Lighting and HVAC Display May Lock Up – 2021 Spartan Gladiator & 2020 MetroStar Emergency Vehicles

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Spartan Motors USA, Inc. Hi-Tech Emergency Vehicle Service, Inc. 444 Greger St. Oakdale, Ca. 95361 209-847-3042 April 22, 2022 IMPORTANT SAFETY RECALL – 22V173 This notice applies to the vehicle identification number below. VIN# xxxxxxxxxxxxxxxx Dear Valued Customer, This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Hi-Tech Emergency Vehicle Service, Inc. has decided that a defect which relates to motor vehicle safety exists in a model year 2020-2021 Gladiator and MetroStar model emergency response chassis cabs, equipped with Weldon V-Mux Vista IV Flat Panel Equipment Recall 20E078. Please note: The Vehicle Identification Number that may be affected by this recall is located at the top of this letter. What is the defect? V-MUX Products manufactured from April 24 – Oct. 12, 2020 are more susceptible to low voltage spikesthat are beyond the advertised voltage specifications for the product. Product within the date range mayexperience ‘lock up’ condition where the LCD display or the entire unit may be nonfunctional until thepower is reset. The potential for the condition and the functions connected to the display varies due tovariation in electrical installation but may include back up camera, emergency warning lights, or patientcare devices depending on the application. Operator of vehicle may not be able to read the LCD screen and may not be able to use buttons or both unless they reset the power. If the LCD display appears blank, emergency personnel may not have immediate access to the functions and controls operated by the LCD screen which could delay emergency operations. No warnings may precede the occurrence. Low voltage spikes beyond the specified voltage range for the product typically cause the product to restart. In some cases, the product is not restarting successfully. Component obsolescence required a design update and the product in the date range while meeting advertised specifications, is more susceptible to negative voltage spikes than previous version of the same product. Vehicle design and installation wiring practices impact the negative voltage spike so there is expected variation between vehicle manufacturers and different applications from the same manufacturer. The affected item is the Weldon V-Mux IV Flat Panel Equipment Recall 20E078. Spartan Motors USA, Inc. Corrective Action: Replace or apply retrofit remedy as a factory recall. In coordination with Spartan Motors, Hi-Tech EVS will provide a new Vista display and compensate the owner for installing the new components provided free of charge. Labor Time: Estimated time for the remedy is 1 hours to replace each display. Some vehicles have two to three displays What You Should Do: Call Hi-Tech EVS at 800-225-0182 to locate a qualified service center near you. Steps will be taken to ensure the recall is performed at the nearest service center. Leased Vehicles: The lessor must notify the lessee by first class mail within ten (10) days from receipt of their owner notification letter from the manufacturer; both for the initial notification and all subsequent notifications. Reimbursement: If you had this 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. For more information contact Spartan at 1-800-543-5008. Reply Card: Please fill out the enclosed prepaid postcard and mail it to us if you have changed your address, sold, or traded the vehicle. If the authorized service center has failed or is unable to remedy the defect without charge and within a reasonable time, contact Spartan at 1-800-543-5008. You may also submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue SE, Washington, D.C. 20590 or call the Auto Safety Hotline at 1-888-327-4236 (TTY: 1-800-424-9153); or go to http://www.safercar.gov if you feel the manufacturer has failed or is unable to remedy the defect without charge We regret any inconvenience this service may cause you. Your safety and continued satisfaction with the quality and performance of your chassis is of the utmost concern to us. Sincerely, Hi-Tech Emergency Vehicle Service, Inc.

