SERVICE BRAKES, AIR:SUPPLY:RESERVOIR/TANK
PACCAR Incorporated (PACCAR) is recalling certain 2009-2021 Kenworth C500, 2012-2021 Kenworth T440, 2009-2015 Kenworth T660, 2015-2024 Kenworth T680, 2009-2024 Kenworth T800, 2009-2020 Kenworth T370, 2014-2023 Kenworth T880, 2011-2016 Kenworth T470, 2023 Kenworth T480, and 2009-2019 Kenworth W900 vehicles. The air tanks have an insufficient volume of air for the brake system. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Remedy: Dealers will install the correct volume air tanks, free of charge. Owner notification letters were mailed August 12, 2024. Additional owner notification letters were mailed October 27, 2025. Owners may contact PACCAR customer service at 1-425-828-5888. PACCAR's number for this recall is 24KWD.
936 vehicles affected
STEERING:CRITICAL FASTENERS
PACCAR Incorporated (PACCAR) is recalling certain 2018-2020 Kenworth T270, T370, T440, T470, T660, T680, T880, T800, W900, W990; and 2018-2020 Peterbilt 330, 337, 348, 365, 367, 389, 520, 567, and 579 vehicles. The Dana D-Series axle steer arm fasteners that attach the steering arm to the steering knuckle may fail.
Remedy: Dealers will replace and torque the steer arm fasteners, at no charge. Owner notification letters were mailed November 8, 2022. Owners may contact Kenworth customer service at 1-425-828-5888 and Peterbilt customer service at 1-940-591-4220. PACCAR's numbers for this recall are 22 PBB and 22 KWB.
17,641 vehicles affected
ELECTRICAL SYSTEM:WIRING
PACCAR Incorporated (PACCAR) is recalling certain 2016-2022 Peterbilt 567, 579, 2021-2022 Peterbilt 536, 2017-2021 Kenworth T880, 2016-2022 Kenworth T680, 2018-2020 Kenworth T440, 2020 Kenworth T270, and 2021 Kenworth T280 vehicles. The methane detection system will not function if the system loses power.
Remedy: Dealers will re-wire the warning alarm, free of charge. Owner notification letters were mailed December 1, 2022. Owners may contact Peterbilt customer service at 1-940-591-4220, and Kenworth customer service at 1-425-828-5888. PACCAR's numbers for this recall are 21KWH and 21PBN.
1,107 vehicles affected
SERVICE BRAKES, AIR:ANTILOCK
PACCAR Incorporated (PACCAR) is recalling certain 2016-2021 Kenworth T680 trucks equipped with a 2.1m Cab and WABCO 6S/6M ABS brake system with drum brakes. The brake systems were manufactured with a standard rear-brake ABS modulator valve instead of a quick release valve, which may exceed the intended service-brake release timing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 121, "Air Brake Systems."
Remedy: PACCAR will notify owners, and dealers will replace the standard rear-brake, ABS modulator valve with a quick release valve, free of charge. The recall began November 30, 2020. Owners may contact PACCAR customer service at 1-425-828-5888. PACCAR's number for this recall is 20KWD.
1,416 vehicles affected
ELECTRONIC STABILITY CONTROL (ESC)
PACCAR Incorporated (PACCAR) is recalling certain 2008-2019 Peterbilt 330, 335, 337, 340, 348, 365, 367, 384, 386, 387, 388, 389, 567, 579 and 587 vehicles and 2008-2020 Kenworth T170, T270, T370, T660, T680, T800, T880, and W900 vehicles equipped with NAMUX Software. In 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 not illuminate to warn the driver of the loss of ABS. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems," and 136, "Electronic Stability Control System on Heavy Vehicles."
Remedy: PACCAR will notify owners, and dealers will update the NAMUX software within the cab control module, free of charge. PACCAR issued owners an interim notification on June 4, 2020. The recall began May 26, 2020. Owners may contact Kenworth customer service at 1-425-828-5888 or Peterbilt customer service at 1-940-591-4220. PACCAR's number for this recall is 20pbc AND 20KWB.
460,515 vehicles affected
SERVICE BRAKES, AIR:ANTILOCK:ABS WARNING LIGHT
PACCAR Incorporated (PACCAR) is recalling certain 2008-2019 Peterbilt 330, 335, 337, 340, 348, 365, 367, 384, 386, 387, 388, 389, 567, 579 and 587 vehicles and 2008-2020 Kenworth T170, T270, T370, T660, T680, T800, T880, and W900 vehicles equipped with NAMUX Software. In 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 not illuminate to warn the driver of the loss of ABS. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems," and 136, "Electronic Stability Control System on Heavy Vehicles."
