# Service bulletin SF\-421\-F\-K REV

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: 10036727
- Published by NHTSA: 2011\-04\-11
- Manufacturer's number: SF\-421\-F\-K REV
- Manufacturer's date: 2011\-08\-01
- Replaces: SF\-421F\-M REV2
- NHTSA component: UNKNOWN OR OTHER

## NHTSA's summary

FREIGHTLINER: IITIATING FIELD SERVICE CAMPAIGN TO MODIFY THE VEHICLES MENTIONED. CERTAIN TRUCKS WITH EARLY PRODUCTION PARKSMART PARKED HVAC UNITS MAY NOT PERFORM OPTIMALLY UNDER ALL CONDITIONS. A RANGE OF UPDATES TO ENHANCE PARKED HVAC PERFORMANCE HAVE BEEN IMPLEMENTED SINCE THE START OF PARKSMART PRODUCTION. \*PE UPDATED 10/3/11. \*PE

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Vehicles listed

- 2008 to 2010 FREIGHTLINER CASCADIA

JSON: [/v1/bulletins/10036727](/v1/bulletins/10036727)

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