22KWB – Steering Fasteners May Fail – 2018-2020 Kenworth T270, T370, T440, T470, T660, T680, T880, T800, W900, W990

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Customer Service Department Kenworth Truck Company P.O. Box 1000 Kirkland, Washington 98083-1000 (425) 825-5888 Subject:Safety Recall 22KWB – Dana Front Axle Steer Arm Fasteners Presorted First-Class Mail U.S. Postage PAID Seattle, WA Permit No. 2389 TATFADTDFATFTDADAFFTFFTTTFAFADTFTDAAFTTATDDAAFDDDDTTADFTDATTATFDD IMPORTANT SAFETY RECALL 1 ## # RECALL NOTICE November 11, 2022 IMPORTANT SAFETY RECALL This notice applies to your vehicle; VIN: This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Subject: Safety Recall 22KWB – Dana Front Axle Steer Arm Fasteners NHTSA Recall number 22V27 Dear Kenworth Customer, Kenworth Truck Company has decided that a defect which relates to motor vehicle safety exists in certain Model Year 2018-2021 T170, T270, T370, T440/T470, T680, T800, T880, W900, and W990 chassis built from 08/01/2017 through 05/31/2019 equipped with a Dana D-Series front axle. The Dana D-Series axle steer arm fasteners that attach the steer arm to the steering knuckle may fail. These cases are understood to have occurred during low-speed maneuvering when steering forces are highest. The operator could be unaware of an issue until both fasteners fail and result in loss of steering control, increasing the risk of a crash or injury. Kenworth has initiated a recall to remedy the defect. Please contact your Kenworth dealer. To find your Kenworth dealer, please visit Dealer Locator at www.Kenworth.com. This repair may take up to 1.0 hour of labor depending on vehicle configuration and dealer scheduling. This repair will be performed at no charge to you. The problem is… The Dana DSeries axle steer arm fasteners that attach the steer arm to the steering knuckle may fail. What your dealer will do… Dealers will replace and torque the steer arm fasteners. What you must do … Contact your Kenworth Dealer to schedule an appointment for repair. If you had this inspection and/or repair performed before you received this letter, you may be eligible to receive reimbursement for the cost of obtaining a pre-notification remedy of the problem associated with this recall. Please contact your Kenworth dealer for more information. If you require further information about this recall, reimbursement of a pre-notification remedy associated with this recall or experience any difficulty in making arrangements for this repair, please contact Kenworth Customer Service using one of the following: Email: Kenworth.Campaigns@paccar.com with the bulletin number in the subject line or Mail: Kenworth Truck Company, P.O. Box 1000, Kirkland, WA 98083-1000, Attn: Customer Service Department or Phone: 425-828-5888 You may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., Washington, DC 20590, or call the toll-free Vehicle Safety Hotline at 1-888-327-4236 (TTY: 1-800-424-9153); or go to http://www.safercar.gov, if you believe that the manufacturer or dealer failed or was unable to remedy the defect without charge within a reasonable time following the earliest date upon which replacement parts and procedures become available. Federal regulation requires that any vehicle lessor receiving this recall notice must forward a copy of this notice to the lessee within ten days. If you no longer own this vehicle, we would appreciate your advising us of the new owner if you know their name. We regret any inconvenience that this work may cause you and appreciate your cooperation in this matter. Thank yo u, Annick Hollingsworth Director of Service Platforms Kenworth Truck Company

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; Customer Service Department If 1(1 ~ ~ ,w:• ] ►f •; I ~~~~~~~ 6~~ck Company Kirkland, Washington 98083-1000 A PA«AR COMPANY (425) 825-5888 IMPORTANT SAFETY RECALL INFORMATION Issued in Accordance With Federal Law *N*H**T*S A U.S. O.partm•nt of Tronsporto11on www,nhm.gov IMPORTANT SAFETY RECALL Interim Notification Subject:Safety Recall 22KWB – Dana Front Axle Steer Arm Fasteners Presorted First-Class Mail U.S. Postage PAID Seattle, WA Permit No . 