AutoStatsIQ
Data through Oct 2026
Model year

2018 Kenworth T680

Heavy truck, diesel, 6x4, built in United States. Owner complaints on file from Jul 19, 2018 to Apr 17, 2025.

Recalls (15)Complaints (11)Investigations (1)Bulletins (74)
Recall campaigns covering this model year15657k vehicles or units across those campaigns
Owner complaints113.7 times the median 2018 heavy truck
Severity index18.22018 heavy trucks average 17.8
First 24 months3Complaints in its first two years
Complaints over time

Complaints about the 2018 Kenworth T680 peaked in 2021, with 3 filed

Owner complaints about this model year, by the year they were filed with NHTSA.

01232018201920202021320222023202420252026
Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

36% of complaints about the 2018 Kenworth T680 name brakes

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

Brakes
4
Driver assistance
3
Powertrain
2
Seat belts
2
Electrical system
1
Engine and cooling
1
Seats
1
Tires
1
Visibility and wipers
1
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

15 recall campaigns cover the 2018 Kenworth T680

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Recall campaigns for the 2018 Kenworth T680
CampaignFiledSubjectComponentVehiclesRemedy
24V-145Feb 23, 2024Air tanks have an insufficient volume of air for the brake systemBrakes936Repair or modification
22V-277Apr 25, 2022Dana D-Series axle steer arm fasteners that attach the steering arm to the steering knuckle may failSteering17,641Part replacement
21V00N000Dec 29, 2021Methane detection system will not function if the system loses powerElectrical system1,107Not stated
20V-593Sep 28, 2020Brake systems were manufactured with a standard rear-brake ABS modulator valve instead of a quick release valve, which may exceed the intended…Brakes1,416Part replacement
20V-199Apr 6, 2020In the event that the Anti-lock Brake System (ABS) loses battery and/or ignition power to the controller, the dash warning light for the ABS may…Stability and traction control460,515Software update
19V-275Apr 5, 2019During cold temperatures, the signal from the park brake pressure switch to the transmission controller may be delayed possibly resulting in the…Brakes1,837Part replacement
18V-931Dec 21, 2018Internal component in the clutch assembly may fail, possibly resulting in unintended vehicle movementPowertrain25,556Not stated
18V-870Dec 7, 2018Seat belt buckle assemblies on these vehicles may have been glued and not sewn during manufacturing, possibly causing the assembly to come apart…Seat belts6,857Part replacement
18V-816Nov 16, 2018Since both intermediate side marker lamps and reflex reflectors are required, these vehicles fail to comply with the requirements of Federal Motor…Lighting1,619Repair or modification
18V-657Sep 21, 2018In certain driving conditions, such as on a long down-hill grade, the fuel line may burst if the fuel pump cooling circuit screen becomes restrictedEngine and cooling48,896Part replacement
18V-368Jun 1, 2018In the event that the Anti-lock Brake System (ABS) loses battery and/or ignition power to the controller, the dash warning light for the ABS may…Stability and traction control85,626Software update
18V-092Feb 2, 2018Display that indicates which transmission gear the driver selected may display incorrectlyElectrical system1,938Software update
17V-840Dec 22, 2017Transmission control module (TCM) may allow the engine to crank briefly even if the transmission shifter is not in neutralPowertrain1,222Software update
17V-443Jul 13, 2017These engines have a fuel pump whose drive gear could possibly slip on its drive shaft, causing a fuel pump function loss, resulting in an engine…Fuel system1,737Part replacement
17V-103Feb 15, 2017Plastic fuel tee fittings on these trucks may leak fuelFuel system465Part replacement
Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2018 Kenworth T680

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

11 complaints on file, page 1 of 1.

  1. Filed Apr 17, 2025Failure Dec 27, 2024Charlottesville, VATiresCrash

    See attached document for complaint.

    NHTSA complaint 11655149
  2. Filed Apr 25, 2023Failure Apr 18, 2023Oklahoma City, OK, OKElectrical system, Engine, Power train

    We bought this truck with 401, 000 miles on it. So far we have had to replace the rear ends twice. the whole DPF system, the check engine light still on since the day we bought the truck. We have had 5 NOS sensors put into the truck, 6 input and output sensors put into the truck. This truck has been defective since the day of purchase. We keep having the same error code of p3770 come up evetime we take to shop. The error code has been looked at so many times that even the master techs don't know what is wrong with the truck other then we keep replacing the same stuff over and over again.

