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Service bulletins for the 2027 Mack MD

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.

5 on file from NHTSA, as of 2026-10-19.

By type

By component

Bulletins, newest first
S5041 2026082026-09-02. Service campaign. ENGINE. Certain Mack Medium Duty vehicles may not have sufficient torque on the fan hub retaining hardware.
CBR 2573-1 2026042026-05-05. Service bulletin. POWER TRAIN. CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers.
CBR 2362-3 2026042026-05-04. Service bulletin. POWER TRAIN. CBR - Mack Carrier Nut Adhesive Change.
TSB M-432-002A 0320262026-04-02. Service bulletin. POWER TRAIN. TSB - Cable, Gear Selector, Replacement
CBR 2712-7 0320262026-04-02. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. CBR - No Start Condition After Over the Air Programing.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.