SC0448 – Low Turn Signal Visibility – 2015-2023 Mack GU & GR

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-600 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mack Trucks, Inc. Submission Date : AUG 25, 2023 NHTSA Recall No. : 23V-600 Manufacturer Recall No. : SC0448 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 : 27,418 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2015-2023 Mack GU/GR Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : OTHER Power Train : DIESEL Descriptive Information : The population was determined based on a study of front turn signal angle visibility. The different axle positions and frame extension configurations were evaluated for the 45 degree inboard and 15 degree downward angle regulation update. The population of vehicles includes trucks built from the effective change of the regulation until our production was corrected. Production Dates : SEP 01, 2014 – SEP 22, 2022 VIN Range 1 : Begin : 1M2AX04C2FM024317 End : 1M2GR4NCXPM003551 ✔ Not sequential Description of Noncompliance : Description of the Noncompliance : Vehicles are non-compliant with the updates to FMVSS108, 6.4.3, turn signal visibility. FMVSS 1 : 108 – Lamps, reflective devices, and assoc. Equipment FMVSS 2 : NR Description of the Safety Risk : The turn signal visibility not meeting the 45 degree inboard and 15 degree downward angle increases the risk of an accident. Description of the Cause : Failure to incorporate the changes to FMVSS 108, 6.4.3 into some chassis extensions and hood variations. Identification of Any Warning that can Occur : There are no warnings associated with this issue. Involved Components : Part 573 Safety Recall Report 23V-600 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Component Name 1 : Headlamp Component Description : Headlamp assy Component Part Number : 25105806 Supplier Identification : Component Manufacturer Name : Mack Trucks Address : 7825 National Service Rd. Greensboro North Carolina 27409-9667 Country : United States Chronology : August 3, 2021, during a new project, questions were raised relative to some current hood designs and lighting compliance. September 20, 2021 and investigation was opened. October 14, 2022 findings of the engineering evaluation and testing was provided to Product Safety Working Group. October 19, 2022 Product Safety Working Group meets finds that this is a potential non-compliance and recommends that this be raised to the Product Safety Committee and that a request of a petition for inconsequential to safety be filed. October 27, 2022 Product Safety Committee meets and makes the decision that a petition for in-consequential noncompliance will be filled. November 23, 2022 a petition was submitted relative to this issue. August 18, 2023 feedback regarding this petition is received by Mack. August 25, 2023 Product Safety Committee meets and decides to recall effected vehicle. August 25,2023, Noncompliance Information Report 573 Filed with NHTSA. There have been no claims or reports related to the existence of this noncompliance. Description of Remedy : Description of Remedy Program : Supplementary lighting for turn signals which makes the vehicle compliant to FMVSS 108, 6.4.3 will be added to the vehicles. Reimbursement for the recall will be covered by Manufacturers Reimbursement Plan on file with NHTSA. Part 573 Safety Recall Report 23V-600 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 How Remedy Component Differs from Recalled Component : The vehicles will comply with the latest version of FMVSS 108 FMVSS 108, 6.4.3. Identify How/When Recall Condition was Corrected in Production : Production in our manufacturing facilities was corrected effective September 22, 2022. Recall Schedule : Description of Recall Schedule : Dealer notices will begin on September 1, 2023 and owners notification will begin on or before October 17, 2023 Planned Dealer Notification Date : SEP 01, 2023 – SEP 01, 2023 Planned Owner Notification Date : OCT 17, 2023 – OCT 17, 2023 * NR – Not Reported

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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 Vehicles are non-compliant with the updates to FMVSS108, 6.4.3. The turn signal visibility does not meet the 45 degree inboard and 15 degree downward angle which increases the risk of an accident. There have been no claims or reports of accidents related to the existence of this noncompliance. Additional front lighting will be added to comply with to FMVSS108, 6.4.3, turn signal visibility. Model and Model Years Affected • Certain 2015 to 2023 Mack GU and GR model vehicles manufactured September 1, 2014 through September 22, 2022. Vehicle Quantities • 32,698 vehicles (27,418 US, 5,280 Canada) 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 September 1, 2023. • Owner notification letters will be released on or before October 17, 2023. • Repair Instruction will be released once they are available. Contact If you have questions or concerns about this recall, contact the Regulatory Affairs Department at vtna.regulatoryaffairs@volvo.com. Subject: Safety Recall SC0448, GU-GR Turn Signal Visibility Recall Number: SRA-M448 Date: September 1, 2023 Applicable Markets: ☒U.S. ☒Canada ☐ Export

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