    NHTSA complaint 11518882
  3. Filed Jul 21, 2022Failure Jul 20, 2022Davie, FLService brakes

    The air dryer bracket part number G11-6218 was craked and because of that it wasn't secured to the frame. The air dryer was hanging on the airline with the piece of the broken bracket. It is not secured. That is extremely unsafe because it could brake airlines and trucks would lose its brakes.

    NHTSA complaint 11475046
  4. Filed Jun 15, 2021Failure Jun 12, 2021Jonesville, VASeat belts, Seats, Visibility/wiper

    Seat belt frame cover was cracked and seat belt would not retract. The other side was broken as well with casing coming off. I was in the middle of backing for a delivery and the driver seat retract would not stay in place and the seat kept folding forward causing me to not be able to back the truck. I was told this is due to obese drivers causing the seat to break. Also during the time of my brake issue where are the brakes locked up and on several other occasions the air brake lost pressure for no reason.

    NHTSA complaint 11420956
  5. Filed Jun 15, 2021Failure Jun 14, 2021Jonesville, VAAdaptive cruise control, Service brakes, Unknown or other

    I started the truck after not driving for 1 day and a heavy rain storm the day prior. I attempted to drive bobtail when the brakes locked up. The traction control light came on then went back off. Then the adaptive cruise control notification came on. The regon came on then went back off. A speedometer sign with an exclamation mark came up and would not go away. After attempting to go down the road the brakes continued to lock up, would not release and caused the rear passenger tires to go bald and lose my job.

    NHTSA complaint 11420954
  6. Filed May 4, 2021Failure May 4, 2021393,000 milesANY Town, AAAutomatic emergency braking

    AUTOMATIC EMERGENCY BRAKING IS AN ABSOLUTE DANGER TO THE MOTORING PUBLIC AND NEEDS TO BE ELIMINATED IMMEDIATELY. I AM SICK AND TIRED OF ENGINEER'S WHO DON'T KNOW THEIR ASS FROM A HOLE IN THE GROUND DESIGNING BULLSHIT THAT DOESN'T WORK. FAR TOO MANY FALSE RADAR RETURNS AND UNWANTED HARD STOPS TO BE OF ANY USE. I DO NOT OWN THIS VEHICLE BUT IF I DID THE FIRST THING I WOULD DO RIGHT AFTER I PULL THE FUSE FOR THE LANE DEPARTURE WARNING WOULD BE TO ISOLATE AND BYPASS AEB. THIS WILL BE DONE ON ANY VEHICLES I PURCHASE IN THE FUTURE AND I DO NOT CARE WHAT THE LAW STATES ABOUT DOING SO

    NHTSA complaint 11415137
  7. Filed Nov 1, 2020Failure Sep 23, 2020431,137 milesSioux Falls, SDPower train

    UNIT HAD CLUTCH FAILURE FAILED TO DISENGAGE UNDER 18E-102, PER FEDERAL GUIDLINES IT FALLS UNDER THE CLUTCH RANGE OF AU1704192065 AND FALLS UNDER EATONS ORIGINAL CAMPAIGN RELEASE BUT THEY REVISED IT TO WHERE IT DOES NOT COVER THIS ONE BECUASE NOW THEY CHANGED THE RANGE TO AU1711 THRU AU1804 BUT WE ARE SEEING A LOT OF FAILURE BELOW AU1711, WHY DOES EATONS DOCUMENT NOT MATCH THE FEDERAL DOCUMENTS? AND WHY ARE WE SEEING THESE CLUTCH FAILURES ON TRUCKS THAT WERE REVISED AND SAID TO NOW BE GOOD, BUT THEY ARE FAILING IN THE SAME MANNER

    NHTSA complaint 11372492
  8. Filed Oct 1, 2019Failure Sep 28, 2019292,000 milesOldtown, IDAdaptive cruise control

    TL* THE CONTACT OWNS A 2018 KENWORTH CONSTRUCT T680. WHILE DRIVING THROUGH SNOW OR ICE, THE VEHICLE'S ADAPTIVE CRUISE CONTROL WOULD FLASH AS IF THE VEHICLE WERE APPROACHING SOMETHING AND ACTIVATED BY STOPPING THE VEHICLE IN ORDER TO PREVENT A CRASH. THE CONTACT STATED THAT THE FAILURE ONLY OCCURRED DURING THIS TYPE OF WEATHER EVEN WHEN THERE WERE NO OTHER VEHICLES OR OBJECTS NEARBY. THE CONTACT SPOKE WITH THE KENWORTH HOTLINE FOR VEHICLE BREAKDOWNS WHO STATED THAT THEY DID NOT CONSIDER THIS A FAILURE. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE ISSUE. THE APPROXIMATE FAILURE MILEAGE WAS 292,000.