2389 JJ m 0 )> rr z 0 –I 0 m June 23, 2022 Subject: Safety Recall 22KWB – Dana Front Axle Steer Arm Fasteners NHTSA Recall number 22V277 This notice applies to your vehicle; VIN: …._ ______ Dear Kenworth Customer, This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. &an this OR code to open the Kenworth Dealer Locator • • Kenworth Truck Company has decided that a defect which relates to motor vehicle safety exists in certain Model Year 2018-2020 T170, T270, T370, T440, T470, T680, T800, T880, W900, and W990 chassis built from 08/01/2017 through 05/31/2019 equipped with a Dana D-Series front axle. The Dana D-Series axle steer arm fasteners that attach the steer arm to the steering knuckle may fail. These cases are understood to have occurred during low speed maneuvering when steering forces are highest. The operator could be unaware of an issue with the steer arm fasteners, increasing the risk of a crash and/or personal injury. The purpose of this letter is to notify you that Kenworth has initiated a recall campaign to address the defect. At this time, the replacement parts and repair procedure are not yet available. You will be notified by mail when the parts and procedures become available, and you may schedule an appointment with a dealer to obtain the repair. The problem is … What your dealer will do … What you must do … The Dana D-Series axle steer arm fasteners that attach the steer arm to the steering knuckle may fail. When the repair procedure and parts are available, your dealer will replace the necessary parts per the decided repair procedure There is no action required on your part at this time. You will receive a letter notifying you when the repair procedure and parts are available. If you require further information about this recall, reimbursement of a pre-notification remedy associated with this recall or experience any difficulty in making arrangements for this repair, please contact Kenworth Customer Service using one of the following: Email: Kenworth.Campaigns@paccar.com with the bulletin number in the subject line or Mail: Kenworth Truck Company, P.O. Box 1000, Kirkland, WA 98083-1000, Attn: Customer Service Department or Phone:425-828-5888 You may submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E., Washington, DC 20590, or call the toll-free Vehicle Safety Hotline at 1-888-327-4236 (TTY: 1-800-424-9153); or go to http://www.safercar.gov, if you believe that the manufacturer or dealer failed or was unable to remedy the defect without charge within a reasonable time following the earliest date upon which replacement parts and procedures become available. Federal regulation requires that any vehicle lessor receiving this recall notice must forward a copy of th is notice to the lessee within ten days. If you no longer own th is vehicle, we would appreciate your advising us of the new owner if you know their name. We regret any inconvenience that this work may cause you and appreciate your cooperation in th is matter. Thank you, A,,~.-c,k. μu,’1/~~ Annick Hollingsworth Director of Service Platforms Kenworth Truck Company

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-277 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : PACCAR Incorporated Submission Date : APR 25, 2022 NHTSA Recall No. : 22V-277 Manufacturer Recall No. : 22 PBB and 22 KWB Manufacturer Information : Manufacturer Name : PACCAR Incorporated Address : 777 106TH AVENUE NORTHEAST BELLEVUE WA 98004 Company phone : 940 591 4220 Population : Number of potentially involved : 17,641 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2018-2020 Kenworth T270, T370, T440, T470, T660, T680, T800, T880, W900 and W990 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Recall population corresponds to production during build months associated with failed axles, plus 3 months after last build date for a known failed axle. Production Dates : AUG 01, 2017 – MAY 31, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2018-2020 Peterbilt 330, 337, 348, 365, 367, 389, 520, 567, 579 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Recall population corresponds to production in build months associated with failed axles, plus 3 months after last build date for a known failed axle. Production Dates : AUG 01, 2017 – MAY 31, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The Dana D-Series axle steer arm fasteners, that attach the steer arm to the steering knuckle, may fail. Reported failures occurred during low speed maneuvering operations when steering forces