SC0437 – Steering Gear Assembled Incorrectly – 2021-2022 Mack Granite, Anthem, LR, Pinnacle, & Terrapro

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Mack Truck Inc. Safety Recall Date 08.2022 Page 1 of 5 Date Number Release Page 08.2022 SC0437 01 1(5) Sheppard Steering Gear AN, GR, LR, LRBE, PI, TE RECALL INFORMATION (August 2022) Mack Trucks has determined that certain model year 2022-2023 AN, GR, LR, LRBE, PI, TE Vehicles may have been assembled with a faulty Sheppard steering gear box. The faulty steering gears were assembled with fewer than required recirculating balls which can lead to fracture in the steering gear worm shaft. In some cases, the balls may align on the same side of the worm shaft and concentrated loads may cause the steering gear internal parts to fracture resulting in a possible loss of the vehicle steering. Mack Trucks has not received any complaints or reports of vehicle crashes because of this safety issue. To ensure the safety of these vehicle follow the repair instructions outlined in this document to inspect the Sheppard steering gear, by serial number, and as necessary replace the steering gear. VEHICLES AFFECTED Certain Mack Trucks manufactured between June 08, 2021, and March 11, 2022. VEHICLE QUANTITY There are 6,128 vehicles affected by this recall. (5,644 US,293 Canada and 221 Export) S A F E T Y R E C A L L Mack Trucks Inc. Greensboro, NC USA Mack Truck Inc. Safety Recall Date 08.2022 Page 2 of 5 Parts Information Ordering Process: An email is required to order the steering gear. Email campaign@macktrucks.com and include the following in the body of the email: ▪ VIN of vehicle being repaired ▪ Dealer ID number ▪ Recall Number ▪ PO number ▪ Sheppard serial number stamped on the steering gear. ▪ Mack part number found in Impact. A response will be provided within 24 hours. during normal business hours. Order the hexagon screw and the nut retainer through the normal ordering process. Part Number Part Description Quantity Use Impact Steering Gear 1, as needed from inspection 25106380 Hexagon screw 1, as needed from inspection 25098472 Nut retainer 1, as needed from inspection Important Note The steering gears are on mandatory return. Repair Instructions Inspection 1. Secure vehicle for service. 2. Place the transmission in park or neutral. 3. Install wheel chocks. 4. Unlatch and raise the hood. 5. Locate the Sheppard steering gear serial number following the instructions below. • There are two different steering gear box configurations. (See below) Important Note It is not necessary to remove the steering gear box to locate the serial number. Mack Truck Inc. Safety Recall Date 08.2022 Page 3 of 5 6. Some configurations the serial number is between the steering gear and the frame. It may be necessary to turn the wheels, so the pitman arm moves out of the way. Important Note If the serial number or part number cannot be easily read due to paint application, gently scrape the number(s) with a flathead screwdriver, wire brush, or emery cloth, or apply acetone. Too much intervention may cause the numbers and letters to be illegible. 7. Record the Sheppard steering gear serial number. 8. Use the provided URL https://recall.rhsheppard.com access the Sheppard Steering Gear Classification Tool. 9. Once in the Classification Tool, choose Volvo/Mack from the drop-down menu, enter the Sheppard steering gear 8-digit serial number, and then click search. Mack Truck Inc. Safety Recall Date 08.2022 Page 4 of 5 • Vehicles with a “Good” steering gear serial number can be returned to service with no further remedy action required. Complete all paperwork and return to service. • Vehicles with a steering gear serial number identified as “Suspect” will require removal and replacement. The Sheppard steering gear serial number and Impact part number will be required for parts ordering. Important Note A “Not Found” serial number indicates circumstances such as a possible character input error by the individual conducting the inspection or some other unique situation. If you need assistance with locating or deciphering the steering gear serial number and/or part number, refer to the Identification Guideline found in the Classification Tool, email steering22@rh-sheppard.com or telephone the Sheppard Steering Gear Recall Action Line, toll-free, at 1-877-409-9869 Replacement 1. For replacement of steering gear box, use the VIN of the vehicle you are working on and follow Impact operation 6421-03-02-01 Steering Gear, Replacement. Mack Truck Inc. Safety Recall Date 08.2022 Page 5 of 5 REIMBURSEMENT This repair is covered by an authorized Safety Recall. Reimbursement is obtained through the normal claim handling process. UCHP Reimbursement Claim Type (used only when uploading from the Dealer Business System) 40 Recall Status Vehicle repaired per instructions 1-Modified per instructions Labor Codes Primary Labor Code: Inspection 1720-16-09-01 General, Campaign 0.1 x 3 SRT 0.3 hrs. If Applicable Replacement 6421-03-02-01 Steering Gear Replacement (Use VIN specific time from Impact) Time varies per model, see Impact Causal Part 21129326 Authorization Number C6643 Note: Dealers are to perform Safety Recalls on all subject vehicles at no charge to the vehicle owner regardless of mileage, age of vehicle or ownership (original purchaser or subsequent purchasers). Whenever vehicles are subject to a Safety Recall are brought to your dealership for service, or taken into your dealership vehicle inventory, it is strongly recommended that every effort be made to perform the recall correction before the vehicle is sold or released to the owner.