    NHTSA complaint 11265428
  9. Filed Jan 13, 2019Failure Dec 31, 2018150,752 milesGeddes, SDService brakesFire

    UNIT DRIVING ON FLAT ROAD, LEFT FRONT DRIVES STARTED SMOKING WHILE DRIVING ON INTERSTATE BRAKES NOT BEING APPLIED, DRIVER STOPPED AND BY THIS TIME THE FIRE HAD SPREAD THRU THE UNDER SIDE OF TRUCK AND TRAILER, TOTAL LOSS OF TRUCK, TRAILER AND LOAD, BELIVED TO BE HALDEX BRAKE CAN FAILURE LEAKING AIR AND CAUSING BRAKES TO DRAG AND START ON FIRE

    NHTSA complaint 11166776
  10. Filed Nov 4, 2018Failure Nov 1, 2018116,200 milesSyracuse, NYSeat belts

    SEAT BELT ALARM NEVER TURN OFF EVEN IF I HAVE MY SEAT BELT ON

    NHTSA complaint 11145222
  11. Filed Jul 19, 2018Failure Jul 19, 2018238,380 milesWinterville, GAService brakes

    THE MITIGATION SYSTEM CAUSES A 'HARD BRAKING' EVENT TO OCCUR. CAN BE TRIGGERED BY AN OVERPASS, CONSTRUCTION ZONES, TRUCK IN ANOTHER LANE, ETC. USUALLY OCCURS ON HIGHWAYS WHILE AT OUR TOP SPEED OF 65 MPH. IT WILL CAUSE A HARD BRAKE DOWN TO 45 MPH. CAN OCCUR DURING NIGHT OR DAYTIME.

    NHTSA complaint 11112360
Source: NHTSA ODI complaints file.
Investigations

1 NHTSA investigation on file

  • PE21018 Preliminary evaluation, Brakes
    Haldex Brake Chamber Failures
    Opened Jul 16, 2021, closed Oct 10, 2025
Source: NHTSA ODI investigations file.
All investigations
Service bulletins

74 manufacturer communications cover this model year

Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.