are highest. FMVSS 1 : NR FMVSS 2 : NR Part 573 Safety Recall Report 22V-277 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Safety Risk : Failure of both fasteners can result in a loss of steering control, which could increase the risk of a crash or injury. Description of the Cause : The cause is under investigation Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : Dana IADB (Integrated Air Disc Brake) D-Series ste Component Description : Dana IADB (Integrated Air Disc Brake) D-Series steer axle Component Part Number : B05-6041* Supplier Identification : Component Manufacturer Name : Dana, Inc Address : 3939 Technology Dr Maumee Ohio 43537 Country : United States Chronology : 8/10/2020: Safety & Compliance received notification of field failure 8/12/2020: Dana notified and requested parts to be sent to them 8/27/2020: Weekly meetings started with Dana 9/17/2020: First Dana bench test set up 9/25/2020: Issue discussed at NHTSA quarterly meeting 11/5/2020: Reviewed Dana bench testing and instrumented vehicle data 1/25/2021: Continued weekly reviews with Dana testing attempting to replicate field issues 2/3/2021: Update given to NHTSA during quarterly meeting 3/4/2021: Customer review list provided to Dana for inspections 3/26/2021: 1st customer Inspection completed with no issues found 4/20/2021: 2nd customer inspection completed, no issues found 5/20/2021: Revised Dana bench test set up reviewed 5/26/2021: Update given to NHTSA during quarterly meeting 6/3/2021: 3rd customer inspection completed, 118 truck inspected to date 6/24/2021: 4th & 5th customer inspections completed, 158 total inspections, no issues 7/8/2021: Dana took customer truck with previous failure for track instrumentation Part 573 Safety Recall Report 22V-277 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 8/12/2021: Non-failed knuckles returned from field to check bolt tension 9/3/2021: Update given to NHTSA during quarterly meeting 9/23/2021: Dana visited customer measured bolt tension and replaced bolts in 15 units 9/30/2021: Dana visited KW plant and measured many drag link angles 10/7/2021: Bench test suspended and to be reconfigured 12/9/2021: Bench test reconfigured and began running series of new tests 1/6/2022: 4 bench tests completed and 2 in progress 1/20/2022: RH turn testing suspended with high cycle count and no failures 2/17/2022: 7 LH tests complete and two in progress 3/3/2022: 12 LH tests completed and 1 in progress 3/16/2022: Update given to Joint Safety Committee 3/24/2022: Update given to NHTSA during quarterly meeting 3/31/2022: 17 LH tests completed and 2 in progress 4/14/2022: 29 LH tests completed including 5 E-series baseline tests and 1in progress. 4/18/2022: Joint Safety Committee determines a recall will be initiated Description of Remedy : Description of Remedy Program : The remedy program is under development. The 573 will be amended once a remedy has been developed and validated. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : Notification letters will be sent within 60 days Planned Dealer Notification Date : JUN 24, 2022 – JUN 24, 2022 Planned Owner Notification Date : JUN 24, 2022 – JUN 24, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-277 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : PACCAR Incorporated Submission Date : JUN 03, 2022 NHTSA Recall No. : 22V-277 Manufacturer Recall No. : 22 PBB and 22 KWB Manufacturer Information : Manufacturer Name : PACCAR Incorporated Address : 777 106TH AVENUE NORTHEAST BELLEVUE WA 98004 Company phone : 940 591 4220 Population : Number of potentially involved : 17,641 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2018-2020 Kenworth T270, T370, T440, T470, T660, T680, T800, T880, W900 and W990 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Recall population corresponds to production during build months associated with failed axles, plus 3 months after last build date for a known failed axle. Production Dates : AUG 01, 2017 – MAY 31, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2018-2020 Peterbilt 330, 337, 348, 365, 367, 389, 520, 567, 579 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Recall population corresponds to production in build months associated with failed axles, plus 3 months after last build date for a known failed axle. Production Dates : AUG 01, 2017 – MAY 31, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The Dana D-Series axle steer arm fasteners, that attach the steer arm to the steering knuckle, may fail. Reported failures occurred during low speed maneuvering operations when steering forces are highest. FMVSS 1 : NR FMVSS 2 : NR Part 573 Safety Recall Report 22V-277 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Safety Risk : Failure of both fasteners can result in a loss of steering control, which could increase the risk of a crash or injury. Description of the Cause : The cause is under investigation Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : Dana IADB (Integrated Air Disc Brake) D-Series ste Component Description : Dana IADB (Integrated Air Disc Brake) D-Series steer axle Component Part Number : B05-6041* Supplier Identification : Component Manufacturer Name : Dana, Inc Address : 3939 Technology Dr Maumee Ohio 43537 Country : United States Chronology : 8/10/2020: Safety & Compliance received notification of field failure 8/12/2020: Dana notified and requested parts to be sent to them 8/27/2020: Weekly meetings started with Dana 9/17/2020: First Dana bench test set up 9/25/2020: Issue discussed at NHTSA quarterly meeting 11/5/2020: Reviewed Dana bench testing and instrumented vehicle data 1/25/2021: Continued weekly reviews with Dana testing attempting to replicate field issues 2/3/2021: Update given to NHTSA during quarterly meeting 3/4/2021: Customer review list provided to Dana for inspections 3/26/2021: 1st customer Inspection completed with no issues found 4/20/2021: 2nd customer inspection completed, no issues found 5/20/2021: Revised Dana bench test set up reviewed 5/26/2021: Update given to NHTSA during quarterly meeting 6/3/2021: 3rd customer inspection completed, 118 truck inspected to date 6/24/2021: 4th & 5th customer inspections completed, 158 total inspections, no issues 7/8/2021: Dana took customer truck with previous failure for track instrumentation Part 573 Safety Recall Report 22V-277 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 8/12/2021: Non-failed knuckles returned from field to check bolt tension 9/3/2021: Update given to NHTSA during quarterly meeting 9/23/2021: Dana visited customer measured bolt tension and replaced bolts in 15 units 9/30/2021: Dana visited KW plant and measured many drag link angles 10/7/2021: Bench test suspended and to be reconfigured 12/9/2021: Bench test reconfigured and began running series of new tests 1/6/2022: 4 bench tests completed and 2 in progress 1/20/2022: RH turn testing suspended with high cycle count and no failures 2/17/2022: 7 LH tests complete and two in progress 3/3/2022: 12 LH tests completed and 1 in progress 3/16/2022: Update given to Joint Safety Committee 3/24/2022: Update given to NHTSA during quarterly meeting 3/31/2022: 17 LH tests completed and 2 in progress 4/14/2022: 29 LH tests completed including 5 E-series baseline tests and 1in progress. 4/18/2022: Joint Safety Committee determines a recall will be initiated Description of Remedy : Description of Remedy Program : The remedy program is under development. The 573 will be amended once a remedy has been developed and validated. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : Notification letters will be sent within 60 days Planned Dealer Notification Date : JUN 24, 2022 – JUN 24, 2022 Planned Owner Notification Date : JUN 24, 2022 – JUN 24, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-277 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : PACCAR Incorporated Submission Date : JUN 03, 2022 NHTSA Recall No. : 22V-277 Manufacturer Recall No. : 22 PBB and 22 KWB Manufacturer Information : Manufacturer Name : PACCAR Incorporated Address : 777 106TH AVENUE NORTHEAST BELLEVUE WA 98004 Company phone : 940 591 4220 Population : Number of potentially involved : 17,641 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2018-2020 Kenworth T270, T370, T440, T470, T660, T680, T800, T880, W900 and W990 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Recall population corresponds to production during build months associated with failed axles, plus 3 months after last build date for a known failed axle. Production Dates : AUG 01, 2017 – MAY 31, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2018-2020 Peterbilt 330, 337, 348, 365, 367, 389, 520, 567, 579 