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SC0437_OWNER_LTR July 2022 DEAR MACK TRUCK OWNER: This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act. Mack Trucks, Inc. has decided that a defect which relates to motor vehicle safety may exist in certain 2022-2023 Mack Anthem, Pinnacle, Granite, LR, TerraPro vehicles manufactured June 1, 2021 through March 11, 2022. SAFETY DEFECT: On certain trucks, the steering gear may not have been assembled correctly. As a result, the steering gear could break and cause a loss of steering. SAFETY RISK: A loss of steering control could create the risk of a crash. PRECAUTIONS YOU CAN TAKE: TIME REQUIRED FOR THE REPAIR: There are no precautions you can take other than having your vehicle repaired by a Mack Parts and Service Center. The time required to inspect and/or repair your vehicle is approximately 2 – 4 hours. WHAT YOU SHOULD DO: You should contact the nearest Mack Parts and Service Center and make an appointment. The Mack dealer will inspect and replace the steering gear if needed at no cost to you. You can locate the closest Mack Parts and Service Center by going on line to http://www.macktrucks.com/ and selecting “Dealer & Service Locations” or by calling our toll-free number: 1-800-866-1177. IMPORTANT SAFETY RECALL SC0437 NHTSA RECALL # 22V-401 NOTICE REGARDING LEASED VEHICLES: If you are a Lessor of vehicles subject to this Notice, you have an obligation under Federal Law to provide a copy of this Notice to all Lessees within 10 days of your receipt of this Notice. Further, you must maintain a record, which identifies the Lessee(s) to whom you send a copy of this letter, the date you send this letter, and the Vehicle Identification Number(s) of the vehicle(s) that you have leased to that lessee. For purposes of this Notice, the term Lessor means: a person or entity that is the owner, as reflected on the vehicle’s title, of any five or more leased vehicles (as defined in CFR Section 577.4), as of the date of notification by the manufacturer of the existence of a safety-related defect or non-compliance with a Federal Motor Vehicle Safety Standard in one or more of the leased motor vehicles. OWNER RECALL RESPONSE CARD: The enclosed “Notice of Vehicle Recall” identifies your vehicle. If you no longer own the vehicle, please help us update our records by completing the “Vehicle Disposition Record” portion of the enclosed postage-free Notice of Mandatory Safety Campaign card and mailing it back to us. ASSISTANCE/ COMPLAINTS: PRE NOTIFICATION REMEDIES: If your vehicle has not been repaired within a reasonable time after delivering it to a Mack Parts and Service Center, please contact: Mack Trucks, Inc. Regulatory Affairs Department, P.O. Box 26115 Greensboro, NC 27402-6115 vtna.regulatoryaffairs@volvo.com You may also submit complaints to the Administrator of the National Highway Traffic Safety Administration (1200 New Jersey Avenue, S.E., Washington DC 20590 or call the toll-free Auto Safety Hot Line at 1-888-327-4236 (TTY: 1-800-424-9153), or go to http://www.safercar.gov if you believe that Mack has failed to remedy the defect without charge, or has failed to remedy the vehicle within 60 days of the owners first tender to obtain repair following the earliest time that parts are available. If you have previously paid for repairs as a result of this issue, you may be entitled to recovery of those expenses. Submit copies of all documentation supporting your claim according to the rules specified in the “General Plan for Reimbursement of Pre-notification Remedies” provided in this mailing. We regret any inconvenience this may cause to your operation, but hope you will appreciate our sincere efforts to demonstrate Mack’s commitment to provide our customers with the best possible product. MACK TRUCKS, INC.

