This bulletin applies to 2013-2015 Ram trucks equipped with an Upfitter Electronic Module. The vehicle system interface module may be unresponsive.
Customers may notice uplift components connected to the VSIM inoperative, at times. This is caused by a condition where the VSIM locks up and becomes unresponsive. No DTCs will be reported for loss of communication between the VSIM and Central Body Controller (CBC). This can be corrected by updating the VSIM with the latest available software.
Use wiTECH to check if the VSIM is active on the Bus.
If active, proceed to Step 8. If not active, proceed to Step 3.
Lower the VSIM and disconnect the connector to reset the module.
The VSIM is located under the dash next to the park brake pedal.
Press up on the module release tab and lower the VSIM. Disconnect the VSIM connector for 30 seconds.
Reconnect the VSIM and return it to the mounting bracket.
If the VSIM is active on the Bus, proceed to Step 8. If not, this bulletin does not apply. Perform diagnostics for no response from VSIM.
Reprogram the VSIM with the latest software.
