SCC0435 – Insufficient Air Volume – 2022 Mack Granite

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Date Number Release Page 05.2022 SC0435 01 1(7) Granite Insufficient Air Volume GR RECALL INFORMATION (May 2022) Mack has determined that certain model year 2023 GR Vehicles were built using an incorrect air volume calculation. This issue is a result of an internal systems calculation table that was providing an incorrect baseline for a subset of vehicles. Air Volume calculation for system air is 8% below the “12 Times the combined volume of all service brake chambers” and is a noncompliance with FMVSS 121. Mack Trucks has not received any complaints or reports of vehicle crashes because of this safety issue. To ensure that these vehicles meet Mack’s stringent quality requirements, follow the instructions outlined below to relocate air tank bracket, install new air tank, and reroute the air lines. VEHICLES AFFECTED Certain Mack North America vehicles manufactured between January 10, 2022, and March 01, 2022.VEHICLE QUANTITY There are 14 vehicles affected by this recall. (14 U.S.) SAFETY RECALL Mack Trucks Inc. Greensboro, NC USA Page 2 of 7 Important There are two different air tank configurations for this recall. A: is two tanks mounted in frame. B: is three tanks mounted in frame. If you have a two-tank configuration, please follow the instructions below to install a bigger secondary in frame air tank. If you have a three-tank configuration, please reach out to the reliability group by emailing reliability@volvo.com for repair instructions, parts list, and claiming information. Parts Part Number Description Quantity 23895292 In-frame Air Tank 1 60111755 Bolt 3 992328 Nut 3 Repair Instructions 1. Park the vehicle on a level surface. 2. Apply the parking brake. 3. Place the gear lever in neutral. 4. Install the wheel chocks. Mack Truck Inc. Safety Recall Date 05.2022 Page 3 of 7 5.Disconnect the cable from the negative terminal. 6.Drain the compressed air tanks. Page 4 of 7 7. Locate the position 4 (secondary) air tank. 8. Disconnect all air lines for the tank. 9. Loosen tank straps and remove tank. 10. Transfer all air fittings from the old tank to the new tank. 11. Remove the rear air tank mounting bracket and hardware. Mack Truck Inc. Safety Recall Date 05.2022 Page 5 of 7 12. Drill 3 new mounting holes 250mm behind the existing ones. (See Image below) 13. Install old mounting hardware back in existing holes and torque to spec. 14. Install old tank mounting bracket in new holes, attach with new hardware and torque to spec. Tightening Torque M-14 mounting hardware 140 ± 25 Nm (103 ± 18 ft-lb) 15. Install new air tank into frame and torque straps to spec. Tightening Torque Air tank strap, screw 11.3 ± 5 Nm (8 ± 4 ft-lb) 16. Reconnect all air lines to tank. Note If the airlines do not reach the new tank they should be replace with the correct length. 17. Install drain valve into tank and secure the s-hook lanyard back to the frame. Page 6 of 7 18.Connect the cable to the negative terminal. 19.Start engine and build up air pressure to governor cutout. 20.Shut off engine and check for any audible air leaks. 21.Release truck back into service. Mack Truck Inc. Safety Recall Date 05.2022 Page 7 of 7 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 5621-03-02-01 Air tank, Replacement 0.8 1720-16-09-01 Campaign, General 0.1 x 10 qty = 1.0hr 1.0 Causal Part 22945817 Authorization Number C6642 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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SC0435_OWNER_LTR May 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 2023 Mack Granite model vehicles built January 11, 2022 through February 2, 2022. SAFETY DEFECT: Air Volume calculation for system air is 8 % below the “12 Times the combined volume of all service brake chambers”. SAFETY RISK: The risk is a vehicle crash that may result in personal injury. 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 1 hour. WHAT YOU SHOULD DO: You should contact the nearest Mack Parts and Service Center and make an appointment. Mack dealer will install new air tanks which will increase the volume of air to meet the requirements 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 SC0435 NHTSA RECALL # 22V-295 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 This issue is a result of an internal systems calculation table that was providing an incorrect baseline for a subset of vehicles. Air Volume calculation for system air is 8 % below the “12 Times the combined volume of all service brake chambers”. This is a noncompliance with FMVSS 121. The remedy is still under developement. Model and Model Years Affected  Certain 2023 Mack Granite model vehicles built January 11, 2022 through February 2, 2022. Vehicle Quantities  14 all US 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 on May 6, 2022  Owner notification letters will be released on or before July 1, 2022 Contact If you have questions or concerns about this recall, contact the Regulatory Affairs Department at vtna.regulatoryaffairs@volvo.com. Subject: Safety Recall SC0435, Mack Granite Insuffient Air Volume Recall Number: SRA-M435 Date: May 6, 2022 Applicable Markets: ☒U.S. ☐Canada ☐ Export