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MACK TRUCKS RECALL ALERT © Mack Trucks, Inc. CONFIDENTIAL – For limited distribution only to circulation list above. This bulletin, and any information herein, is subject to change by Company without notice. For the most current and accurate information, always refer to Trucks Dealer Portal for the electronic version of this document. Description On certain vehicles, the steering gear was assembled with fewer than the required number of recirculating balls which can lead to a fracture in the steering gear worm-shaft. A steering gear with fewer than the required number of recirculating balls may bind when loads are applied. In some cases, the balls may align on the same side of the gear’s worm-shaft and concentrated loads may cause the gear’s internal parts to fracture resulting in a possible loss of vehicle steering. Loss of steering increases the risk of a crash. The repair for this issue is under development at this time. Model and Model Years Affected • Certain 2022-2023 Mack Anthem, Pinnacle, Granite, LR, TerraPro vehicles manufactured June 1, 2021 through March 11, 2022. Vehicle Quantities • 6,643 vehicles (6,023 US, 293 Canada and 327 export) 6,128 vehicles (5,644 US, 293 Canada and 221 export) Dealer Responsibilities • The National Traffic and Motor Vehicle Safety Act and Canadian Motor Vehicle Safety Act require dealers to ensure that all new and used vehicles are free of safety defects and comply with all relevant safety standards at the time of delivery to the consumer. • Dealers should make their personnel aware of the safety recall. In the event that a dealer has a vehicle included in the safety recall in their inventory to be sold, the condition must be corrected before releasing it to a customer. Notification Release Schedule • Vehicle list will be posted on the Trucks Dealer Portal June 10, 2022. • Owner notification letters will be released on or before July 29, 2022. Contact If you have questions or concerns about this recall, contact the Regulatory Affairs Department at vtna.regulatoryaffairs@volvo.com. Subject: Safety Recall SC0437, Bendix (Sheppard Steering Gear Recall) Recall Number: SRA-M437 (rev. 6/28/22) Date: June 28, 2022 Applicable Markets: ☒U.S. ☒Canada ☒ Export

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MACK TRUCKS RECALL ALERT © Mack Trucks, Inc. CONFIDENTIAL – For limited distribution only to circulation list above. This bulletin, and any information herein, is subject to change by Company without notice. For the most current and accurate information, always refer to Trucks Dealer Portal for the electronic version of this document. Description On certain vehicles, the steering gear was assembled with fewer than the required number of recirculating balls which can lead to a fracture in the steering gear worm-shaft. A steering gear with fewer than the required number of recirculating balls may bind when loads are applied. In some cases, the balls may align on the same side of the gear’s worm-shaft and concentrated loads may cause the gear’s internal parts to fracture resulting in a possible loss of vehicle steering. Loss of steering increases the risk of a crash. The repair for this issue is under development at this time. Model and Model Years Affected • Certain 2022-2023 Mack Anthem, Pinnacle, Granite, LR, TerraPro vehicles manufactured June 1, 2021 through March 11, 2022. Vehicle Quantities • 6,643 vehicles (6,023 US, 293 Canada and 327 export) Dealer Responsibilities • The National Traffic and Motor Vehicle Safety Act and Canadian Motor Vehicle Safety Act require dealers to ensure that all new and used vehicles are free of safety defects and comply with all relevant safety standards at the time of delivery to the consumer. • Dealers should make their personnel aware of the safety recall. In the event that a dealer has a vehicle included in the safety recall in their inventory to be sold, the condition must be corrected before releasing it to a customer. Notification Release Schedule • Vehicle list will be posted on the Trucks Dealer Portal June 10, 2022. • Owner notification letters will be released on or before July 29, 2022. Contact If you have questions or concerns about this recall, contact the Regulatory Affairs Department at vtna.regulatoryaffairs@volvo.com. Subject: Safety Recall SC0437, Bendix (Sheppard Steering Gear Recall) Recall Number: SRA-M437 Date: June 10, 2022 Applicable Markets: ☒U.S. ☒Canada ☒ Export