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Recall population corresponds to production in build months associated with failed axles, plus 3 months after last build date for a known failed axle. Production Dates : AUG 01, 2017 – MAY 31, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The Dana D-Series axle steer arm fasteners, that attach the steer arm to the steering knuckle, may fail. Reported failures occurred during low speed maneuvering operations when steering forces are highest. FMVSS 1 : NR FMVSS 2 : NR Part 573 Safety Recall Report 22V-277 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Safety Risk : Failure of both fasteners can result in a loss of steering control, which could increase the risk of a crash or injury. Description of the Cause : The cause is under investigation Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : Dana IADB (Integrated Air Disc Brake) D-Series ste Component Description : Dana IADB (Integrated Air Disc Brake) D-Series steer axle Component Part Number : B05-6041* Supplier Identification : Component Manufacturer Name : Dana, Inc Address : 3939 Technology Dr Maumee Ohio 43537 Country : United States Chronology : 8/10/2020: Safety & Compliance received notification of field failure 8/12/2020: Dana notified and requested parts to be sent to them 8/27/2020: Weekly meetings started with Dana 9/17/2020: First Dana bench test set up 9/25/2020: Issue discussed at NHTSA quarterly meeting 11/5/2020: Reviewed Dana bench testing and instrumented vehicle data 1/25/2021: Continued weekly reviews with Dana testing attempting to replicate field issues 2/3/2021: Update given to NHTSA during quarterly meeting 3/4/2021: Customer review list provided to Dana for inspections 3/26/2021: 1st customer Inspection completed with no issues found 4/20/2021: 2nd customer inspection completed, no issues found 5/20/2021: Revised Dana bench test set up reviewed 5/26/2021: Update given to NHTSA during quarterly meeting 6/3/2021: 3rd customer inspection completed, 118 truck inspected to date 6/24/2021: 4th & 5th customer inspections completed, 158 total inspections, no issues 7/8/2021: Dana took customer truck with previous failure for track instrumentation Part 573 Safety Recall Report 22V-277 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 8/12/2021: Non-failed knuckles returned from field to check bolt tension 9/3/2021: Update given to NHTSA during quarterly meeting 9/23/2021: Dana visited customer measured bolt tension and replaced bolts in 15 units 9/30/2021: Dana visited KW plant and measured many drag link angles 10/7/2021: Bench test suspended and to be reconfigured 12/9/2021: Bench test reconfigured and began running series of new tests 1/6/2022: 4 bench tests completed and 2 in progress 1/20/2022: RH turn testing suspended with high cycle count and no failures 2/17/2022: 7 LH tests complete and two in progress 3/3/2022: 12 LH tests completed and 1 in progress 3/16/2022: Update given to Joint Safety Committee 3/24/2022: Update given to NHTSA during quarterly meeting 3/31/2022: 17 LH tests completed and 2 in progress 4/14/2022: 29 LH tests completed including 5 E-series baseline tests and 1in progress. 4/18/2022: Joint Safety Committee determines a recall will be initiated Description of Remedy : Description of Remedy Program : The remedy program is under development. The 573 will be amended once a remedy has been developed and validated. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : Notification letters will be sent within 60 days Planned Dealer Notification Date : JUN 24, 2022 – JUN 24, 2022 Planned Owner Notification Date : JUN 24, 2022 – JUN 24, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-277 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : PACCAR Incorporated Submission Date : JUN 07, 2022 NHTSA Recall No. : 22V-277 Manufacturer Recall No. : 22 PBB and 22 KWB Manufacturer Information : Manufacturer Name : PACCAR Incorporated Address : 777 106TH AVENUE NORTHEAST BELLEVUE WA 98004 Company phone : 940 591 4220 Population : Number of potentially involved : 17,641 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2018-2020 Kenworth T270, T370, T440, T470, T660, T680, T800, T880, W900 and W990 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Recall population corresponds to production during build months associated with failed