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
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
ENGINE AND ENGINE COOLING:ENGINE
PACCAR Incorporated (PACCAR) is recalling certain model year 2010-2016 Kenworth T440, T800, and W900 trucks manufactured August 31, 2009, to April 20, 2015, and 2008-2015 Peterbilt 320, 337, 348, 365, 382, and 384 trucks manufactured July 27, 2007, to April 28, 2015, and equipped with certain Cummins Westport ISL G engines. Excessive engine crankcase pressures may cause the 90-degree elbow of the vent tube assembly to detach from the crankcase ventilation breather, possibly allowing engine oil to come into contact with hot surfaces.
Remedy: Cummins will notify owners on behalf of PACCAR, and Cummins service centers will administer the repairs which include securing the ends of the 90-degree elbow and reprogramming the electronic control module (ECM) with software that can adjust the engine output under misfire conditions to limit crankcase pressures. These repairs will be performed free of charge. The recall began on June 12, 2015. Owners may contact Kenworth customer service at 1-425-828-5000, Peterbilt customer service at 1-940-591-4000 or Cummins Inc. at 1-800-343-7357. PACCAR's number for this recall is 15KWH and 515-G.
4,823 vehicles affected
SERVICE BRAKES
PACCAR is recalling certain model year 2007-2014 Kenworth T800 and W900 trucks manufactured March 22, 2006, through July 15, 2013 and equipped with Primaax tridem rear suspensions and a pusher and/or tag axle. The affected trucks have brake chambers that take longer to apply or release the brakes than the required time limit. Thus, these vehicles fail to conform to the requirements of Federal Motor Vehicle Safety Standard (FMVSS) No. 121, "Air Brake Systems."
Remedy: PACCAR will notify owners, and dealers will modify the air brake system, free of charge. The recall began on January 15, 2014. Owners may contact PACCAR at 1-425-468-7400. Kenworth's recall number is 13KWL.
18 vehicles affected
FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY
PACCAR IS RECALLING CERTAIN MODEL YEAR 2008-2012 KENWORTH T2000, T660, T700, T800, AND W900, AS WELL AS MODEL YEAR 2009-2012 PETERBILT 365, 367, 384, 386, 387, 388, 389, AND 587 TRUCKS EQUIPPED WITH PACCAR MX ENGINES. THE OIL MODULE CENTRIFUGAL SPINNER FILTER CAP IN THE PACCAR MX ENGINE MAY BECOME LOOSE, POSSIBLY ALLOWING THE CAP TO COME OFF AND ENGINE OIL TO PARTIALLY DISCHARGE FROM THE OIL MODULE ONTO EXHAUST COMPONENTS.
Remedy: DEALERS WILL RE-TORQUE THE OIL MODULE FILTER CAP AND INSTALL A SECONDARY RETENTION DEVICE ON THE SECONDARY CENTRIFUGAL SPINNER FILTER CAP. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING MARCH 2011. OWNERS MAY CONTACT KENWORTH AT 1-425-828-5440 AND PETERBILT AT 1-940-591-4196.
4,664 vehicles affected
SERVICE BRAKES, AIR:DISC:CALIPER
PACCAR IS RECALLING CERTAIN MODEL YEAR KENWORTH T660, T700, T800 AND W900 VEHICLES MANUFACTURED FROM DECEMBER 22, 2008, THROUGH AUGUST 2, 2010, AND EQUIPPED WITH AG400L AIR DISC BRAKES. THE AIR DISC BRAKE CALIPER COULD BE INSTALLED ON THE WRONG SIDE OF THE DRIVE AXLE POTENTIALLY CAUSING INTERFERENCE WITH THE SUSPENSION BRACKET AND THE REAR SUSPENSION AS THE OUTERMOST BRAKE PADS WEAR AND THE FLOATING CALIPER MOVES INBOARD.
Remedy: DEALERS WILL VERIFY THE CORRECT ORIENTATION OF THE BRAKE CALIPER AND PERFORM THE NECESSARY REPAIR FREE OF CHARGE. THE SAFETY RECALL BEGAN ON NOVEMBER 24, 2010. OWNERS MAY CONTACT KENWORTH AT 425-828-5440.
417 vehicles affected
STEERING:COLUMN
PACCAR IS RECALLING CERTAIN MODEL YEAR 2008-2010 TRUCKS EQUIPPED WITH TRW STEERING SHAFTS. THE CIRCUMFERENTIAL WELD AROUND THE STEERING SHAFT TUBE THAT WELDS THE SPLINED TUBE TO THE NON-SPLINED TUBE MAY BE MISLOCATED. MISLOCATION OF THE CIRCUMFERENTIAL WELD MAY ALLOW THE SPLINED TUBE AND NON-SPLINED TUBE TO ROTATE RELATIVE TO ONE ANOTHER DURING A LOW SPEED, HIGH TORQUE TURN, POSSIBLY RESULTING IN A SEPARATION OF THE TWO TUBES.