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-401 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mack Trucks, Inc. Submission Date : JUN 29, 2022 NHTSA Recall No. : 22V-401 Manufacturer Recall No. : SC0437 Manufacturer Information : Manufacturer Name : Mack Trucks, Inc. Address : 2100 Mack Boulevard PO Box M Allentown PA 18105-5000 Company phone : 610-709-2131 Population : Number of potentially involved : 5,644 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2021-2022 Mack Granite, Anthem, LR, Pinnacle Terrapro Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Based upon information provided by Sheppard on their production dates, a suspect population was identified at Volvo based upon our production dates using our material systems timing and offsets. Production Dates : JUN 01, 2021 – MAR 11, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Steering gear was assembled with fewer than the required number of recirculating balls which can lead to a fracture in the steering gear worm-shaft and loss of vehicle steering. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Steering gear was assembled with fewer than the required number of recirculating balls which can lead to a fracture in the steering gear wormshaft and loss of vehicle steering. Description of the Cause : NR Identification of Any Warning that can Occur : Preceding the internal fracture, the steering may be perceived as strained by the driver. No audible or visual warning is available. Involved Components : Part 573 Safety Recall Report 22V-401 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Steering Gear Component Description : HD Steering Gear for trucks Component Part Number : 23986581, 21129326, 23851030, 23851036, 23851046, 23851032, 23056973, 24008407, 23851052, 22396595, Supplier Identification : Component Manufacturer Name : R.H. SHEPPARD CO., INC. Address : 101 Philadelphia Street P.O. Box 877 Hanover Pennsylvania 17331-0877 Country : United States Chronology : Volvo on June 3, 2022 is informed by RH Sheppard (Bendix) that they have filed a 573 Safety Recall Report 22E-047. Volvo Product Safety Working Group met on Monday June 6, 2022 and determined that this should be elevated to the Volvo Product Safety Committee as a Safety Related Defect. June 7, 2022 Volvo Product Safety determined that this is a safety related defect. June 7, 2022 Volvo Files 573 Report. No warranty claims, field or service reports are associated with this filing. Description of Remedy : Description of Remedy Program : A remedy program is under development. The 573 will be amended once an inspection and remedy plan has been developed. ANY PRENOTIFICATION REMEDIES PERFORMED OUTSIDE DEALER NETWORK ARE COVERED UNDER MACK’S PRE-NOTIFICATION REMEDY PROGRAM. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : NR Planned Dealer Notification Date : JUN 10, 2022 – JUN 10, 2022 Planned Owner Notification Date : JUL 29, 2022 – JUL 29, 2022 Part 573 Safety Recall Report 22V-401 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-401 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mack Trucks, Inc. Submission Date : JUN 07, 2022 NHTSA Recall No. : 22V-401 Manufacturer Recall No. : SC0437 Manufacturer Information : Manufacturer Name : Mack Trucks, Inc. Address : 2100 Mack Boulevard PO Box M Allentown PA 18105-5000 Company phone : 610-709-2131 Population : Number of potentially involved : 6,023 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2021-2022 Mack Granite, Anthem, LR, Pinnacle Terrapro Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Based upon information provided by Sheppard on their production dates, a suspect population was identified at Volvo based upon our production dates using our material systems timing and offsets. Production Dates : JUN 01, 2021 – MAR 11, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Steering gear was assembled with fewer than the required number of recirculating balls which can lead to a fracture in the steering gear worm-shaft and loss of vehicle steering. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Steering gear was assembled with fewer than the required number of recirculating balls which can lead to a fracture in the steering gear wormshaft and loss of vehicle steering. Description of the Cause : NR Identification of Any Warning that can Occur : Preceding the internal fracture, the steering may be perceived as strained by the driver. No audible or visual warning is available. Involved Components : Part 573 Safety Recall Report 22V-401 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Steering Gear Component Description : HD Steering Gear for trucks Component Part Number : 23986581, 21129326, 23851030, 23851036, 23851046, 23851032, 23056973, 24008407, 23851052, 22396595, Supplier Identification : Component Manufacturer Name : R.H. SHEPPARD CO., INC. Address : 101 Philadelphia Street P.O. Box 877 Hanover Pennsylvania 17331-0877 Country : United States Chronology : Volvo on June 3, 2022 is informed by RH Sheppard (Bendix) that they have filed a 573 Safety Recall Report 22E-047. Volvo Product Safety Working Group met on Monday June 6, 2022 and determined that this should be elevated to the Volvo Product Safety Committee as a Safety Related Defect. June 7, 2022 Volvo Product Safety determined that this is a safety related defect. June 7, 2022 Volvo Files 573 Report. No warranty claims, field or service reports are associated with this filing. Description of Remedy : Description of Remedy Program : A remedy program is under development. The 573 will be amended once an inspection and remedy plan has been developed. ANY PRENOTIFICATION REMEDIES PERFORMED OUTSIDE DEALER NETWORK ARE COVERED UNDER MACK’S PRE-NOTIFICATION REMEDY PROGRAM. