TSB: MACK ANTHEM, ANTHEM (AN) (2016–2022)

Bulletin KC-375 — January 18, 2022

Bulletin Details

Bulletin IDKC-375
ManufacturerMACK
ModelsANTHEM, ANTHEM (AN)
Model Years2016–2022
Date IssuedJanuary 18, 2022
Date Added to NHTSAFebruary 3, 2022
ComponentEXTERIOR LIGHTING
Vehicles Affected14 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 - Anthem (AN) Models - Headlight Diagnostics And Replacement; Instructions For Non-Functioning Headlight Or Turn Signal In Headlight Housing

Affected Vehicles

MakeModelYearComponent
MACK ANTHEM (AN) 2022 120000 EXTERIOR LIGHTING
MACK ANTHEM (AN) 2022 121000 EXTERIOR LIGHTING:HEADLIGHTS
MACK ANTHEM (AN) 2021 120000 EXTERIOR LIGHTING
MACK ANTHEM (AN) 2021 121000 EXTERIOR LIGHTING:HEADLIGHTS
MACK ANTHEM (AN) 2020 120000 EXTERIOR LIGHTING
MACK ANTHEM (AN) 2020 121000 EXTERIOR LIGHTING:HEADLIGHTS
MACK ANTHEM (AN) 2019 120000 EXTERIOR LIGHTING
MACK ANTHEM (AN) 2019 121000 EXTERIOR LIGHTING:HEADLIGHTS
MACK ANTHEM (AN) 2018 120000 EXTERIOR LIGHTING
MACK ANTHEM (AN) 2018 121000 EXTERIOR LIGHTING:HEADLIGHTS
MACK ANTHEM (AN) 2017 120000 EXTERIOR LIGHTING
MACK ANTHEM (AN) 2017 121000 EXTERIOR LIGHTING:HEADLIGHTS
MACK ANTHEM 2016 120000 EXTERIOR LIGHTING
MACK ANTHEM 2016 121000 EXTERIOR LIGHTING:HEADLIGHTS

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-375) 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.