TSB: MACK ANTHEM, ANTHEM (AN), CHU, CXU, GRANITE (GR), GRANITE (GU), GU, MACK, PINNACLE (CHU), PINNACLE (CXU), PINNACLE (PI), TD (2015–2022)

Bulletin KC-365 — January 17, 2022

Bulletin Details

Bulletin IDKC-365
ManufacturerMACK
ModelsANTHEM, ANTHEM (AN), CHU, CXU, GRANITE (GR), GRANITE (GU), GU, MACK, PINNACLE (CHU), PINNACLE (CXU), PINNACLE (PI), TD
Model Years2015–2022
Date IssuedJanuary 17, 2022
Date Added to NHTSAApril 6, 2022
ComponentSUSPENSION
Vehicles Affected175 combinations

What is a TSB?

A Technical Service Bulletin is a document issued by the vehicle manufacturer to inform dealership technicians about a known issue and the recommended repair procedure. TSBs are not mandatory recalls — they serve as repair guidance for common problems.

If your vehicle has this issue, bring this bulletin ID to your dealer. If under warranty, the repair should be covered at no cost.

Summary

Mack Chassis - FSB 728-005, Leveling Valve, Leak Test, Air Leaks From The Leveling Valve After The Vehicle Is Parked (Shut Off)

Affected Vehicles

MakeModelYearComponent
MACK ANTHEM (AN) 2022 020000 SUSPENSION
MACK ANTHEM (AN) 2022 350000 EQUIPMENT
MACK ANTHEM (AN) 2022 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GU) 2022 020000 SUSPENSION
MACK GRANITE (GU) 2022 350000 EQUIPMENT
MACK GRANITE (GU) 2022 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CHU) 2022 020000 SUSPENSION
MACK PINNACLE (CHU) 2022 350000 EQUIPMENT
MACK PINNACLE (CHU) 2022 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CXU) 2022 020000 SUSPENSION
MACK PINNACLE (CXU) 2022 350000 EQUIPMENT
MACK PINNACLE (CXU) 2022 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (PI) 2022 020000 SUSPENSION
MACK PINNACLE (PI) 2022 350000 EQUIPMENT
MACK PINNACLE (PI) 2022 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK ANTHEM (AN) 2021 020000 SUSPENSION
MACK ANTHEM (AN) 2021 350000 EQUIPMENT
MACK ANTHEM (AN) 2021 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GR) 2021 020000 SUSPENSION
MACK GRANITE (GR) 2021 350000 EQUIPMENT
MACK GRANITE (GR) 2021 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GU) 2021 020000 SUSPENSION
MACK GRANITE (GU) 2021 350000 EQUIPMENT
MACK GRANITE (GU) 2021 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CHU) 2021 020000 SUSPENSION
MACK PINNACLE (CHU) 2021 350000 EQUIPMENT
MACK PINNACLE (CHU) 2021 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CXU) 2021 020000 SUSPENSION
MACK PINNACLE (CXU) 2021 350000 EQUIPMENT
MACK PINNACLE (CXU) 2021 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (PI) 2021 020000 SUSPENSION
MACK PINNACLE (PI) 2021 350000 EQUIPMENT
MACK PINNACLE (PI) 2021 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK ANTHEM (AN) 2020 020000 SUSPENSION
MACK ANTHEM (AN) 2020 350000 EQUIPMENT
MACK ANTHEM (AN) 2020 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GR) 2020 020000 SUSPENSION
MACK GRANITE (GR) 2020 350000 EQUIPMENT
MACK GRANITE (GR) 2020 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GU) 2020 020000 SUSPENSION
MACK GRANITE (GU) 2020 350000 EQUIPMENT
MACK GRANITE (GU) 2020 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CHU) 2020 020000 SUSPENSION
MACK PINNACLE (CHU) 2020 350000 EQUIPMENT
MACK PINNACLE (CHU) 2020 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CXU) 2020 020000 SUSPENSION
MACK PINNACLE (CXU) 2020 350000 EQUIPMENT
MACK PINNACLE (CXU) 2020 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (PI) 2020 020000 SUSPENSION
MACK PINNACLE (PI) 2020 350000 EQUIPMENT
MACK PINNACLE (PI) 2020 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK ANTHEM (AN) 2019 020000 SUSPENSION
MACK ANTHEM (AN) 2019 350000 EQUIPMENT
MACK ANTHEM (AN) 2019 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GR) 2019 020000 SUSPENSION
MACK GRANITE (GR) 2019 350000 EQUIPMENT
MACK GRANITE (GR) 2019 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GU) 2019 020000 SUSPENSION
MACK GRANITE (GU) 2019 350000 EQUIPMENT
MACK GRANITE (GU) 2019 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CHU) 2019 020000 SUSPENSION
MACK PINNACLE (CHU) 2019 350000 EQUIPMENT
MACK PINNACLE (CHU) 2019 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CXU) 2019 020000 SUSPENSION
MACK PINNACLE (CXU) 2019 350000 EQUIPMENT
MACK PINNACLE (CXU) 2019 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (PI) 2019 020000 SUSPENSION
MACK PINNACLE (PI) 2019 350000 EQUIPMENT
MACK PINNACLE (PI) 2019 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK TD 2019 020000 SUSPENSION
MACK TD 2019 350000 EQUIPMENT
MACK TD 2019 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK ANTHEM (AN) 2018 020000 SUSPENSION
MACK ANTHEM (AN) 2018 350000 EQUIPMENT
