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Service bulletins for the 2025 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.

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

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Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
E3282026-09-23. Service campaign. ELECTRICAL SYSTEM. Certain chassis with CARB 2024 compliant MX-13 engines must have the PEU wiring harnesses updated. The original wiring and fuse are insufficient for electrical system operation and protection.
01-0942026-09-23. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. [SmartAir / KIMS] A/C systems may shut down prematurely when voltage levels drop below a certain threshold.
P0032026-08-20. Service bulletin. ENGINE; ELECTRICAL SYSTEM. "For Peterbilt: Chassis list has been updated to include 1 chassis. The total chassis count is now 7. For Kenworth: Chassis list has been updated to include 1 chassis. The total chassis count is now 8."
46-0292026-08-20. Service bulletin. ELECTRICAL SYSTEM. When DAVIE version 26.21.2 is used to update the VECU3 to software version 3.4.46.0, the VECU3 5071 component group may display as --- after programming.
43-0892026-07-22. Service bulletin. ENGINE; ELECTRICAL SYSTEM. An optional software update is expected to be available on or after 07/31/26 for chassis equipped with EPA 2024 engine model year (EMY) 2024-2026 PACCAR MX-11 and MX-13 engines. This update provides customers with additional time to service their trucks before a DEF-related derate occurs. The software is being offered to customers in alignment with recently updated regulatory agency guidance.
46-0272026-06-17. Service bulletin. ELECTRICAL SYSTEM. The currently published HD BEV Chassis with PACCAR EPowertrain Service (Built After 1/14/2026) de-energizing Procedures on ServiceNet cannot be utilized for certain pre-production Battery Electric Vehicle (BEV) chassis.
43-0802026-06-17. Service bulletin. ELECTRICAL SYSTEM. "KW: A new recommended repair has been added to verify the software level and close the campaign in SIR.The repair procedure has been updated with additional note boxes for clear instructions. PB: The repair procedure has been updated with additional note boxes for clear instructions."
R26012026-06-04. Service bulletin. ELECTRICAL SYSTEM. Updated primary and/or secondary chassis modules for certain pre-production Kenworth chassis are now available for installation.
02-1772026-06-03. Service bulletin. ELECTRICAL SYSTEM. Troubleshooting procedures for 2.1m cab power windows are now available.
E3262026-05-06. Emissions. ENGINE; ELECTRICAL SYSTEM. EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24 PACCAR MX engines.
24PBE_KWE2026-03-05. Service bulletin. ELECTRICAL SYSTEM. The Parts section has been updated to clarify that freight charges for safety recall orders should not be passed on to the end customer.
24KWE / 24PBE2026-02-05. Service bulletin. ELECTRICAL SYSTEM. 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.
24PBE_24KWE2026-02-05. Warranty extension. POWER TRAIN; ELECTRICAL SYSTEM. 24PBE_24KWE RH Shift Stalk Update Warranty section has been updated with revised verbiage for picture requirements.
24PBE/KWE2026-01-06. Warranty extension. POWER TRAIN; ELECTRICAL SYSTEM. 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.
24KWE2025-12-05. Service campaign. ELECTRICAL SYSTEM; POWER TRAIN. 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.
R24052025-11-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM. All parts necessary to complete Phase 2 of this bulletin are now available. This retrofit provides certain chassis equipped with Cummins X15N (Natural Gas) engines with production level parts to replace preproduction parts installed at the time of manufacture.
25PACG2025-11-05. Service bulletin. ELECTRICAL SYSTEM. The 15-inch digital display in certain model year 2024–2026 Kenworth chassis may enter recovery mode (blue wrench screen) without prior indication. The screen becomes non-responsive and may result in non-compliance with FMVSS/CMVSS 101 (Controls and Displays), 121 (Air Brake Systems), 136 (Electronic Stability Control Systems for Heavy Vehicles). Because of a loss of speedometer and other functionality such as warnings, indicators, and gauges, the driver will not see the truck speed or the warnings that appear on the digital display. A loss of information on the digital display may increase the risk of a crash.
R2405 - KW2025-05-06. Service bulletin. ELECTRICAL SYSTEM; ENGINE; FUEL/PROPULSION SYSTEM. Due to parts availability, this bulletin will be divided into 2 phases. Phase 1 will bring affected chassis into emissions compliance before 06/30/2025 to avoid fines and penalties. Phase 2 will include all parts that are not currently available but are necessary to bring chassis up to production level. This bulletin will be updated once all Phase 2 parts become available. The emissions exemption for all chassis involved in this retrofit expires on 06/30/2025. After that date, all chassis that have not received this Phase 1 Retrofit will be out of compliance with emissions regulations and illegal to operate. NOTE If emissions exemptions are allowed to expire, vehicle owners could receive civil fines per regulation 40 CFR 19.4 up to $5,911 per engine. In addition, owners may be required to discontinue operation of the vehicle until the retrofit is completed.
E322 - KW2025-02-05. Service bulletin. ENGINE; ELECTRICAL SYSTEM. PSB E322: EMY2024 and EMY2025 CARB MX-13 Software Update Campaign Software Update is now available. Engine software must be updated to NA-110C before releasing chassis to final customers. Certain Vehicle Model Year 2025 T680/T880 chassis equipped with Engine Model Year (EMY) 2024 or 2025 CARB MX-13 engines and NA-100C software may experience a Malfunction Indicator Lamp (MIL) due to a software issue. Without this update, a derate may occur.
24KWE2024-04-03. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Safety Recall – INTERIM NOTIFICATION 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.

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