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-295 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mack Trucks, Inc. Submission Date : MAY 10, 2022 NHTSA Recall No. : 22V-295 Manufacturer Recall No. : SCC 0435 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 : 14 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2023-2023 Mack Granite Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : The recall population was determined by those vehicles which had a calculation error in running the air volume requirement. 14 Mack Granite Trucks 2022 MY Production Dates : JAN 11, 2022 – FEB 02, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Noncompliance : Description of the Noncompliance : Air Volume calculation for system air is 8 % below the “12 Times the combined volume of all service brake chambers” FMVSS 1 : 121 – Air brake systems FMVSS 2 : NR Description of the Safety Risk : The risk is a vehicle crash that may result in personal injury. Description of the Cause : Air volume calculation table had an incorrect baseline for a subset of vehicles. Identification of Any Warning that can Occur : NR Involved Components : Part 573 Safety Recall Report 22V-295 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : No Specific Component Component Description : NR Component Part Number : NR Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : On April 21st, 2022 Mack Assembly Plant notifies Product Safety Working Group Member of a potential calculation issue related to air volume calculations. All potentially impacted vehicles are put on hold at Mack Assembly Plant. April 25, 2022 Product Safety Working Group meets and decides to raise issue to Product Safety Committee. April 28, 2022 Product Safety Committee determines that a product non-compliance related to FMVSS 121 exists. Description of Remedy : Description of Remedy Program : Repairs made prior to notification will be addressed according to Mack’s General Reimbursement Plan on file with NHTSA. How Remedy Component Differs from Recalled Component : New air tanks will be installed which will increase the volume of air to meet the requirements. Identify How/When Recall Condition was Corrected in Production : Effected vehicles at our factory were addressed same day, corrective action for those were taken. No additional action to those vehicles that have been released. Recall Schedule : Description of Recall Schedule : Dealers will be notified through a safety recall alert, by May 6 2022, Owner Notification will be process on or before July 1 2022. Planned Dealer Notification Date : MAY 06, 2022 – MAY 06, 2022 Planned Owner Notification Date : JUL 01, 2022 – JUL 01, 2022 Part 573 Safety Recall Report 22V-295 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-295 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mack Trucks, Inc. Submission Date : MAY 03, 2022 NHTSA Recall No. : 22V-295 Manufacturer Recall No. : SCC 0435 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 : 14 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2022-2022 Mack Granite Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : The recall population was determined by those vehicles which had a calculation error in running the air volume requirement. 