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Spartan Motors USA, Inc. Hi-Tech Emergency Vehicle Service, Inc. 444 Greger St. Oakdale, Ca. 95361 209-847-3042 July 21, 2022 IMPORTANT SAFETY RECALL – 22V173 This notice applies to the vehicle identification number below. VIN# xxxxxxxxxxxxxxxx Dear Valued Customer, This notice is sent to you in accordance with the National Traffic and Motor Vehicle Safety Act. Hi-Tech Emergency Vehicle Service, Inc. has decided that a defect which relates to motor vehicle safety exists in a model year 2020-2021 Gladiator and MetroStar model emergency response chassis cabs, equipped with Weldon V-Mux Vista IV Flat Panel Equipment Recall 20E078. Please note: The Vehicle Identification Number that may be affected by this recall is located at the top of this letter. What is the defect? V-MUX Products manufactured from April 24 – Oct. 12, 2020 are more susceptible to low voltage spikes that are beyond the advertised voltage specifications for the product. Product within the date range may experience ‘lock up’ condition where the LCD display or the entire unit may be nonfunctional until the power is reset. The potential for the condition and the functions connected to the display varies due to variation in electrical installation but may include back up camera, emergency warning lights, or patient care devices depending on the application. Operator of vehicle may not be able to read the LCD screen and may not be able to use buttons or both unless they reset the power. If the LCD display appears blank, emergency personnel may not have immediate access to the functions and controls operated by the LCD screen. If the LCD freezes or becomes non-functional, emergency efforts can be delayed, increasing the risk of injury. No warnings may precede the occurrence. Low voltage spikes beyond the specified voltage range for the product typically cause the product to restart. In some cases, the product is not restarting successfully. Component obsolescence required a design update and the product in the date range while meeting advertised specifications, is more susceptible to negative voltage spikes than previous version of the same product. Vehicle design and installation wiring practices impact the negative voltage spike so there is expected variation between vehicle manufacturers and different applications from the same manufacturer. The affected item is the Weldon V-Mux IV Flat Panel Equipment Recall 20E078. Spartan Motors USA, Inc. Corrective Action: Replace or apply retrofit remedy as a factory recall. In coordination with Spartan Motors, Hi-Tech EVS will provide a new Vista display and compensate the owner for installing the new components provided free of charge. Labor Time: Estimated time for the remedy is 1 hours to replace each display. Some vehicles have two to three displays What You Should Do: Call Hi-Tech EVS at 800-225-0182 to locate a qualified service center near you. Steps will be taken to ensure the recall is performed at the nearest service center. Leased Vehicles: The lessor must notify the lessee by first class mail within ten (10) days from receipt of their owner notification letter from the manufacturer; both for the initial notification and all subsequent notifications. Reimbursement: If you had this 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. For more information contact Spartan at 1-800-543-5008. Reply Card: Please fill out the enclosed prepaid postcard and mail it to us if you have changed your address, sold, or traded the vehicle. If the authorized service center has failed or is unable to remedy the defect without charge and within a reasonable time, contact Spartan at 1-800-543-5008. You may also submit a complaint to the Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue SE, Washington, D.C. 20590 or call the Auto Safety Hotline at 1-888-327-4236 (TTY: 1-800-424-9153); or go to http://www.safercar.gov if you feel the manufacturer has failed or is unable to remedy the defect without charge We regret any inconvenience this service may cause you. Your safety and continued satisfaction with the quality and performance of your chassis is of the utmost concern to us. Sincerely, Hi-Tech Emergency Vehicle Service, Inc.

