I have a 2004 ram 2500 slt 5.9 automatic. Truck has ABS code 84 Vin Mismatch. ABS and Brake light are on and of course ABS does not function. No other codes in the truck at all. Every place I have called which repairs ABS modules, says they can not repair that issue. Chrysler discontinued the part. Supposedly it needs programmed. Local dealership said they can not re-program the ABS module.

 

I have read you can swap it out with one from another truck as long as the part number is the same. I pulled one out of a truck my neighbor has and the part number is the same. Issue is still present.

 

Anyone have any input on how to resolve this issue? Checking wiring diagrams, does anyone know which wire the module uses to pass information to the ECM? Or if they even communicate to each other to verify VIN?

 

Any and all help would be greatly appreciated!

Thanks

 

 

You could try Module Masters in Moscow, ID they do ABS module repairs and programming. 

https://modulemaster.com/rebuilds/

 

Then you could try Auto Computer Specialist in Florida they also do module repairs and flashing. 

https://autocomputerspecialist.com/

Hello,

 

Wondering if your issue ever got resolved. I have the exact same truck. ABS and brake light come on intermittently. ABS scan brought up numerous codes including code 84. Sent the control module to Module Repair Pro and he said the codes were likely only being caused by vin mismatch so he refunded my money and recommended getting a new module from the dealer. Found out the module is discontinued. Dealer tells me these old modules cannot be flashed to new vehicles.

 

Found a rebuilt unit with matching part number. Scared to pull the trigger and end up having the same ID mismatch issue. Can these be flashed with new vin once rebuilt?

 

Any help is appreciated. Thank you.