WenmarOpen by Wenmar Pro

Service bulletin 26-031

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 id10143646
Published by NHTSA2018-08-13
Manufacturer's number26-031
Manufacturer's date2018-07-06
NHTSA componentPOWER TRAIN

NHTSA's summary

Non-Safety Campaign - Chassis with Eaton Manual or Ultrashift transmissions may experience loosening of the bellhousing bolts.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
PETERBILT 3372016, 2017
PETERBILT 3482016, 2017
PETERBILT 3652016, 2017
PETERBILT 3672016, 2017
PETERBILT 3892016, 2017
PETERBILT 5202017
PETERBILT 5672016, 2017
PETERBILT 5792016, 2017

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

Recalls for the same vehicles and component
18V0920002018-02-02. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)
16V0660002016-02-05. POWER TRAIN:AXLE ASSEMBLY
15V6390002015-10-09. POWER TRAIN:MANUAL TRANSMISSION

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
T016 / 26-0402025-06-05. Service bulletin. T016: Warranty section updated to include 0.5 hours for test drive. Recommended Repair T016C has been updated from 6.4 hours to 6.9 hours. SRT codes updated in PRWS Claim Coding Table: B25-17A for 6.9 hours created to replace all other codes. 26-040: Warranty section updated to include 0.5 hours for test drive. Recommended Repair 26040C has been updated from 6.4 hours to 6.9 hours. SRT codes updated in PRWS Claim Coding Table: B25-17A for 6.9 hours created to replace all other codes.
02-1942024-12-02. Service bulletin. Fix-As-Fail The window switch fails prematurely due to excessive amperage flowing through the window switch circuit. A new door harness design has been developed to prevent failures. Fix-As-Fail start date is 11/11/2024.
7-7002024-11-05. Warranty extension. 7/700 Service Agreement - Letter Only.
23-0052022-11-04. Service bulletin. Clutch pedal linkage lubrication service interval information is missing from the Service manual for Model 365, 367, and 389 chassis.
26-0382022-01-06. Service bulletin. Non-Safety Campaign: Eaton Endurant transmissions may experience premature Main Drive Gear damage due to clutch housing and main case countershaft bearing bore wear. A Clutch Housing Front Cover Kit will be installed to address the issue.
26-0372021-01-06. Service bulletin. Fix-As-Fail - Prior versions of Eaton Endurant transmission software may be prone to setting Linear Clutch Actuator (LCA) fault codes leading to possible LCA hardware replacement.
26-0352021-01-06. Service bulletin. Non-safety campaign: Vehicles equipped with an Eaton Endurant 12 speed transmission may experience transmission service lamp activation, no gear engagement from neutral, and/or DTC 511 FMI 7 or 10 is set. Resolution is to update the transmission software and calibrations.
T0112021-01-06. Service bulletin. Fix-As-Fail - Prior versions of PACCAR transmission software may be prone to setting Linear Clutch Actuator (LCA) fault codes leading to possible LCA hardware replacement.
11-0012020-06-02. Service bulletin. Information only: Hendrickson Softek front axle maintenance intervals and requirements.
TT81362018-04-16. Service bulletin. Tip for technicians to avoid a conflict with the engine controller when re-programming the transmission