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-173 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Hi-Tech E.V.S. Submission Date : MAR 28, 2022 NHTSA Recall No. : 22V-173 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Hi-Tech E.V.S. Address : 444 Greger St. Oakdale CA 95361 Company phone : 1-209-847-3042 Population : Number of potentially involved : 3 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2021 Spartan Gladiator and Metrostar Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : 4-DOOR Power Train : DIESEL Descriptive Information : On 12/22/20, we were notified of a recall by Spartan Fire Chassis which is the company that supplies us with the truck chassis that we build our fire truck bodies on. They referenced the original recall report that was filed by Weldon Division of Akron Brass regarding their Weldon V-Mux Vista Display. At the time we received the communication, we were short on staff due to COVID and the person that normally handles these issues was no longer here and consequently it was overlooked at the time. I have recently been assigned to handle this issue and am now filing the report. Per the information given us by Spartan, they identified (3) chassis that we purchased from them with the affected equipment. The particular units affected and part of this report are as follows: One (1) Spartan 2021 Gladiator unit and two (2) Spartan 2020 Metrostar units. Production Dates : JAN 01, 2020 – OCT 29, 2021 VIN Range 1 : Begin : 4S7CT2D93LC088486 End : 4S7CT2D93LC088486 ✔ Not sequential VIN Range 2 : Begin : 4S9CT2D97LC560146 End : 4S9CT2D97LC560146 Not sequential VIN Range 3 : Begin : 4S9AU2E94MC560156 End : 4S9AU2E94MC560156 Not sequential Part 573 Safety Recall Report 22V-173 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Defect : Description of the Defect : PRODUCTS IN THE DATE RANGE ARE MORE SUSCEPTIBLETO LOW VOLTAGE SPIKES THAT ARE BEYOND THE ADVERTISED VOLTAGE SPECIFICATIONS FOR THE PRODUCT. PRODUCT MAY EXPERIENCE “LOCK UP” CONDITION WHERE THE LCD DISPLAY OR THE ENTIRE UNIT MAY BE NONFUNCTIONAL UNTIL THE POWER RESETS. THE POTENTIAL FOR THE CONDITION AND THE FUNCTIONS CONNECTED TO THE DISPLAY VARIES DUE TO VARIATION IN ELECTRICAL INSTALLATION BUT MAY INCLUDE BACK UP CAMERA, EMERGENCY WARNING LIGHTS, OR PATIENT CARE DEVICES DEPENDING ON THE APPLICATION. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Operator of vehicle may not be able to read the LCD screen and may not be able to use buttons or both unless they reset the power. If the LCD display appears blank, emergency personnel may not have immediate access to the functions and controls operated by the LCD screen which could delay emergency operations. Description of the Cause : Low voltage spikes beyond the specified voltage range for the product typically cause the product to restart. In some cases the product is not restarting successfully. Component obsolescence required a design update and the product in the date range while meeting advertised specifications, is more susceptible to negative voltage spikes than previous version of the same product. Vehicle design and installation wiring practices impact the negative voltage spike so there is expected variation between vehicle manufacturers and different applications from the same manufacturer. Identification of Any Warning that can Occur : No warnings may precede the occurrence. Involved Components : Component Name 1 : Weldon V-Mux Vista IV Interface Component Description : Electronic control panel Component Part Number : NR Supplier Identification : Component Manufacturer Name : Spartan Motors Part 573 Safety Recall Report 22V-173 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Address : 1541 Reynolds Rd Charlotte Michigan 48813 Country : United States Chronology : On 12/22/20, we were notified of recall #20-E078 by Spartan Motors which is the company that supplies us with the truck chassis that we build our fire truck bodies on. They referenced the original recall report that was filed by Weldon Division of Akron Brass regarding their Weldon V-Mux Vista Display. At the time we received the original communication, we were short on staff due to COVID and the person that normally handles these issues was no longer here and consequently it was overlooked at the time. As of 3/14/22 a new person was assigned to handle this issue and we have now identified (3) units that were delivered with the defective product. On March 22, 2022, Hitech decided to conduct a recall to address those units in the field. Description of Remedy : Description of Remedy Program : Replace or apply retrofit remedy as a factory