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : NR Planned Dealer Notification Date : JUN 10, 2022 – JUN 10, 2022 Planned Owner Notification Date : JUL 29, 2022 – JUL 29, 2022 Part 573 Safety Recall Report 22V-401 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-401 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mack Trucks, Inc. Submission Date : JUL 29, 2022 NHTSA Recall No. : 22V-401 Manufacturer Recall No. : SC0437 Manufacturer Information : Manufacturer Name : Mack Trucks, Inc. Address : 2100 Mack Boulevard PO Box M Allentown PA 18105-5000 Company phone : 610-709-2131 Population : Number of potentially involved : 5,644 Estimated percentage with defect : 1 % Vehicle Information : Vehicle 1 : 2021-2022 Mack Granite, Anthem, LR, Pinnacle Terrapro Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : Based upon information provided by Sheppard on their production dates, a suspect population was identified at Mack based upon our production dates using our material systems timing and offsets. Production Dates : JUN 01, 2021 – MAR 11, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : Steering gear was assembled with fewer than the required number of recirculating balls which can lead to a fracture in the steering gear worm-shaft and loss of vehicle steering. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Steering gear was assembled with fewer than the required number of recirculating balls which can lead to a fracture in the steering gear wormshaft and loss of vehicle steering. Description of the Cause : NR Identification of Any Warning that can Occur : Preceding the internal fracture, the steering may be perceived as strained by the driver. No audible or visual warning is available. Involved Components : Part 573 Safety Recall Report 22V-401 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Steering Gear Component Description : HD Steering Gear for trucks Component Part Number : 23986581, 21129326, 23851030, 23851036, 23851046, 23851032, 23056973, 24008407, 23851052, 22396595, Supplier Identification : Component Manufacturer Name : R.H. SHEPPARD CO., INC. Address : 101 Philadelphia Street P.O. Box 877 Hanover Pennsylvania 17331-0877 Country : United States Chronology : Volvo on June 3, 2022 is informed by RH Sheppard (Bendix) that they have filed a 573 Safety Recall Report 22E-047. Volvo Product Safety Working Group met on Monday June 6, 2022 and determined that this should be elevated to the Volvo Product Safety Committee as a Safety Related Defect. June 7, 2022 Volvo Product Safety determined that this is a safety related defect. June 7, 2022 Volvo Files 573 Report. No warranty claims, field or service reports are associated with this filing. Description of Remedy : Description of Remedy Program : ANY PRE-NOTIFICATION REMEDIES PERFORMED OUTSIDE DEALER NETWORK ARE COVERED UNDER MACK’S PRE-NOTIFICATION REMEDY PROGRAM. Steering gears on trucks will be inspected for the unique serial number imprint on the recalled equipment. The steering gear serial number will then be looked up on RH Sheppard’s web based tool to be classified as suspect and to be replaced or as not-suspect and may remain in service. How Remedy Component Differs from Recalled Component : As reported by RH Sheppard, the remedy component was assembled after the recall condition was corrected in production when additional controls were put in place. The remedy component has been verified to have the correct number of recirculating ball. Each remedy component is identifiable by an imprinted unique serial number. Part 573 Safety Recall Report 22V-401 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Identify How/When Recall Condition was Corrected in Production : As reported by RH Sheppard, On Feb 10, 2022 the recirculating ball insertion process control was enhanced. Additional process controls and inspectors were added to the process to verify that the correct number of recirculating balls in each steering gear. By truck manufacturing date Mack has a clean point established (any suspect gears removed from factory) as of March 11, 2022. . Any truck which has a manufacturing date after this or that has been inspected for suspect steering gears at our factory were removed from scope of the recall Recall Schedule : Description of Recall Schedule : August 1, the remedy will be available to Mack Customers. Planned Dealer Notification Date : JUN 10, 2022 – JUN 10, 2022 Planned Owner Notification Date : JUL 29, 2022 – JUL 29, 2022 * NR – Not Reported

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