Bulletin 54-088 ⇒

: After installation, specific tests must be conducted to ensure the new cluster communicates correctly with the vehicle's Engine Control Unit (ECU). Impact on Fleet Maintenance

This bulletin is not a simple "plug-and-play" instruction manual. It involves complex technical steps, including: bulletin 54-088

Owners of models such as the , Cascadia , and Business Class M2 should regularly check the NHTSA Service Bulletin Database to see if their Vehicle Identification Number (VIN) is affected by this or similar campaigns. ICU2M to ICU4M Conversion - nhtsa : After installation, specific tests must be conducted