recall. Hitech will verify those units affected by the recall, notify the end users, and work with Spartan and the owner to schedule and complete the installation of a new Vista Display free of charge to the owner. How Remedy Component Differs from Recalled Component : A revision decal on the display identifies the remedy component from the recalled component. Units outside of the recall scope use a different design configuration and are not susceptible to voltage drops outside of the advertised operation range. Identify How/When Recall Condition was Corrected in Production : N/A Recall Schedule : Description of Recall Schedule : A recall letter detailing the defective issue/product along with the appropriate remedy instructions, will be generated and mailed out by first class mail on 4/22/22. A sample letter will be sent to NHTSA for approval at least 5 days prior to the 4/22/22 mail date. Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : APR 22, 2022 – APR 22, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-173 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Hi-Tech E.V.S. Submission Date : APR 18, 2022 NHTSA Recall No. : 22V-173 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Hi-Tech E.V.S. Address : 444 Greger St. Oakdale CA 95361 Company phone : 1-209-847-3042 Population : Number of potentially involved : 3 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2021 Spartan Gladiator and Metrostar Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : 4-DOOR Power Train : DIESEL Descriptive Information : On 12/22/20, we were notified of a recall by Spartan Fire Chassis which is the company that supplies us with the truck chassis that we build our fire truck bodies on. They referenced the original recall report that was filed by Weldon Division of Akron Brass regarding their Weldon V-Mux Vista Display. At the time we received the communication, we were short on staff due to COVID and the person that normally handles these issues was no longer here and consequently it was overlooked at the time. I have recently been assigned to handle this issue and am now filing the report. Per the information given us by Spartan, they identified (3) chassis that we purchased from them with the affected equipment. The particular units affected and part of this report are as follows: One (1) Spartan 2021 Gladiator unit and two (2) Spartan 2020 Metrostar units. Production Dates : JAN 01, 2020 – OCT 29, 2021 VIN Range 1 : Begin : 4S7CT2D93LC088486 End : 4S7CT2D93LC088486 ✔ Not sequential VIN Range 2 : Begin : 4S9CT2D97LC560146 End : 4S9CT2D97LC560146 Not sequential VIN Range 3 : Begin : 4S9AU2E94MC560156 End : 4S9AU2E94MC560156 Not sequential Part 573 Safety Recall Report 22V-173 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Defect : Description of the Defect : PRODUCTS IN THE DATE RANGE ARE MORE SUSCEPTIBLETO LOW VOLTAGE SPIKES THAT ARE BEYOND THE ADVERTISED VOLTAGE SPECIFICATIONS FOR THE PRODUCT. PRODUCT MAY EXPERIENCE “LOCK UP” CONDITION WHERE THE LCD DISPLAY OR THE ENTIRE UNIT MAY BE NONFUNCTIONAL UNTIL THE POWER RESETS. THE POTENTIAL FOR THE CONDITION AND THE FUNCTIONS CONNECTED TO THE DISPLAY VARIES DUE TO VARIATION IN ELECTRICAL INSTALLATION BUT MAY INCLUDE BACK UP CAMERA, EMERGENCY WARNING LIGHTS, OR PATIENT CARE DEVICES DEPENDING ON THE APPLICATION. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Operator of vehicle may not be able to read the LCD screen and may not be able to use buttons or both unless they reset the power. If the LCD display appears blank, emergency personnel may not have immediate access to the functions and controls operated by the LCD screen which could delay emergency operations. Description of the Cause : Low voltage spikes beyond the specified voltage range for the product typically cause the product to restart. In some cases the product is not restarting successfully. Component obsolescence required a design update and the product in the date range while meeting advertised specifications, is more susceptible to negative voltage spikes than previous version of the same product. Vehicle design and installation wiring practices impact the negative voltage spike so there is expected variation between vehicle manufacturers and different applications from the same manufacturer. Identification of Any Warning that can Occur : No warnings may precede the occurrence. Involved Components : Component Name 1 : Weldon V-Mux Vista IV Interface Component Description : Electronic control panel Component Part Number : NR Supplier Identification : Component Manufacturer Name : Spartan Motors Part 573 Safety Recall Report 22V-173 