axles, plus 3 months after last build date for a known failed axle. Production Dates : AUG 01, 2017 – MAY 31, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Vehicle 2 : 2018-2020 Peterbilt 330, 337, 348, 365, 367, 389, 520, 567, 579 Vehicle Type : Body Style : Power Train : NR Descriptive Information : Recall population corresponds to production in build months associated with failed axles, plus 3 months after last build date for a known failed axle. Production Dates : AUG 01, 2017 – MAY 31, 2019 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : The Dana D-Series axle steer arm fasteners, that attach the steer arm to the steering knuckle, may fail. Reported failures occurred during low speed maneuvering operations when steering forces are highest. FMVSS 1 : NR FMVSS 2 : NR Part 573 Safety Recall Report 22V-277 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of the Safety Risk : Failure of both fasteners can result in a loss of steering control, which could increase the risk of a crash or injury. Description of the Cause : The cause is under investigation Identification of Any Warning that can Occur : NR Involved Components : Component Name 1 : Dana IADB (Integrated Air Disc Brake) D-Series ste Component Description : Dana IADB (Integrated Air Disc Brake) D-Series steer axle Component Part Number : B05-6041* Supplier Identification : Component Manufacturer Name : Dana, Inc Address : 3939 Technology Dr Maumee Ohio 43537 Country : United States Chronology : 8/10/2020: Safety & Compliance received notification of field failure 8/12/2020: Dana notified and requested parts to be sent to them 8/27/2020: Weekly meetings started with Dana 9/17/2020: First Dana bench test set up 9/25/2020: Issue discussed at NHTSA quarterly meeting 11/5/2020: Reviewed Dana bench testing and instrumented vehicle data 1/25/2021: Continued weekly reviews with Dana testing attempting to replicate field issues 2/3/2021: Update given to NHTSA during quarterly meeting 3/4/2021: Customer review list provided to Dana for inspections 3/26/2021: 1st customer Inspection completed with no issues found 4/20/2021: 2nd customer inspection completed, no issues found 5/20/2021: Revised Dana bench test set up reviewed 5/26/2021: Update given to NHTSA during quarterly meeting 6/3/2021: 3rd customer inspection completed, 118 truck inspected to date 6/24/2021: 4th & 5th customer inspections completed, 158 total inspections, no issues 7/8/2021: Dana took customer truck with previous failure for track instrumentation Part 573 Safety Recall Report 22V-277 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 8/12/2021: Non-failed knuckles returned from field to check bolt tension 9/3/2021: Update given to NHTSA during quarterly meeting 9/23/2021: Dana visited customer measured bolt tension and replaced bolts in 15 units 9/30/2021: Dana visited KW plant and measured many drag link angles 10/7/2021: Bench test suspended and to be reconfigured 12/9/2021: Bench test reconfigured and began running series of new tests 1/6/2022: 4 bench tests completed and 2 in progress 1/20/2022: RH turn testing suspended with high cycle count and no failures 2/17/2022: 7 LH tests complete and two in progress 3/3/2022: 12 LH tests completed and 1 in progress 3/16/2022: Update given to Joint Safety Committee 3/24/2022: Update given to NHTSA during quarterly meeting 3/31/2022: 17 LH tests completed and 2 in progress 4/14/2022: 29 LH tests completed including 5 E-series baseline tests and 1in progress. 4/18/2022: Joint Safety Committee determines a recall will be initiated Description of Remedy : Description of Remedy Program : The remedy program is under development. The 573 will be amended once a remedy has been developed and validated. Once a remedy is identified, it will be made available free of charge to affected owners. Owners who incurred costs to obtain a remedy for the problem addressed by the recall in advance of receiving notification may seek reimbursement through the process outlined in the general reimbursement plan on file.” How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : Notification letters will be sent within 60 days Planned Dealer Notification Date : JUN 24, 2022 – JUN 24, 2022 Planned Owner Notification Date : JUN 24, 2022 – JUN 24, 2022 * NR – Not Reported

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