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Service bulletin 26-035

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 id10185189
Published by NHTSA2021-01-06
Manufacturer's number26-035
Manufacturer's date2020-12-18
NHTSA componentPOWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT

NHTSA's summary

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.

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

Equipment and accessories, Transmission and driveline

Vehicles listed
KENWORTH T6802017, 2018, 2019
KENWORTH T8802017, 2018, 2019
KENWORTH W9902019
PETERBILT 5672017, 2018, 2019, 2020, 2021
PETERBILT 5792017, 2018, 2019, 2020, 2021

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

Recalls for the same vehicles and component
24V1900002024-03-20. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT
20241612024-03-08. Powertrain
20210692021-02-17. Powertrain
20V5060002020-08-26. POWER TRAIN:AXLE ASSEMBLY
19V9110002019-12-19. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT; POWER TRAIN:DRIVELINE:DRIVESHAFT
20187392018-12-24. Powertrain
18V9310002018-12-21. POWER TRAIN:CLUTCH ASSEMBLY
18V0920002018-02-02. ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL)
20176642017-12-28. Powertrain
17V8400002017-12-22. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM)

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
26-0352026-07-21. Service bulletin. Updated Eaton's TAIB0885EN Bulletin link.
CE0302026-06-25. Warranty extension. "KW & PB 14 fuel injector part numbers (seven for MX-11 and seven for MX-13 engines) have been added to this warranty policy."
24PBE2025-12-05. Service campaign. The right-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between the right-hand shift stalk and the vehicle may result in the vehicle being disabled after it comes to a stop, thereby increasing the risk of crash or injury. A warning will appear on the dash display when communication is lost, including transmission or engine warnings, “!” next to DNR/DNRP indicator, “-“ in the DNR/DNRP indicator, and/or chimes, depending upon whether you are operating a diesel/gas or battery electric vehicle.
E3112025-09-03. Other. Condition, Chassis Affected, and Warranty sections updated with the following verbiage “E311 must be flagged and open in Service Information Record (SIR) at the time of RO open date to qualify.” Also, “Through Standard Warranty or any applicable active Extended Warranty” verbiage was removed from Warranty section.
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.
46-0112024-12-02. Service bulletin. Some 579EV and 520EV BEV trucks may have loose or improperly torqued ESS gland nuts. This may cause an intermittent warning light on the dash display.
7-7002024-11-05. Warranty extension. 7/700 Service Agreement - Letter Only.
24PBE2024-04-03. Service bulletin. INTERIM Safety Recall Parts are not currently available for this safety recall. This bulletin will be updated once repair parts are available. The right-hand shift stalk may have an improper wire harness terminal crimp within the wire harness connector. Loss of communication between the right-hand shift stalk and the transmission may result in the vehicle becoming disabled after it comes to a stop thereby increasing the risk of crash or injury. A transmission fault will appear on the dash display if communication is lost.
45-0652023-11-10. Service bulletin. Certain 579 MLU chassis equipped with Cummins X15 engines have fan hub bracket hardware that are incorrect for the application and/or under torqued and could become loose and/or fail. Procedures are available to replace and properly torque the hardware.
45-0652023-10-03. Service bulletin. Certain 579 MLU chassis equipped with Cummins X15 engines have fan hub bracket hardware that are incorrect for the application and/or under torqued and could become loose and/or fail. Procedures are available to replace and properly torque the hardware.