MACK ANTHEM (AN) 2018 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK CHU 2018 020000 SUSPENSION
MACK CHU 2018 350000 EQUIPMENT
MACK CHU 2018 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK CXU 2018 020000 SUSPENSION
MACK CXU 2018 350000 EQUIPMENT
MACK CXU 2018 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GR) 2018 020000 SUSPENSION
MACK GRANITE (GR) 2018 350000 EQUIPMENT
MACK GRANITE (GR) 2018 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GU) 2018 020000 SUSPENSION
MACK GRANITE (GU) 2018 350000 EQUIPMENT
MACK GRANITE (GU) 2018 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GU 2018 020000 SUSPENSION
MACK GU 2018 350000 EQUIPMENT
MACK GU 2018 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CHU) 2018 020000 SUSPENSION
MACK PINNACLE (CHU) 2018 350000 EQUIPMENT
MACK PINNACLE (CHU) 2018 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CXU) 2018 020000 SUSPENSION
MACK PINNACLE (CXU) 2018 350000 EQUIPMENT
MACK PINNACLE (CXU) 2018 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (PI) 2018 020000 SUSPENSION
MACK PINNACLE (PI) 2018 350000 EQUIPMENT
MACK PINNACLE (PI) 2018 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK TD 2018 020000 SUSPENSION
MACK TD 2018 350000 EQUIPMENT
MACK TD 2018 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK ANTHEM (AN) 2017 020000 SUSPENSION
MACK ANTHEM (AN) 2017 350000 EQUIPMENT
MACK ANTHEM (AN) 2017 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK CHU 2017 020000 SUSPENSION
MACK CHU 2017 350000 EQUIPMENT
MACK CHU 2017 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK CXU 2017 020000 SUSPENSION
MACK CXU 2017 350000 EQUIPMENT
MACK CXU 2017 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GR) 2017 020000 SUSPENSION
MACK GRANITE (GR) 2017 350000 EQUIPMENT
MACK GRANITE (GR) 2017 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GU) 2017 020000 SUSPENSION
MACK GRANITE (GU) 2017 350000 EQUIPMENT
MACK GRANITE (GU) 2017 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GU 2017 020000 SUSPENSION
MACK GU 2017 350000 EQUIPMENT
MACK GU 2017 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CHU) 2017 020000 SUSPENSION
MACK PINNACLE (CHU) 2017 350000 EQUIPMENT
MACK PINNACLE (CHU) 2017 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CXU) 2017 020000 SUSPENSION
MACK PINNACLE (CXU) 2017 350000 EQUIPMENT
MACK PINNACLE (CXU) 2017 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK TD 2017 020000 SUSPENSION
MACK TD 2017 350000 EQUIPMENT
MACK TD 2017 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK ANTHEM 2016 020000 SUSPENSION
MACK ANTHEM 2016 350000 EQUIPMENT
MACK ANTHEM 2016 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK CHU 2016 020000 SUSPENSION
MACK CHU 2016 350000 EQUIPMENT
MACK CHU 2016 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK CXU 2016 020000 SUSPENSION
MACK CXU 2016 350000 EQUIPMENT
MACK CXU 2016 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GR) 2016 020000 SUSPENSION
MACK GRANITE (GR) 2016 350000 EQUIPMENT
MACK GRANITE (GR) 2016 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GU) 2016 020000 SUSPENSION
MACK GRANITE (GU) 2016 350000 EQUIPMENT
MACK GRANITE (GU) 2016 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GU 2016 020000 SUSPENSION
MACK GU 2016 350000 EQUIPMENT
MACK GU 2016 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CHU) 2016 020000 SUSPENSION
MACK PINNACLE (CHU) 2016 350000 EQUIPMENT
MACK PINNACLE (CHU) 2016 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CXU) 2016 020000 SUSPENSION
MACK PINNACLE (CXU) 2016 350000 EQUIPMENT
MACK PINNACLE (CXU) 2016 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK TD 2016 020000 SUSPENSION
MACK TD 2016 350000 EQUIPMENT
MACK TD 2016 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK CHU 2015 020000 SUSPENSION
MACK CHU 2015 350000 EQUIPMENT
MACK CHU 2015 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK CXU 2015 020000 SUSPENSION
MACK CXU 2015 350000 EQUIPMENT
MACK CXU 2015 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GRANITE (GU) 2015 020000 SUSPENSION
MACK GRANITE (GU) 2015 350000 EQUIPMENT
MACK GRANITE (GU) 2015 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK GU 2015 020000 SUSPENSION
MACK GU 2015 350000 EQUIPMENT
MACK GU 2015 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CHU) 2015 020000 SUSPENSION
MACK PINNACLE (CHU) 2015 350000 EQUIPMENT
MACK PINNACLE (CHU) 2015 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK PINNACLE (CXU) 2015 020000 SUSPENSION
MACK PINNACLE (CXU) 2015 350000 EQUIPMENT
MACK PINNACLE (CXU) 2015 354200 EQUIPMENT:MECHANICAL:INTEGRATED JACK/LEVELER/STABILIZER
MACK MACK 040000 SERVICE BRAKES, AIR