  • P001 Sep 11, 2026 · Service Bulletin/Repair Instructions
    "Kenworth: Dealers should check the chassis list and SIR weekly for VIN changes. 2 chassis added to the chassis list. Peterbilt: Dealers should check the chassis list and SIR weekly for VIN changes. 10 chassis added to the chassis list."
  • E343 Sep 5, 2026 · Service Bulletin/Repair Instructions
    An exhaust manifold slip joint seal kit is now available for EPA 2017-2024 PACCAR MX-13 engines.
  • E311 Jul 10, 2026 · Service Bulletin/Repair Instructions
    The Condition, Chassis Affected, Service Action, Warranty, and Procedure sections have been updated to include the latest prognostics bulletin verbiage.
  • 26-035 Jul 3, 2026 · Service Bulletin/Repair Instructions
    Updated Eaton's TAIB0885EN Bulletin link.
  • E311 Jun 6, 2026 · Service Bulletin/Repair Instructions
    The PACCAR Powertrain Prognostics Webcast video link has been removed. It will be included with updated information at a later date.
  • E311 May 18, 2026 · Service Bulletin/Repair Instructions
    Kenworth - The Warranty section has been updated to include Peterbilt-specific SRT codes for cross-division repair filing.
  • 02-177 May 6, 2026 · Service Bulletin/Repair Instructions
    Troubleshooting procedures for 2.1m cab power windows are now available.
  • 45-070 Apr 17, 2026 · Service Bulletin/Repair Instructions
    The attached procedures document has been updated with more detail and explanations. This is not a stand-alone procedure. Cummins Quickserve troubleshooting will specify the use of these procedures while troubleshooting specific fault codes.
  • 14-034 Apr 16, 2026 · Service Bulletin/Repair Instructions
    Bogie Crossmember Torque Value Update - Procedure has been updated to correct torque values.
  • E326 Apr 1, 2026 · Emissions
    EPA17-24 MX Fuel Injector Connector - This bulletin has been revised to include all EPA17-24 and CARB24 PACCAR MX engines.
  • E304 Mar 21, 2026 · Emissions
    CARB Chassis Update - Chassis list updated with 5 KW and 31 PB additional chassis.
  • E326 Mar 6, 2026 · Emissions
    EPA17-24 MX-13 Fuel Injector Connector - This bulletin has been revised to include EPA24 PACCAR MX-13 engines.
  • 45-070 Jan 31, 2026 · Service Bulletin/Repair Instructions
    Procedure pictures updated for clarity. When troubleshooting Cummins X15 fault codes 555 or 556, follow this additional testing, inspection, and documentation procedure to help identify the root cause of dusted engines. This is not a stand-alone process bu…
  • E324 Aug 4, 2025 · Service Campaign
    "Campaign New and improved software is now required for chassis equipped with an Engine Model Year 2016 PACCAR MX-13 engine to maintain DEF sensor performance and ensure compliance with emissions standards.
  • 24KWD Apr 9, 2024 · Service Bulletin/Repair Instructions
    Certain C500/T440/T470/T660/T680/T800/T880/W900 chassis may have air tank reservoirs that do not meet air volume requirements per FMVSS/CMVSS 121 âAir Brake Systemsâ. This bulletin will be updated when repair parts and procedures are available.
  • E293 Jun 9, 2023 · Service Bulletin/Repair Instructions
    Emissions Recall Certain Vehicle Model Year 2017-2019 chassis equipped with EPA2017 compliant PACCAR MX-13 engines have an EGR flex pipe that can develop cracks and leak untreated exhaust. The EGR Flex pipe will be replaced if it has a suspect part number.
  • 43-072 Jun 2, 2023 · Service Bulletin/Repair Instructions
    Certain chassis with Engine Model Year 2016-2021 PACCAR MX-11/MX-13, or EPA13 and EPA21 Cummins ISX12/ISX15/X15 engines that had a previously failed DEF sensor and with DEF sensor software disabled due to industry DEF sensor shortages will now be able to re…
  • E279 Jun 1, 2023 · Service Bulletin/Repair Instructions
    E279: PACCAR MX-13/MX-11 Engine MY17 Software Incorrectly Sets DTC P1092 PACCAR MX-13/MX-11 Engine MY17 Software Incorrectly Sets DTC P1092 Emission Recall - PACCAR MX-13/MX-11 MY2017 software incorrectly sets DTC P1092, which could result in reduced avai…
  • E298 Feb 24, 2023 · Service Bulletin/Repair Instructions
    Certain Model Year 2018 PACCAR MX-11 engines may have contaminated Crankcase Pressure Sensors. These sensors will be replaced.
  • 03-087 (E295) Feb 24, 2023 · Service Bulletin/Repair Instructions
    Certain Model Year 2021-2024 chassis with PACCAR MX engines and optional fuel filter restriction virtual gauge may display incorrect restriction levels. The virtual gauge will be temporarily disabled until a revised sensor strategy is developed.
  • E303 Jan 12, 2023 · Service Bulletin/Repair Instructions
