Loading... Please wait...
  • FAQ

CPC4 Module Exchange

  • CPC4 Module Replacement Exchange
  • CPC4 Module Exchange Service
1-business day turnaround service


  1. How This Works
  2. Instructional Information
  3. Part Numbers
  4. Warranty
  5. Reviews

Product Description

This CPC4 exchange service provides a replacement CPC4 module, which is pre-programmed to the latest OEM configuration for your vehicle based on your VIN. This CPC4 will be ready to install and use immediately without costly additional programming. Our CPC4 units are remanufactured with upgraded materials using state-of-the-art equipment to provide modules that are better than new.

This exchange service is for the following trucks:

  • 2014-2019 Freightliner Cascadia
  • 2013+ Freightliner 122SD
  • 2013+ Freightliner M2
  • 2013+ Thomas Bus
  • 2013+ Western Star 4700/4800/4900/6900
  • 2013+ Oshkosh, Terex, and Pierce trucks with Detroit Diesel Engines

CPC4 Core Exchange Requirements

Due to the limited availability of CPC4s, timely return of repairable core is essential to continuing our exchange program and serving the next customer. In order to exchange your original CPC4, your existing unit must meet the following qualifications:

  • No fire damage
  • No flood damage
  • Your core must be an original CPC4 with one of these part numbers: A0034461002, A0034461102, A0034461202, A0034461302
  • If a repair has already been attempted, we will evaluate any damage to determine if your core is viable. We understand that some of our customers have tried alternatives for repair that have been unsuccessful. CPC4s damaged beyond repair will not be accepted. If you have questions about the acceptability of your unit or our repair option, please call our customer support team 800-547-2049 to discuss all your options.
  • If Circuit Board Medics does not receive your original CPC4 (core) within 7 days of delivery, the core refund will be reduced by $100 for each day after.

CPC4 Exchange Process

  1. Fill out the required fields above.
  2. Select the correct part number for your vehicle, 1002 or 1102.
  3. Upon submitting your order, you will receive an email with further instructions.
  4. Your CPC4 Exchange will be shipped free overnight to you.
  5. Once you install our exchange CPC4 in your truck, send your broken CPC4 back to us. Be sure to package the CPC4 with a few inches of packing material on all sides. 

Order your exchange CPC4 today by clicking the "Place your Exchange Order" button above and proceed through the checkout process. Please text or call us at 800-547-2049 if you have any questions. 

If you are looking for a repair option, please see our CPC Module Repair listing.  

Wondering How This Exchange Service Works?

At Circuit Board Medics, our focus is on excellent communication, fast turnaround, and quality replacements. One key to achieving these goals is ensuring that we have customers' contact information and payment before beginning any exchange order. Watch our video to learn more about how our exchange process works and how we can help to get your vehicle or appliance back up and running quickly. Disclaimer: We are not responsible for lost, delayed, or non-repaired items shipped to our facility without an order number.

Removal Instructions



Our no-hassle warranty covers your repair for a full three years. If the repair fails anytime within three years, we will repair the item again. In the rare occasion that the item is not repairable, we will either replace the circuit board entirely or refund the cost of the repair, at our discretion. See Details...

Product Reviews