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Over-the-air update GDC26-001 202604

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeOver-the-air update
NHTSA id11032095
Published by NHTSA2026-05-05
Manufacturer's numberGDC26-001 202604
Manufacturer's date2026-04-25
NHTSA componentPOWER TRAIN

NHTSA's summary

GDC - Transmission Oil Level Sensor

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
MACK ANTHEM AN (4)2026, 2027 (the catalog's model; the bulletin names a series or trim of it)
MACK GRANITE GR (4)2026, 2027 (the catalog's model; the bulletin names a series or trim of it)
MACK PIONEER PR (4)2025, 2026, 2027 (the catalog's model; the bulletin names a series or trim of it)

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
24V4240002024-06-09. POWER TRAIN:AXLE ASSEMBLY; STEERING:LINKAGES:TIE ROD ASSEMBLY

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
TSB M-913-001 2026092026-10-02. Service bulletin. Parker engine-mounted hydraulic pump service bulletin.
CBR 2573-1 2026042026-05-05. Service bulletin. CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.
CBR 2362-3 2026042026-05-04. Service bulletin. CBR - Mack Carrier Nut Adhesive Change.
CBR 2218-6 0320262026-04-02. Service bulletin. CBR - Parker F3 Hydraulic Pump Troubleshooting.
S4579 0920252025-10-01. Service campaign. Mack Trucks has identified that certain truck models may have been assembled with incorrect center bearing mounting hardware and could have been torqued incorrectly. Improper torque can increase the risk of hardware failure. To address this issue, please follow the instructions in this document to replace and correctly torque the center bearing and center bearing mounting bracket hardware.
S4574 0720252025-08-04. Service campaign. SC - Mack Trucks has identified that certain truck models may have been assembled with incorrectly torqued interaxle prop shaft U-joint hardware.
CBR 2482 0720252025-08-04. Service bulletin. CBR - Purpose of this CBR is to address Pop up message for PTO Malfunction when there is not PTO Installed.
CBR 2474-1 2025062025-07-01. Service bulletin. CBR - This bulletin provides guidance for identifying and addressing oil intrusion related to the Countershaft Brake (CSB) in AMT-G transmissions.
CBR 2464-1 2025052025-06-02. Service bulletin. Mack Chassis - Rear Axle Overheat
S4088 2024092024-10-04. Service campaign. Service Campaign: Interaxle Driveline Torque