    This campaign is the final opportunity to replace the oil filter screw cap to reduce occurrences of broken bypass valve tabs. Broken oil valve tabs can cause oil flow obstruction to critical engine parts, resulting in serious engine damage. Customers that d…
  • 45-064 Oct 18, 2022 · Service Bulletin/Repair Instructions
    Info Only - PACCAR is introducing Over-the-Air (OTA) software updates for engine MY17 and newer chassis equipped with Cummins X15, X12, ISX12, ISX12N, L9N, PX-7, and PX-9 engines The technology will leverage the existing Remote Diagnostic cs hardware to del…
  • E296 Aug 3, 2022 · Service Bulletin/Repair Instructions
    Kenworth is providing guidance for PACCAR MX Engine Composite Oil Pan leak troubleshooting to avoid over-repairs and to provide warrantable repair guidance. Oil leaks, if not repaired, can lead to severe engine damage.
  • 22KWB May 10, 2022 · Service Bulletin/Repair Instructions
    Safety Recall â“ Interim Notification - The Dana D-Series front axle steer arm fasteners that attach the steer arm to the steering knuckle may fail, increasing the risk of a crash or injury. Repair information will be added when a repair procedure and parts…
  • 51-013 Feb 4, 2022 · Service Bulletin/Repair Instructions
    Due to major data carriers phasing out 3G networks, chassis currently utilizing first generation Peoplenet Mobile Gateway (PMG001) will experience severe 3G service degradation as early as January of 2022. Chassis currently utilizing 3G antennas as a prim…
  • T012 Dec 2, 2021 · Service Bulletin/Repair Instructions
    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.
  • 26-038 Dec 2, 2021 · Service Bulletin/Repair Instructions
    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.
  • 03-074 Nov 9, 2021 · Service Bulletin/Repair Instructions
    Non-Safety Campaign - The TPMS ECU is not communicating properly with TPMS sensors. The result is a delay or failure of communication between the TPMS ECU and the TPMS sensors , causing inaccurate TPMS readings. A firmware update resolves the issue.
  • 42-059 Nov 15, 2021 · Service Bulletin/Repair Instructions
    Non-Safety Campaign âÃÂÓ Vehicles with a Cummins X15 engine and Horton fan drive may set Diagnostic Trouble Code (DTC) 6637 and/or 3838 due to fan speed that results in the fan remaining activated until the power is cycled. A new controller will resolve…
  • 43-071 Sep 21, 2021 · Service Bulletin/Repair Instructions
    Fix-As-Fail – Due to undersupply issues, only a limited supply of Diesel Exhaust Fluid (DEF) sensors are available. As a temporary solution, after PACCAR confirms a DEF sensor is not available, a temporary software update will allow a vehicle to continue op…
  • 21KWD Jun 14, 2021 · Service Bulletin/Repair Instructions
    Information Only – C hassis equipped with MY2021 B EPA emission s standards will be shipped through atleast the end of the 2021 calendar year without particulate matter (PM) sensors installed .
  • E271 Jun 8, 2021 · Service Bulletin/Repair Instructions
    An engine software update is required to resolve OBD system readiness, DEF doser diagnostics, and otherOBD system software related issues.
  • E265 May 25, 2021 · Service Bulletin/Repair Instructions
    Selected engines have been identified to receive a camshaft inspection and an update for improved camshaft lubrication.
  • 02-160 Feb 10, 2021 · Service Bulletin/Repair Instructions
    Information Only – Windshield washer pumps have a high No Trouble Found rate. Washer pumps may fail to spray due to a clogged filter.
  • 32-018 Feb 25, 2021 · Service Bulletin/Repair Instructions
    Non-Safety Campaign – Chassis with the City Horn option may generate unexpected alerts. A VECU software update is available to resolve the issue.
  • 32-017 Feb 25, 2021 · Service Bulletin/Repair Instructions
    Non-Safety Campaign – The batteries may drain quickly due to the VECU not going to sleep. Updated VECU software is available to resolve the issue.
  • 51-008 Jul 7, 2016 · Service Bulletin/Repair Instructions
    T680 predictive cruise control(PCC) incompatibility with cummins engine.
  • 26-037 Dec 18, 2020 · Service Bulletin/Repair Instructions
    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.
  • 26-035 Dec 18, 2020 · Service Bulletin/Repair Instructions
    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 a…
  • T010 Dec 18, 2020 · Service Bulletin/Repair Instructions
    Non-Safety Campaign – Vehicles with PACCAR transmissions may experience transmission service lamp activation, no gear engagement from neutral, and/or DTC 511 FMI 7 or 10 is set. Transmission software and shift calibration updates are available to resolve
  • 32-014 Oct 12, 2020 · Service Bulletin/Repair Instructions