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Address : 1541 Reynolds Rd Charlotte Michigan 48813 Country : United States Chronology : On 12/22/20, we were notified of recall #20-E078 by Spartan Motors which is the company that supplies us with the truck chassis that we build our fire truck bodies on. They referenced the original recall report that was filed by Weldon Division of Akron Brass regarding their Weldon V-Mux Vista Display. At the time we received the original communication, we were short on staff due to COVID and the person that normally handles these issues was no longer here and consequently it was overlooked at the time. As of 3/14/22 a new person was assigned to handle this issue and we have now identified (3) units that were delivered with the defective product. On March 22, 2022, Hitech decided to conduct a recall to address those units in the field. Description of Remedy : Description of Remedy Program : Replace or apply retrofit remedy as a factory recall. Hitech will verify those units affected by the recall, notify the end users, and work with Spartan and the owner to schedule and complete the installation of a new Vista Display free of charge to the owner. How Remedy Component Differs from Recalled Component : A revision decal on the display identifies the remedy component from the recalled component. Units outside of the recall scope use a different design configuration and are not susceptible to voltage drops outside of the advertised operation range. Identify How/When Recall Condition was Corrected in Production : N/A Recall Schedule : Description of Recall Schedule : A recall letter detailing the defective issue/product along with the appropriate remedy instructions, will be generated and mailed out by first class mail on 4/22/22. There are no dealers involved with this recall, therefore only affected Owners will be notified. A sample letter will be sent to NHTSA for approval at least 5 days prior to the 4/22/22 mail date. Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : APR 22, 2022 – APR 22, 2022 Part 573 Safety Recall Report 22V-173 Page 4 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-173 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Hi-Tech E.V.S. Submission Date : MAR 22, 2022 NHTSA Recall No. : 22V-173 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Hi-Tech E.V.S. Address : 444 Greger St. Oakdale CA 95361 Company phone : 847-3042 Population : Number of potentially involved : 3 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2019-2021 Spartan Gladiator and Metrostar Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : 4-DOOR Power Train : DIESEL Descriptive Information : On 12/22/20, we were notified of a recall by Spartan Fire Chassis which is the company that supplies us with the truck chassis that we build our fire truck bodies on. They referenced the original recall report that was filed by Weldon Division of Akron Brass regarding their Weldon V-Mux Vista Display. At the time we received the communication, we were short on staff due to COVID and the person that normally handles these issues was no longer here and consequently it was overlooked at the time. I have recently been assigned to handle this issue and am now filing the report. Per the information given us by Spartan, they identified (3) chassis that we purchased from them with the affected equipment. The particular units affected and part of this report are listed below. Production Dates : JAN 01, 2019 – OCT 29, 2021 VIN Range 1 : Begin : 4S7CT2D93LC End : 4S7CT2D93LC ✔ Not sequential VIN Range 2 : Begin : 4S9CT2D97LC End : 4S9CT2D97LC Not sequential VIN Range 3 : Begin : 4S9AU2E94MC End : 4S9AU2E94MC Not sequential Part 573 Safety Recall Report 22V-173 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Defect : Description of the Defect : PRODUCTS IN THE DATE RANGE ARE MORE SUSCEPTIBLETO LOW VOLTAGE SPIKES THAT ARE BEYOND THE ADVERTISED VOLTAGE SPECIFICATIONS FOR THE PRODUCT. PRODUCT MAY EXPERIENCE “LOCK UP” CONDITION WHERE THE LCD DISPLAY OR THE ENTIRE UNIT MAY BE NONFUNCTIONAL UNTIL THE POWER RESETS. THE POTENTIAL FOR THE CONDITION AND THE FUNCTIONS CONNECTED TO THE DISPLAY VARIES DUE TO VARIATION IN ELECTRICAL INSTALLATION BUT MAY INCLUDE BACK UP CAMERA, EMERGENCY WARNING LIGHTS, OR PATIENT CARE DEVICES DEPENDING ON THE APPLICATION. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Operator of vehicle may not be able to read the LCD screen and may not be able to use buttons or both unless they reset the power. If the LCD display appears blank, emergency personnel may not have immediate access to the functions and controls operated by the LCD screen which could delay emergency operations. Description of the Cause : Low voltage spikes beyond the specified voltage range for the product typically cause the product to restart. In some cases the product is not restarting successfully. Component obsolescence required a design update and the product in the date range while meeting advertised specifications, is more susceptible to negative voltage spikes than previous version of the same product. Vehicle design and installation wiring practices impact the negative voltage spike so there is expected variation between vehicle manufacturers and different applications from the same manufacturer. Identification of Any Warning that can Occur : No warnings may precede the occurrence. Involved Components : Component Name 1 : Weldon V-Mux Vista IV Interface Component Description : Electronic control panel Component Part Number : NR Supplier Identification : Component Manufacturer Name : Spartan Motors Part 573 Safety Recall Report 22V-173 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Address : 1541 Reynolds Rd Charlotte Michigan 48813 Country : United States Chronology : On 12/22/20, we were notified of recall #20-E078 by Spartan Motors which is the company that supplies us with the truck chassis that we build our fire truck bodies on. They referenced the original recall report that was filed by Weldon Division of Akron Brass regarding their Weldon V-Mux Vista Display. At the time we received the original communication, we were short on staff due to COVID and the person that normally handles these issues was no longer here and consequently it was overlooked at the time. As of 3/14/22 a new person was assigned to handle this issue and we have now identified (3) units that were delivered with the defective product. On March 22, 2022, Hitech decided to conduct a recall to address those units in the field. Description of Remedy : Description of Remedy Program : Replace or apply retrofit remedy as a factory recall. Hitech will verify those units affected by the recall, notify the end users, and work with Spartan and the owner to schedule and complete the installation of a new Vista Display free of charge to the owner. How Remedy Component Differs from Recalled Component : A revision decal on the display identifies the remedy component from the recalled component. Units outside of the recall scope use a different design configuration and are not susceptible to voltage drops outside of the advertised operation range. Identify How/When Recall Condition was Corrected in Production : N/A Recall Schedule : Description of Recall Schedule : A recall letter detailing the defective issue/product along with the appropriate remedy instructions, will be generated and mailed out by first class mail on 4/22/22. A sample letter will be sent to NHTSA for approval at least 5 days prior to the 4/22/22 mail date. Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : APR 22, 2022 – APR 22, 2022 * NR – Not Reported

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 22V-173 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Hi-Tech E.V.S. Submission Date : MAY 25, 2022 NHTSA Recall No. : 22V-173 Manufacturer Recall No. : NR Manufacturer Information : Manufacturer Name : Hi-Tech E.V.S. Address : 444 Greger St. Oakdale CA 95361 Company phone : 1-209-847-3042 Population : Number of potentially involved : 3 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2020-2021 Spartan Gladiator and Metrostar Vehicle Type : BUSES, MEDIUM & HEAVY VEHICLES Body Style : 4-DOOR Power Train : DIESEL Descriptive Information : On 12/22/20, we were notified of a recall by Spartan Fire Chassis which is the company that supplies us with the truck chassis that we build our fire truck bodies on. They referenced the original recall report that was filed by Weldon Division of Akron Brass regarding their Weldon V-Mux Vista Display. At the time we received the communication, we were short on staff due to COVID and the person that normally handles these issues was no longer here and consequently it was overlooked at the time. I have recently been assigned to handle this issue and am now filing the report. Per the information given us by Spartan, they identified (3) chassis that we purchased from them with the affected equipment. The particular units affected and part of this report are as follows: One (1) Spartan 2021 Gladiator unit and two (2) Spartan 2020 Metrostar units. Production Dates : JAN 01, 2020 – OCT 29, 2021 VIN Range 1 : Begin : 4S7CT2D93LC088486 End : 4S7CT2D93LC088486 ✔ Not sequential VIN Range 2 : Begin : 4S9CT2D97LC560146 End : 4S9CT2D97LC560146 Not sequential VIN