Remedy: PACCAR will notify owners, and dealers will update the NAMUX software within the cab control module, free of charge. PACCAR issued owners an interim notification on June 4, 2020. The recall began May 26, 2020. Owners may contact Kenworth customer service at 1-425-828-5888 or Peterbilt customer service at 1-940-591-4220. PACCAR's number for this recall is 20pbc AND 20KWB.
460,515 vehicles affected
VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR
PACCAR Incorporated (PACCAR) is recalling certain 2020 Peterbilt 520 and 579 vehicles and Kenworth T680, T880 and W990 vehicles. The mirror glass may detach from the mirror carrier plate due to inadequate adhesion.
Remedy: PACCAR has notified owners, and dealers will inspect the upper mirror glass/mirror carrier, replacing it as necessary, free of charge. The recall began May 31, 2019. Kenworth owners may contact PACCAR customer service at 1-425-828-5888 and Peterbilt owners may call 1-940-591-4220. PACCAR's numbers for this recall is 19KWC and 19PBC.
3,907 vehicles affected
PARKING BRAKE
PACCAR Incorporated (PACCAR) is recalling certain 2018-2020 T680 and T880 tandem axle vehicles equipped with a parking brake on a single axle and certain models of automated manual transmissions. During cold temperatures, the signal from the park brake pressure switch to the transmission controller may be delayed possibly resulting in the vehicle moving unexpectedly.
Remedy: PACCAR will notify owners and dealers will replace the park brake pressure switch, free of charge. PACCAR issued owners and interim notification on June 3, 2019. The recall began August 6, 2019. Owners may contact PACCAR customer service at 1-918-259-3258. PACCAR's number for this recall is 19KWB.
1,837 vehicles affected
SUSPENSION:REAR:AXLE:NON-POWERED AXLE ASSEMBLY
PACCAR Incorporated (PACCAR) is recalling certain 2020 Kenworth T680, T800, T880, W900 and W990 trucks. The rear axles may not contain oil.
Remedy: Paccar will notify owners, and Kenworth dealers will inspect all of the rear axles for the presence of oil. If no oil is present, the wheels ends will be removed and the bearings, hub and axle shaft will be inspected for damage. If excessive wear or heat damage is evident, the components will be replaced, as necessary. Oil will then be added per the axle specifications. These repairs will be performed free of charge. The recall began April 16, 2019. Owners may contact Kenworth customer service at 1-425-828-5888. Paccar's number for this recall is 19KWA.
93 vehicles affected
Right-hand shift stalk between the shifter and the transmission is causing the vehicle to become disabled while stopped and unable to go from forward to reverse. Also getting SPN 639 pop-up when communication has been lost between the engine control module (ECM) and SAE J1939 data link. The check engine light illuminates, and the ECM immediately logs the fault code. Have to depress brake pedal while stopped & cycle gear selector to get fault to clear to start engine . Message also displayed Transmission Fault Repair Required Find Service Center . Also had new spring clutch replaced in May of 2024. Truck has 525k miles on it .
The clutch Spring on these trucks have been failing heavily. We have a couple more of these trucks and they all have the same issue. the housing for the clutch springs are cracked or damaged at less than 500,000 miles on a heavy duty truck. These clutches are supposed to last over 1MM miles. Its not a coincidence that every truck we have is failing at the same mileage. These clutches are made defective from the manufacturer. Its also a coincidence that the replacement clutches are not the original design and are of a newer design and brand. THIS is RED FLAGS!!!!
My circumstances are EXACTLY as described in a release 12/19/2019 Tech Service Bulletin A002 I experienced the vibration in my steering wheel that caused me to be suspect that there was something wrong in the drive train. Upon further investigation. I noticed that an oil seal was leaking, and when I dug a little deeper, I noticed gears that were broken and shaved down and then stopped at a Kenworth corporate location upon which they told me that I needed to purchase the entire unit to fix it. I then decided that I was going to add some differential oil and drive at a speed of 45 miles an hour, which did not cause any vibration to Chicago, which was roughly 3 hours away from my location in Michigan upon which I would have more resources at my disposal. It is then that I learned of the technical service bulletin relating to my issue. I then took it to CIT trucks which is where I learned that you do not have to buy the complete unit that. The parts are available to be purchased to fix the issue. They did, however say that they would process the claim on behalf of this technical service bulletin. They advised me that the individual that they got a hold of seem to have an attitude about it and sometimes this happens whereas other times they will get a hold of somebody that will make an exception. Apparently they stated my situation is two months out of warranty from when my tractor was placed into service but it’s original owner. I am not in a position due to other issues that I have experience with the truck since purchasing it in June that I can afford this but more importantly, there is a known issue with the same exact identical problem that I experienced. I need help with my situation they need to be held accountable for what has gone wrong because it is not my fault.