14 Mack Granite Trucks 2022 MY Production Dates : JAN 11, 2022 – FEB 02, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Noncompliance : Description of the Noncompliance : Air Volume calculation for system air is 8 % below the “12 Times the combined volume of all service brake chambers” FMVSS 1 : 121 – Air brake systems FMVSS 2 : NR Description of the Safety Risk : The risk is a vehicle crash that may result in personal injury. Description of the Cause : Air volume calculation table had an incorrect baseline for a subset of vehicles. Identification of Any Warning that can Occur : NR Involved Components : Part 573 Safety Recall Report 22V-295 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : No Specific Component Component Description : NR Component Part Number : NR Supplier Identification : Component Manufacturer Name : NR Address : NR NR Country : NR Chronology : On April 21st, 2022 Mack Assembly Plant notifies Product Safety Working Group Member of a potential calculation issue related to air volume calculations. All potentially impacted vehicles are put on hold at Mack Assembly Plant. April 25, 2022 Product Safety Working Group meets and decides to raise issue to Product Safety Committee. April 28, 2022 Product Safety Committee determines that a product non-compliance related to FMVSS 121 exists. Description of Remedy : Description of Remedy Program : Repairs made prior to notification will be addressed according to Mack’s General Reimbursement Plan on file with NHTSA. How Remedy Component Differs from Recalled Component : New air tanks will be installed which will increase the volume of air to meet the requirements. Identify How/When Recall Condition was Corrected in Production : Effected vehicles at our factory were addressed same day, corrective action for those were taken. No additional action to those vehicles that have been released. Recall Schedule : Description of Recall Schedule : Dealers will be notified through a safety recall alert, by May 6 2022, Owner Notification will be process on or before July 1 2022. Planned Dealer Notification Date : MAY 06, 2022 – MAY 06, 2022 Planned Owner Notification Date : JUL 01, 2022 – JUL 01, 2022 Part 573 Safety Recall Report 22V-295 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-295 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mack Trucks, Inc. Submission Date : JUN 17, 2022 NHTSA Recall No. : 22V-295 Manufacturer Recall No. : SCC 0435 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 : 14 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2023-2023 Mack Granite Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : The recall population was determined by those vehicles which had a calculation error in running the air volume requirement. 14 Mack Granite Trucks 2022 MY Production Dates : JAN 11, 2022 – FEB 02, 2022 VIN Range 1 : Begin : NR End : NR Not sequential Description of Noncompliance : Description of the Noncompliance : Air Volume calculation for system air is 8 % below the “12 Times the combined volume of all service brake chambers” FMVSS 1 : 121 – Air brake systems FMVSS 2 : NR Description of the Safety Risk : The risk is a vehicle crash that may result in personal injury. Description of the Cause : Air volume calculation table had an incorrect baseline for a subset of vehicles. Identification of Any Warning that can Occur : NR Involved Components : Part 573 Safety Recall Report 22V-295 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : No Specific Component Component Description : This was a calculation error involving multiple components Component Part Number : This was a calculation error involving multiple component Supplier Identification : Component Manufacturer Name : Volvo Address : NR North Carolina Country : United States Chronology : On April 21st, 2022 Mack Assembly Plant notifies Product Safety Working Group Member of a potential calculation issue related to air volume calculations. All potentially impacted vehicles are put on hold at Mack Assembly Plant. April 25, 2022 Product Safety Working Group meets and decides to raise issue to Product Safety Committee. April 28, 2022 Product Safety Committee determines that a product non-compliance related to FMVSS 121 exists. Description of Remedy : Description of Remedy Program : Repairs made prior to notification will be addressed according to Mack’s General Reimbursement Plan on file with NHTSA. How Remedy Component Differs from Recalled Component : New air tanks will be installed which will increase the volume of air to meet the requirements. Identify How/When Recall Condition was Corrected in Production : Effected vehicles at our factory were addressed same day, corrective action for those were taken. No additional action to those vehicles that have been released. Recall Schedule : Description of Recall Schedule : Dealers will be notified through a safety recall alert, by May 6 2022, Owner Notification will be process on or before July 1 2022. Planned Dealer Notification Date : MAY 06, 2022 – MAY 06, 2022 Planned Owner Notification Date : JUL 01, 2022 – JUL 01, 2022 Part 573 Safety Recall Report 22V-295 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 * NR – Not Reported

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