    Fix-As-Fail – The Battery Management System (BMS) may report the incorrect battery condition. Additional diagnostics are available to correctly determine and repair the root cause of the issue.
  • 37-001 Aug 26, 2020 · Service Bulletin/Repair Instructions
    Fix-As-Fail – The Master Switch Module (MSM) may lose dash switch memory and functionality when the battery disconnect switch is cycled. An improved MSM is available to resolve the issue.
  • 13-054 Jul 29, 2020 · Service Bulletin/Repair Instructions
    Fix-As-Fail - Bendix New-Gen Lightweight Steer Axle Drum Brake Spider Cracking
  • 32-015 Jun 8, 2020 · Service Bulletin/Repair Instructions
    Information Only: This bulletin provides dealers with a battery warranty quick reference guide to ensure the appropriate tests for battery warranty are performed in order to prevent battery warranty claims filed with incorrect or incomplete information.
  • 43-066 Mar 27, 2020 · Service Bulletin/Repair Instructions
    DEF tank covers may become loose and potentially crack on vehicles built before October 2019 with DEF tank part number M86-6221-003**(TANK-DEF MEDIUM ASSY) and M86-6222-003**(TANK-DEF LARGE, ASSY). Resolution is to resolve the vibration on the tank cover b…
  • 34-085 Mar 3, 2020 · Service Bulletin/Repair Instructions
    Information Only – Vehicles may have the connector seals on the wheel speed sensor incorrectly installed, which may lead to water intrusion and corrosion in some vehicles.
  • 32-016 Mar 17, 2020 · Service Bulletin/Repair Instructions
    Information Only: Proper jump-starting voltage will eliminate high voltage related issues and equipment damage.
  • 32-013 Jan 3, 2020 · Service Bulletin/Repair Instructions
    Information Only: The AutoStart System Test does not recognize the hood opening and closing when running the test on a model 579 or 567 chassis equipped with a VECU software version 9.8 and 9.9. The issue will be fixed on a future VECU software update. Th…
  • 03-071 Dec 18, 2019 · Service Bulletin/Repair Instructions
    Information Only - Vehicles built with NAMUX software from 2013 to present may experience accuracy issues with the tachometer. The issue can be temporarily resolved using any one of the included procedures.
  • 43-063 Dec 19, 2019 · Service Bulletin/Repair Instructions
    Emissions Campaign â“ The Engine Overspeed lamp may illuminate during a smoke opacity test. A software update is available to resolve the issue.
  • 01-071 Nov 21, 2019 · Service Bulletin/Repair Instructions
    Fix-As-Fail The evaporator core may crack in vehicles with the ISX-15 engine. An improved suction line has been released that removes stress transferred to the evaporator core.
  • 01-075 Nov 6, 2019 · Service Bulletin/Repair Instructions
    Information Only: This bulletin provides guidance for repairing an air-conditioning system after internal failure of the A/C compressor.
  • TIB43-062 Sep 27, 2019 · Service Bulletin/Repair Instructions
    Information Only â“ This bulletin provides information about the California Air Resources Board (CARB) Periodic Smoke Inspection Program (PSIP) and Heavy Duty Vehicle Inspection Program (HDVIP).
  • R1801 Aug 30, 2019 · Service Bulletin/Repair Instructions
    MY2018 QV/VV Retrofit
  • 44-030 Aug 30, 2019 · Service Bulletin/Repair Instructions
    Fix-As-Fail - Nylon fuel lines may be too short, potentially resulting in a cracked or loose, low pressure fuel fitting at the engine or fuel tank, which may introduce air into the fuel system resulting in a hard-to-start or no-start condition.
  • 42-056 Aug 28, 2019 · Service Bulletin/Repair Instructions
    Fix-As-Fail -“ Composite fittings used in the cooling system may crack, resulting in coolant leaks. Brass fittings are available to replace the composite fittings.
  • 42-058 Aug 23, 2019 · Service Bulletin/Repair Instructions
    Fix-As-Fail: Two separate causes have been identified as root cause of intermittent low coolant indicator illumination.
  • 01-073 Aug 2, 2019 · Service Bulletin/Repair Instructions
    Fix as Fail HVAC system may demonstrate inadequate temperature control, be stuck in defrost mode, or have intermittent changes in fan speed that can be remedied with an updated HVAC software.
  • 23-003 Jul 22, 2019 · Service Bulletin/Repair Instructions
    Fix as Fail: Vehicles with Eaton Ultrashift Plus or Fuller Advantage Automated transmissions may display fault codes and/or have clutch release problems due to broken clutch levers. Resolution is to replace the clutch.
  • 34-077 Apr 8, 2019 · Service Bulletin/Repair Instructions
    Information Only: Proper instructions for closure of power distribution box cover to prevent corrosion.
Source: NHTSA manufacturer communications files.
About service bulletins