Remedy: DEALERS WILL INSPECT THE STEERING SHAFT USING A WELD PLACEMENT GAUGE PROVIDED BY TRW. ANY STEERING SHAFT FOUND TO HAVE BEEN WELDED IMPROPERLY WILL BE REPLACED FREE OF CHARGE. THE SAFETY RECALL BEGAN ON JULY 30, 2010. OWNERS MAY CONTACT KENWORTH AT 425-828-5440 AND PETERBILT AT 940-591-4196.
9,697 vehicles affected
SUSPENSION:REAR:AXLE:SPINDLE
KENWORTH IS RECALLING CERTAIN MODEL YEAR 2010 T2000, T660, T800 AND W900 VEHICLES MANUFACTURED BETWEEN JULY 30, 2009 AND SEPTEMBER 18, 2009. THE REAR AXLE OUTER END HUB MAY HAVE NOT BEEN PRIMED WITH OIL PROPERLY DURING THE REAR AXLE INSTALLATION PROCESS. POTENTIAL LACK OF OIL MAY CAUSE THE OUTER END BEARING TO HEAT UP AND/OR SEIZE, POSSIBLY RESULTING IN THE OVERHEATING OF THE WHEEL END.
Remedy: DEALERS WILL REPLACE THE BEARINGS, SEALS AND WILL ADD OIL TO THE OUTER END HUB AS WELL AS INSPECT RACES AND AXLE HOUSING FOR DAMAGE AND REPLACING AS NECESSARY FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MAY 24, 2010. OWNERS MAY CONTACT KENWORTH AT 425-828-5440.
21 vehicles affected
STEERING
KENWORTH IS RECALLING MODEL YEAR 2010 T2000, T800, T660 AND W900S TRUCKS MANUFACTURED BETWEEN JULY 1 AND OCTOBER 23, 2009. THE FASTENERS ATTACHING THE STEERING GEAR TO THE FRONT DRIVE BRACKET MAY HAVE RECEIVED INSUFFICIENT TORQUE DURING THE INSTALLATION PROCESS RESULTING IN LESS THAN REQUIRED CLAMP LOAD.
Remedy: DEALERS WILL INSPECT AND RE-TORQUE THE STEERING GEAR MOUNTING BOLTS FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING JANUARY 2010. OWNERS MAY CONTACT KENWORTH AT 1-425-828-5440.
3,078 vehicles affected
POWER TRAIN:AXLE ASSEMBLY
KENWORTH IS RECALLING MODEL YEAR 2009 THROUGH 2010 T2000, T800, T660 AND W900 TRUCKS MANUFACTURED BETWEEN NOVEMBER 12, 2008 AND SEPTEMBER 30, 2009. THE AXLE U-BOLTS ATTACHING THE AXLE TO THE SUSPENSION LEAF SPRING ON CERTAIN AG400L REAR SUSPENSIONS MAY HAVE RECEIVED INSUFFICIENT FASTENER TORQUE DURING THE INSTALLATION PROCESS. THE INSUFFICIENT TORQUE MAY ALLOW THE AXLE U-BOLT TO BECOME LOOSE, WHICH MAY CAUSE VIBRATION IN THE REAR SUSPENSION.
Remedy: DEALERS WILL INSPECT THE AXLE U-BOLTS FOR VISIBLE DEFECTS, INCLUDING BENT AND/OR SMASHED THREADS AND RE-TORQUE THE AXLE U-BOLTS TO FACTORY SPECIFICATIONS. THE RECALL BEGAN ON NOVEMBER 4, 2009. OWNERS MAY CONTACT KENWORTH AT 425-828-5440.
914 vehicles affected
ENGINE AND ENGINE COOLING:ENGINE:DIESEL
PACCAR IS RECALLING MODEL YEAR 2008-2010 KENWORTH T300, T270, AND T370, MODEL YEAR 2009-2010 T800 AND PETERBILT MODEL YEAR 2008-2010 335, 340, AND 367 VEHICLES BUILT ON CUMMINS' DIESEL ENGINE. THE VEHICLES MAY BE DESIGNED WITH A HARD WIRED, DASH-MOUNTED SWITCH THAT ENABLES THE VEHICLE OPERATOR TO INHIBIT AFTERTREATMENT DIESEL PARTICULATE FILTER REGENERATION IN ENVIRONMENTS WHERE THE OPERATOR BELIEVES IT MAY BE UNSAFE FOR ELEVATED EXHAUST TEMPERATURES. DUE TO AN ISSUE WITH THE LOGIC IN THE ECM SOFTWARE IN THESE ENGINES, THE SWITCH MAY NOT FUNCTION CORRECTLY, LEADING THE OPERATOR TO BELIEVE THAT THE SWITCH IS IN "INHIBIT" MODE WHEN IT IS NOT.
Remedy: PACCAR IS WORKING WITH CUMMINS TO REPAIR THE ENGINES FREE OF CHARGE PLEASE SEE 09E-046. THE SAFETY RECALL BEGAN ON OCTOBER 1, 2009. OWNERS MAY CONTACT CUMMINS AT 1-800-DIESELS (1-800-343-7357).
135 vehicles affected