I'm sorry to hear about the odor you're experiencing. In some cases an odor make develop in areas with high humidity and condensation. When did you first notice the smell, is it more prevalent in warmer weather?
Is your vehicle equipped with a cabin air filter? If so check that first. Theres also an A/C Cooling Coil Cleaner available, 8 oz. Bottle Mopar Part#05170022AA you can use to clear up certain odors.
The only bulletin remotely related to an HVAC odor is listed below:
A/C Cooling Coil Odor
This bulletin involves inspecting for leaves and other foreign material, cleaning, and treating the cooling coil and housing.
Some vehicle operators may experience a musty odor from the A/C system, primarily at start up in hot and humid climates. This odor may be the result of microbial growth on the cooling coil. During normal A/C system operation, condensation forms in and around the A/C cooling coil. When airborne pollutants mix with this condensation, bacteria and fungi growth begins and odor results.