Range 3 : Begin : 4S9AU2E94MC560156 End : 4S9AU2E94MC560156 Not sequential Part 573 Safety Recall Report 22V-173 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Defect : Description of the Defect : PRODUCTS IN THE DATE RANGE ARE MORE SUSCEPTIBLETO LOW VOLTAGE SPIKES THAT ARE BEYOND THE ADVERTISED VOLTAGE SPECIFICATIONS FOR THE PRODUCT. PRODUCT MAY EXPERIENCE “LOCK UP” CONDITION WHERE THE LCD DISPLAY OR THE ENTIRE UNIT MAY BE NONFUNCTIONAL UNTIL THE POWER RESETS. THE POTENTIAL FOR THE CONDITION AND THE FUNCTIONS CONNECTED TO THE DISPLAY VARIES DUE TO VARIATION IN ELECTRICAL INSTALLATION BUT MAY INCLUDE BACK UP CAMERA, EMERGENCY WARNING LIGHTS, OR PATIENT CARE DEVICES DEPENDING ON THE APPLICATION. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : Operator of vehicle may not be able to read the LCD screen and may not be able to use buttons or both unless they reset the power. If the LCD display appears blank, emergency personnel may not have immediate access to the functions and controls operated by the LCD screen which could delay emergency operations and create an increased risk of either a crash, injury, or fire. Description of the Cause : Low voltage spikes beyond the specified voltage range for the product typically cause the product to restart. In some cases the product is not restarting successfully. Component obsolescence required a design update and the product in the date range while meeting advertised specifications, is more susceptible to negative voltage spikes than previous version of the same product. Vehicle design and installation wiring practices impact the negative voltage spike so there is expected variation between vehicle manufacturers and different applications from the same manufacturer. Identification of Any Warning that can Occur : No warnings may precede the occurrence. Involved Components : Component Name 1 : Weldon V-Mux Vista IV Interface Component Description : Electronic control panel Component Part Number : NR Supplier Identification : Component Manufacturer Part 573 Safety Recall Report 22V-173 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Name : Spartan Motors Address : 1541 Reynolds Rd Charlotte Michigan 48813 Country : United States Chronology : On 12/22/20, we were notified of recall #20-E078 by Spartan Motors which is the company that supplies us with the truck chassis that we build our fire truck bodies on. They referenced the original recall report that was filed by Weldon Division of Akron Brass regarding their Weldon V-Mux Vista Display. At the time we received the original communication, we were short on staff due to COVID and the person that normally handles these issues was no longer here and consequently it was overlooked at the time. As of 3/14/22 a new person was assigned to handle this issue and we have now identified (3) units that were delivered with the defective product. On March 22, 2022, Hitech decided to conduct a recall to address those units in the field. Description of Remedy : Description of Remedy Program : Replace or apply retrofit remedy as a factory recall. Hitech will verify those units affected by the recall, notify the end users, and work with Spartan and the owner to schedule and complete the installation of a new Vista Display free of charge to the owner. If you had this repair performed before you received this letter, you may be eligible to receive reimbursement for the cost of obtaining a prenotification remedy of the problem associated with this recall. For more information contact Spartan Chassis at 1.800.543.5008. How Remedy Component Differs from Recalled Component : A revision decal on the display identifies the remedy component from the recalled component. Units outside of the recall scope use a different design configuration and are not susceptible to voltage drops outside of the advertised operation range. Identify How/When Recall Condition was Corrected in Production : N/A Recall Schedule : Description of Recall Schedule : A recall letter detailing the defective issue/product along with the appropriate remedy instructions, will be generated and mailed out by first class mail on 4/22/22. There are no dealers involved with this recall, therefore only affected Owners will be notified. A sample letter will be sent to NHTSA for approval at least 5 days prior to Part 573 Safety Recall Report 22V-173 Page 4 The information contained in this report was submitted pursuant to 49 CFR §573 the 4/22/22 mail date. Planned Dealer Notification Date : NR – NR Planned Owner Notification Date : APR 22, 2022 – APR 22, 2022 * NR – Not Reported

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