Mileage Blocker for Ram 1500, 2500 HD and TRX: Which Version Fits Your Truck

Ram trucks have a loyal following in the off-road and tuning world, and the 2026 catalogue update adds the Ram 2500 Heavy Duty alongside the existing Ram 1500 and ProMaster. Here is how to pick the right one.

Ram 1500 (2015–2026)

One listing covers every Ram 1500 from 2015 to the current truck, including the TRX. Two choices decide the harness you receive:

• Build date / CAN-bus type — trucks built up to April 2024 use the regular CAN-bus version; trucks built from April 2024 use the CAN-FD version, which costs more.
• Speedometer type — analogue cluster (20-pin brown connector) or fully digital LCD cluster (18-pin black connector). Pull the cluster plug or send us a photo if you are not sure.

Ram 2500 / 3500 / 4500 / 5500 Heavy Duty (2015–2026)

New to the range. One listing covers the 2500, 3500, 4500 and 5500 Heavy Duty trucks from 2015 onwards, with the same two choices as the 1500: build date (regular CAN-bus up to April 2024, CAN-FD from April 2024) and speedometer type (analogue 20-pin brown or digital 18-pin black connector).

Ram ProMaster (2014–2026)

The full-size van is popular with fleet operators and van-life builders who spend long periods stationary or running on generators. The ProMaster listing has two versions: 2014–2022 and the 2023-on facelift.

Dodge muscle and SUV

The same module family covers the Challenger and Charger (2015–2023, including Hellcat) and the Durango (2014–2026). See the Dodge & Ram category for all six.

Installation on Ram trucks

The cluster on the DT and HD trucks comes out after removing the upper dash bezel; allow 30–45 minutes. The harness connects in line with the cluster plug — no cutting, no coding. Because the Ram dash is deep, we recommend the extended cable with quick-release (+$89) if you plan to remove the device between off-road trips.

Operating modes

Ram and Dodge modules offer a 0% mode (nothing recorded), a 10% mode and a third setting that switches the device off, selected by flashing the high beams four or five times. The mode is retained between ignition cycles and the speedometer reads normally throughout. Full details are on each product page.

Does a Ram need the OBD2 eraser?

No — Stellantis platforms do not log a code when the mileage signal is filtered, so the eraser option is not offered on Ram or Dodge listings.

Pricing

Ram 1500 and Heavy Duty blockers both start from $599 for the regular CAN-bus version; the product page shows a “From” price that updates to the exact figure once you choose your build date, cluster type and cable.

Frequently asked questions

How do I know whether my truck is CAN-FD?

Trucks built from April 2024 are CAN-FD. The build date is on the door-jamb label; if your truck was built close to the changeover, send us the VIN and we will confirm.

Which connector is on my cluster?

Analogue clusters use a 20-pin brown connector; the fully digital LCD clusters use an 18-pin black connector. A photo of the back of the cluster settles it.

Does the TRX need a different version?

The TRX is covered by the Ram 1500 listing; choose by build date and cluster type like any other 1500.

Is coding required on the 12-inch Uconnect trucks?

No. The harness plugs in line behind the cluster and no coding is needed on any Ram version.

Mileage blockers sold by Mileage Blocker USA are intended for off-road, motorsport, dyno testing and vehicle-development use. They must not be used to alter the recorded mileage of a vehicle that is offered for sale. Federal law (49 U.S.C. §32703) prohibits odometer tampering with intent to defraud, and state laws add further penalties. Please make sure your use is lawful where you are.