WenmarOpen by Wenmar Pro

Service bulletins for the 2020 Kenworth T880

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.

62 on file from NHTSA, as of 2026-10-19.

By type

By component

By topic

Only bulletins with component: Transmission and driveline are shown. Show all

Bulletins, newest first
26-0352026-07-21. Service bulletin. POWER TRAIN. Updated Eaton's TAIB0885EN Bulletin link.
E3112025-09-03. Other. ENGINE; POWER TRAIN. 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.
T0122022-01-06. Service bulletin. POWER TRAIN. Non-Safety Campaign: Drivers of vehicles equipped with PACCAR TX-12 transmissions may experience harsh shifts and gear grinding noise. Premature Main Drive Gear damage may occur due to clutch housing and main case countershaft bearing bore wear.
26-0382022-01-06. Service bulletin. POWER TRAIN. 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. ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY. 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.
A0032020-11-05. Service bulletin. POWER TRAIN; STEERING. PACCAR has determined that all Set Forward Front Axle (SFFA) models with the PACCAR 20K front steer axle and wide-based tires have the potential to experience a shimmy or shake in the front axle. Wide-based tires include any series tires with widths of 385 mm or higher. This is due a lack of friction in the current axle rotating components. Replacing the thrust roller bearing with a thrust washer assembly creates enough friction to eliminate the shimmy.
22-0162020-01-04. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; WHEELS; POWER TRAIN; EQUIPMENT. This bulletin has been obsoleted and replaced by Safety Recall 19KWE.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.