TSB: MACK ANTHEM (AN), CH, CHN, CHU, CL, CT, CTP, CV, CX, CXN, CXP, CXU, DM, GRANITE (GR), GU, LE, LEU, LR, MRU, PINNACLE (PI), RB, RD, TD, TERRAPRO (TE) (2005–2020)

Bulletin K31822325 — December 18, 2019

Bulletin Details

Bulletin IDK31822325
ManufacturerMACK
ModelsANTHEM (AN), CH, CHN, CHU, CL, CT, CTP, CV, CX, CXN, CXP, CXU, DM, GRANITE (GR), GU, LE, LEU, LR, MRU, PINNACLE (PI), RB, RD, TD, TERRAPRO (TE)
Model Years2005–2020
Date IssuedDecember 18, 2019
Date Added to NHTSAJanuary 13, 2020
ComponentPOWER TRAIN
Vehicles Affected72 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 - Differential Carrier Models CRD 125 And CRD 150 - New Differential Axle Seal Installation Tool; New Tool Required For New Input And Output Seal Installation

Affected Vehicles

MakeModelYearComponent
MACK ANTHEM (AN) 2020 100000 POWER TRAIN
MACK ANTHEM (AN) 2020 350000 EQUIPMENT
MACK ANTHEM (AN) 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK GRANITE (GR) 2020 100000 POWER TRAIN
MACK GRANITE (GR) 2020 350000 EQUIPMENT
MACK GRANITE (GR) 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK LR 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK LR 2020 350000 EQUIPMENT
MACK LR 2020 100000 POWER TRAIN
MACK PINNACLE (PI) 2020 100000 POWER TRAIN
MACK PINNACLE (PI) 2020 350000 EQUIPMENT
MACK PINNACLE (PI) 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK TERRAPRO (TE) 2020 100000 POWER TRAIN
MACK TERRAPRO (TE) 2020 350000 EQUIPMENT
MACK TERRAPRO (TE) 2020 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK TD 2019 350000 EQUIPMENT
MACK TD 2019 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK TD 2019 100000 POWER TRAIN
MACK CHU 2018 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK CHU 2018 350000 EQUIPMENT
MACK CHU 2018 100000 POWER TRAIN
MACK CXU 2018 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK CXU 2018 350000 EQUIPMENT
MACK CXU 2018 100000 POWER TRAIN
MACK GU 2018 100000 POWER TRAIN
MACK GU 2018 350000 EQUIPMENT
MACK GU 2018 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK MRU 2018 350000 EQUIPMENT
MACK MRU 2018 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK MRU 2018 100000 POWER TRAIN
MACK LEU 2017 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK LEU 2017 350000 EQUIPMENT
MACK LEU 2017 100000 POWER TRAIN
MACK CHN 2008 350000 EQUIPMENT
MACK CHN 2008 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK CHN 2008 100000 POWER TRAIN
MACK CL 2008 100000 POWER TRAIN
MACK CL 2008 350000 EQUIPMENT
MACK CL 2008 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK CT 2008 100000 POWER TRAIN
MACK CT 2008 350000 EQUIPMENT
MACK CT 2008 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK CTP 2008 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK CTP 2008 350000 EQUIPMENT
MACK CTP 2008 100000 POWER TRAIN
MACK CV 2008 100000 POWER TRAIN
MACK CV 2008 350000 EQUIPMENT
MACK CV 2008 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK CXN 2008 100000 POWER TRAIN
MACK CXN 2008 350000 EQUIPMENT
MACK CXN 2008 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK CXP 2008 100000 POWER TRAIN
MACK CXP 2008 350000 EQUIPMENT
MACK CXP 2008 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK CH 2007 350000 EQUIPMENT
MACK CH 2007 100000 POWER TRAIN
MACK CH 2007 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK CX 2007 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK CX 2007 350000 EQUIPMENT
MACK CX 2007 100000 POWER TRAIN
MACK LE 2007 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK LE 2007 350000 EQUIPMENT
MACK LE 2007 100000 POWER TRAIN
MACK DM 2006 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK DM 2006 350000 EQUIPMENT
MACK DM 2006 100000 POWER TRAIN
MACK RB 2005 100000 POWER TRAIN
MACK RB 2005 350000 EQUIPMENT
MACK RB 2005 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK RD 2005 100000 POWER TRAIN
MACK RD 2005 356000 EQUIPMENT ADAPTIVE/MOBILITY
MACK RD 2005 350000 EQUIPMENT

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 (K31822325) 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.