Throw out bearing failed prematurely. Truck only has 491,000 miles and has had a catastrophic failure resulting in a $29,000 repair bill. I have 4 other trucks like this and they are all showing signs of the same thing.
The clutch has a loose spring, Fork is damaged. Throwout bearing worn.
When driving, the truck will not go into gear. For example, if I am trying to shift gears in the automatic, it will stay in that gear. When traveling down the highway, it stays in a gear. I have to find a safe place to pull over and put it in neutral, then proceed. I have already changed the right hand stalk once before and it didnt go into reverse, that was the reason for changing it. I get codes saying that it needs to ve changed again and it was just recently put on.
This truck was breaking automatically, and no one was front of the truck, it was scary, I almost crashed with loaded trailer on my back, it has done it multiple times, and my traction light and stability light is on all the time and adaptive cruise control had turned off completely abs light comes on and off frequently,
This truck was breaking automatically, and no one was front of the truck, it was scary, I almost crashed with loaded trailer on my back, it has done it multiple times, and my traction light and stability light is on all the time and adaptive cruise control had turned off completely abs light comes on and off frequently,
This truck was breaking automatically, and no one was front of the truck, it was scary, I almost crashed with loaded trailer on my back, it has done it multiple times, and my traction light and stability light is on all the time and adaptive cruise control had turned off completely abs light comes on and off frequently,
ON SUNDAY, THE 22ND OF MARCH, I WAS TRAVELING SOUTH ON US HWY 45. THE SKY WAS CLEARING AND THE ROAD WAS DRY. I HAD MY CRUISE SET TO 65 MPH. AS I APPROACHED AN OVERPASS, THE DISTANCE SENSOR ON THE FRONT OF THE TRUCK MISTOOK THE SHADOW OF THE OVERPASS AS A STOPPED VEHICLE. WARNING LIGHTS AND BUZZERS WENT OFF AND THE VEHICLE DID A HARD BRAKE. LUCKILY, THERE WERE NO OTHER VEHICLES AROUND ME. I TOOK IT TO OUR SHOP AND THE SYSTEM WAS CLEANED. FOUR DAYS LATER, THE SENSOR MISTOOK AN OVERHEAD INTERSTATE SIGN FOR A STOPPED VEHICLE. AGAIN, THE WARNING LIGHTS AND BUZZERS AND A HARD BRAKE. KENWORTH TECHS WERE SENT OUT TO OUR SHOP TO MAKE REPAIRS. EVERY ONE OF OUR DRIVERS THAT I HAVE SPOKEN TO HAVE EXPERIENCED THE SAME THING MULTIPLE TIMES. THIS IS DANGEROUS. IF SOMEONE HAD BEEN FOLLOWING ME, THEY WOULD HAVE REAR-ENDED MY TRAILER.
ON SUNDAY, THE 22ND OF MARCH, I WAS TRAVELING SOUTH ON US HWY 45. THE SKY WAS CLEARING AND THE ROAD WAS DRY. I HAD MY CRUISE SET TO 65 MPH. AS I APPROACHED AN OVERPASS, THE DISTANCE SENSOR ON THE FRONT OF THE TRUCK MISTOOK THE SHADOW OF THE OVERPASS AS A STOPPED VEHICLE. WARNING LIGHTS AND BUZZERS WENT OFF AND THE VEHICLE DID A HARD BRAKE. LUCKILY, THERE WERE NO OTHER VEHICLES AROUND ME. I TOOK IT TO OUR SHOP AND THE SYSTEM WAS CLEANED. FOUR DAYS LATER, THE SENSOR MISTOOK AN OVERHEAD INTERSTATE SIGN FOR A STOPPED VEHICLE. AGAIN, THE WARNING LIGHTS AND BUZZERS AND A HARD BRAKE. KENWORTH TECHS WERE SENT OUT TO OUR SHOP TO MAKE REPAIRS. EVERY ONE OF OUR DRIVERS THAT I HAVE SPOKEN TO HAVE EXPERIENCED THE SAME THING MULTIPLE TIMES. THIS IS DANGEROUS. IF SOMEONE HAD BEEN FOLLOWING ME, THEY WOULD HAVE REAR-ENDED MY TRAILER.