# Service bulletin 08\-231\-22

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10229806
- Published by NHTSA: 2023\-01\-17
- Manufacturer's number: 08\-231\-22
- Manufacturer's date: 2022\-12\-13
- NHTSA component: STRUCTURE; ELECTRICAL SYSTEM; EXTERIOR LIGHTING; VISIBILITY; PARKING BRAKE

## NHTSA's summary

Flash: Heating, Ventilation and Air Conditioning \(HVAC\) Module Updates This bulletin involves reprogramming the HVAC control module with the latest available software. The customer may experience a Malfunction Indicator Lamp \(MIL\) illumination with one or more of the following Diagnostic Trouble Codes \(DTCs\) or the symptom/conditions listed below: ? U1710\-86 \- Implausible Data Received From HVAC. ? U1710\-87 \- ACM \(Automatic Climate Module\) On B CAN \- Missing Message. ? The HVAC control for the air conditioning/heating outlet control, fan speed or other controls maybe inoperative after a Body Control Module \(BCM\) had been replaced. ? The rear defrost/heated mirror LED indicator on the HVAC controller does not illuminate when the button is depressed \(2014 MY only\).

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10229806-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10229806-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Body and frame, Brakes, Electrical system, Glass, wipers and mirrors, Lighting, Parking brake

## Trouble codes named

U1710

## Vehicles listed

- 2014 to 2019 RAM PROMASTER

JSON: [/v1/bulletins/10229806](/v1/bulletins/10229806)

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