Someone found the full TSB.
It's a gut/replace of the HVAC box, a cable, and some extra parts (foam tape).
7 hour job on a Diesel.
REPAIR PROCEDURE:
NOTE: The floor ducts will need to be removed for ease of removal and assembly.
NOTE: Record the radio presets prior to this repair so they can be programmed back in for
the customer after the repair is performed.
1. Remove the HVAC housing. Refer to the detailed service procedures available in
DealerConnect> Service Library under: Service Info>24 Heating
and Air Conditioning /
Distribution / Housing, HVAC / Removal.
2. Disassemble and reassemble the HVAC heater housing, Distribution housing, wire harness, and
HVAC module with the updated parts from the service kits (follow the parts table on which
parts are needed for the vehicle being repaired). Refer to the detailed service procedures
available in DealerConnect> Service Library under: Service Info>24 Heating
and Air
Conditioning / Distribution / Housing, HVAC / Disassembly and Assembly.
NOTE: Reuse the original air inlets, heater core, and ducts. A new wire harness is needed
for dual zone units only.
NOTE: The original heater core will need to be transferred to the new heater housing and
foam tape added per Isheet
provided if not already present. The new housing
includes a new evaporator and all other seals needed.
3. Transfer the Diesel PTC heater unit (if applicable).
4. Transfer the HVAC control module. Refer to the detailed service procedures available in
DealerConnect> Service Library under: Service Info>08 Electrical
/ 8E Electronic
Control
Modules / Module, HVAC / Removal and Installation.
• This may also require replacement and proper routines to be performed.
5. Install the HVAC housing. Refer to the detailed service procedures available in DealerConnect>
Service Library under: Service Info>24 Heating
and Air Conditioning / Distribution / Housing,
HVAC / Installation.
6. Program the customer preset radio stations that were recorded prior to start of the procedure.