail near the front suspension, visible from underneath
• Vehicle title, registration, and the Mopar owner portal

The frame-rail stamp matters more on a 2500 than on most passenger cars: these trucks get bed swaps, flatbed conversions, and cab-and-chassis rebuilds more often than lighter trucks, so a mismatched frame stamp versus door-jamb VIN is a real red flag before buying a used HD truck.

Ram 2500 recalls and safety

The 2500 has carried several recall campaigns distinct from the 1500, tied to its heavier steering and driveline components:

1. Tie rod ball joint fracture (2500/3500/4500/5500, various model years): the left tie rod ball stud could fracture under load, risking loss of steering control; Chrysler recalled affected trucks starting in 2011 and again in 2013.
2. Steering drag link separation (2014-2016 2500, 2013-2016 3500): an outboard jam nut on the steering linkage could loosen and separate, recalled under NHTSA campaign 19V-021 in 2019.
3. Transmission fluid fire risk (2020-2022 2500/3500 with the 6.7L Cummins and 68RFE transmission): a fluid leak could spray the hot exhaust manifold; roughly 248,000 trucks recalled.
4. Intake heater-grid relay fire risk (2021-2023 2500/3500/4500/5500 with the 6.7L Cummins): overheating relays posed a fire risk; roughly 306,000 trucks recalled.

To check your specific truck:

1. Decode the VIN with the tool above to confirm model, generation, and engine
2. Cross-reference the 17-character VIN with the Mopar recall lookup (US) and NHTSA
3. Contact your nearest Ram dealer for any open campaign repair, free of charge regardless of age or ownership history

Frequently asked questions

How do I decode a Ram 2500 VIN?

Type the 17-character VIN from the windshield, door jamb, or title into the decoder at the top of this page. Results return in seconds and include generation, model year, cab and drivetrain configuration, engine, GVWR class, plant of origin, and open NHTSA recalls.

Where is the VIN on a Ram 2500?

The lower-left corner of the windshield and the driver-side door jamb sticker are the two federally required locations. The frame rail near the front suspension also carries a physical stamp, useful for verifying a truck that’s had bodywork or a bed swap.

What does a Ram 2500 VIN starting with 3C6 mean?

3C6 is the WMI for Mexico-built Ram trucks registered under Chrysler de Mexico’s Toluca entity. Every 2500 built since Ram became its own brand in MY2011 carries this code, and every one we decoded actually came from the Saltillo Truck Assembly plant (position 11 code “G”), not Toluca; the WMI records the corporate registration, and position 11 pins the actual factory.

How do I tell which generation my 2500 is from the VIN?

Positions 5-7 carry the model and series information a full decode reconstructs into a chassis code. DJ covers both the 2010-2018 and 2019-present trucks; DH or DR (depending on exact model year) covers 2003-2009; BR or BE covers 1994-2002. The 10th character then confirms the exact model year within that range.

What does position 8 tell me about my Ram 2500’s engine?

It identifies the factory-installed engine, but the letter-to-engine mapping changes across generations, so match the code to your truck’s era using the tables above. On a 2010-and-newer DJ-era 2500, “L” means the 6.7L Cummins turbo-diesel, “J” means the 6.4L HEMI, and “T” means the 5.7L HEMI.

Can a Ram 2500 VIN be faked?

The characters can be retyped on a counterfeit plate, but the check digit at position 9 catches most single-character changes through math, and the frame-rail stamp is physically tied to the original truck. If the windshield and door-jamb VINs match but the frame stamp doesn’t, treat the truck as cloned. Our guide how to check if a car is stolen by VIN walks through the next steps.

Decode any Ram 2500 VIN free

Type your 17-character Ram 2500 VIN into the decoder at the top of this page for a full breakdown. To go deeper into VIN structure or check other Ram models:

• Ram VIN decoder hub for the brand-wide guide
• How to read a VIN number
• What every character in a VIN means
• Classic car VIN decoder (pre-1981)
• VIN decoder vs. vehicle history report