WenmarOpen by Wenmar Pro

Service bulletin SB-83-138

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10039274
Published by NHTSA2011-07-16
Manufacturer's numberSB-83-138
Manufacturer's date2011-06-01
NHTSA componentELECTRICAL SYSTEM:WIRING

NHTSA's summary

DAIMLER TRUCKS: THERE MAY BE A VOLTAGE DROP WHICH MAY CAUSE PROBLEMS WITH THE HEATER. *RM

The document

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

Components

Electrical system, Wiring and fuses

Vehicles listed
FREIGHTLINER CASCADIA2010

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
503-142018-06-18. Service bulletin. 503-14 FMI 3, 4: High Side Digital Output 3 Circuit Failed High
fp540312018-06-18. Service bulletin. fp54031 Ordering Service Wiring Harnesses for Cascadia
14CSA222017-11-17. Service bulletin. 14CSA22 DTNA Chassis Wiring Diagrams
54-2642016-09-08. Service bulletin. CASCADIA VIRTUAL TECHNICIAN RETROFIT
FSC-480-A2013-07-19. Service bulletin. DAIMLER TRUCKS: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON CERTAIN TRUCKS, BETWEEN THE QUALCOMM UNIT AND TRAILER TRACS TRANSMITTER, COMMUNICATION IS INTERMITTENT, DUE TO LACK OF RELIABLE SIGNAL STRENGTH AND A MORE ROBUST WIRING WILL BE INSTALLED TO CORRECT ISSUE. MODELS 2010-2013 CASCADIA. *PE
SB-54-2602011-08-05. Service bulletin. FREIGHTLINER: INFORMATION ON REPLACING THE MEGA FUSE JUNCTION BLOCK WITH A SERVICE VERSION POWER NET DISTRIBUTION BOX. *RM UPDATED 7/3/14. *PE
SB-54-2232010-12-13. Service bulletin. FREIGHTLINER: WIRING HARNESSES ON CERTAIN TRUCKS ARE DOCUMENTED DIFFERENTLY THAN HARNESSES ON TRUCKS. WHEN SPECIFICATION IS RELEASED FOR PRODUCTION, ALL WIRING FOR STANDARD OPTIONS ARE BUNDLED INTO HARNESSES BASED ON THEIR LOCATION IN THE TRUCKS. NO MODEL YEARS LISTED. *PE