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Service bulletin CBR 2016-18 202511

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)
TypeService bulletin
NHTSA id11026023
Published by NHTSA2025-12-03
Manufacturer's numberCBR 2016-18 202511
Manufacturer's date2025-11-19
NHTSA componentSUSPENSION; UNKNOWN OR OTHER

NHTSA's summary

CBR - Frame or Cab Lean.

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

Suspension

Vehicles listed
MACK PIONEER PR (4)2025, 2026 (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.

Other bulletins for the same vehicles and component
CBR 2584-4 2026052026-06-02. Service bulletin. Electronically controlled suspension (ECS) calibration procedure.
CBR 2548-1 2026012026-02-03. Service bulletin. CBR - Shock Interference With ā€œZā€ Springs.
CBR 2447 0720252025-08-04. Service bulletin. CBR - Electronically Controlled Suspension (ECS) calibration using Premium Tech Tool (PTT) is required to correct discrepancies between the cluster load indicator and actual scale values, ensuring proper functionality of liftable axles and preventing unintended axle behavior.
CBR-2016 2024122025-01-02. Service bulletin. Frame lean can be caused by several seemingly isolated possibilities. The two most common are suspension and frame assembly issues.