Related MACK Recalls

CampaignModelYearComponentSummary
ANTHEM AN (4) 2026 SERVICE BRAKES, AIR:ANTILOCK:CONTROL ... Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2026-...
ANTHEM AN (4) 2027 SERVICE BRAKES, AIR:ANTILOCK:CONTROL ... Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2026-...
PIONEER PR (4) 2025 SERVICE BRAKES, AIR:ANTILOCK:CONTROL ... Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2026-...
PIONEER PR (4) 2026 SERVICE BRAKES, AIR:ANTILOCK:CONTROL ... Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2026-...
PIONEER PR (4) 2027 SERVICE BRAKES, AIR:ANTILOCK:CONTROL ... Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2026-...

What Should You Do?

If your vehicle is affected by this TSB, contact your authorized MACK dealer. Bring this bulletin ID (KC-365) when you visit. If under warranty, the repair should be free. If your warranty has expired, ask about goodwill coverage — manufacturers sometimes cover TSB-related repairs beyond the warranty period.

Frequently Asked Questions

A recall is a mandatory safety fix — the manufacturer must repair every affected vehicle for free. A TSB is an advisory document that describes a known issue and the recommended fix, but repairs are not required. However, some TSBs eventually lead to recalls if the issue poses a safety risk. TSBs are generally issued for quality or performance problems, while recalls address safety defects.

If your vehicle is still under the manufacturer's warranty, TSB-related repairs are typically covered at no cost. If your warranty has expired, you can ask the dealer about goodwill or customer assistance programs. Many manufacturers will cover or partially cover repairs for well-known issues, especially if the TSB was issued recently or affects a large number of vehicles.

Check the make, model, and model year listed above against your vehicle. If they match, this bulletin likely applies. However, TSBs may only affect vehicles with specific production dates, VIN ranges, or configurations. Your dealer can confirm by entering your VIN into their service system, which will show all applicable TSBs and recalls.

This data comes from the National Highway Traffic Safety Administration (NHTSA). Manufacturers are required to submit copies of all communications (including TSBs) sent to their dealers to NHTSA. The agency makes this data publicly available as part of its vehicle safety monitoring program.