# Service bulletin PI\-1408E

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: 10190348
- Published by NHTSA: 2021\-04\-16
- Manufacturer's number: PI\-1408E
- Manufacturer's date: 2017\-10\-01
- NHTSA component: EQUIPMENT:APPLIANCE:AIR CONDITIONER

## NHTSA's summary

Musty Odor from HVAC Vents on Startup Condition/Concern Some customers may comment on a musty or mildew odor coming from the HVAC instrument panel air outlet vents on startup. The odor most likely will dissipate after 30\-60 seconds of operation. The odor generally occurs after the vehicle has been parked for 2–6 hours with sun load with temperatures of 21°C \(70°F\) or higher. This may be caused by condensation building up on the evaporator core, which does not evaporate by itself in humid conditions. The odor may be the result of microbial growth on the evaporator core being released into the air stream by the HVAC blower motor.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10190348-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10190348-9999.pdf)

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

## Components

Equipment and accessories, Heating and air conditioning

## Vehicles listed

- 2013 to 2016 CADILLAC ATS
- 2014 to 2016 CADILLAC CTS

## Recalls for the same vehicles and component

- [15V558000](/recalls/nhtsa/15V558000.md), 2015-09-03: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

## Other bulletins for the same vehicles and component

- [PI0572B](/bulletins/10254240.md), 2024-05-06, Service bulletin: EQUIPMENT. Information on COAX Repair Kit Availability.
- [20\-NA\-132](/bulletins/10253527.md), 2024-04-23, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- [17\-NA\-052](/bulletins/10253526.md), 2024-04-23, Service bulletin: WHEELS; EQUIPMENT. This bulletin updates the position of General Motors on refinishing aluminum wheels. GM has determined that wheel refinishing under warranty will no longer be performed.
- [PIP5129B](/bulletins/10253369.md), 2024-04-22, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Engine Exchange Program for 2014 Model Year Has Ended.
- [PIC6541](/bulletins/10253078.md), 2024-04-15, Service bulletin: EQUIPMENT:ELECTRICAL. This Preliminary information communicates to the technicians some additional diagnostic tips if they encounter a condition of a dead battery/parasitic drain.
- [PIE0291A](/bulletins/10252899.md), 2024-04-08, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Engineering Information.
- [PIE0291](/bulletins/10252898.md), 2024-04-08, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Engineering Information.
- [PIC5929A](/bulletins/10252866.md), 2024-04-08, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Tire Learning Active Message On At Startup
- [PIC5929](/bulletins/10252865.md), 2024-04-08, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Tire Learning Active Message on at Startup.
- [PIC5928](/bulletins/10252864.md), 2024-04-08, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. product feedback on the new 2014 Cadillac CTS Sedan.

JSON: [/v1/bulletins/10190348](/v1/bulletins/10190348)

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