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Service bulletin KC-206

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 id10206238
Published by NHTSA2022-01-08
Manufacturer's numberKC-206
Manufacturer's date2021-12-08
NHTSA componentVEHICLE SPEED CONTROL

NHTSA's summary

Vehicle Speed Factor (K-Factor) Programming - Speed Factor Value Incorrect When Calculated In Premium Tech Tool (PTT); Speedometer Reading Incorrectly Following A Change To Vehicle Speed Factor - US17+OBD16 And Newer Emissions, Common Model Year 2018

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

Throttle and cruise control

Vehicles listed
MACK ANTHEM (AN)2018 (the catalog's model; the bulletin names a series or trim of it)
MACK CHU2018
MACK CXU2018
MACK GRANITE (GR)2018 (the catalog's model; the bulletin names a series or trim of it)
MACK GRANITE (GU)2018 (the catalog's model; the bulletin names a series or trim of it)
MACK GU2018
MACK LR2018
MACK MRU2018
MACK PINNACLE (CHU)2018 (the catalog's model; the bulletin names a series or trim of it)
MACK PINNACLE (CXU)2018 (the catalog's model; the bulletin names a series or trim of it)
MACK PINNACLE (PI/PN)2018 (the catalog's model; the bulletin names a series or trim of it)
MACK TD2018
MACK TERRAPRO (LEU/MRU)2018 (the catalog's model; the bulletin names a series or trim of it)
MACK TERRAPRO (MRU)2018 (the catalog's model; the bulletin names a series or trim of it)
MACK TERRAPRO (TE)2018 (the catalog's model; the bulletin names a series or trim of it)
MACK TITAN (TD)2018

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 820-9 2026012026-02-03. Service bulletin. CBR - Mack Chassis - Engine Brake Only Works With The Brake Pedal, No Function During Cruise. US07 And Newer Emissions, Model Year 2008 And Newer.
CBR-2383 2024062024-07-03. Service bulletin. CBR - Accelerator Pedal: Inspection Instructions
KC-21432022-07-05. Service bulletin. (Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP).
KC-6862022-06-07. Service bulletin. (Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP)
K014356092019-07-01. Service bulletin. Adaptive Cruise Control ECU Fault In The Driver Information Display (DID) At Start Up; "Missing Communication From Adaptive Cruise Control ECU" Message In Cluster (MID 140 PSID 211 FMI 9) - Model Year 2018 And Newer
K934821412018-10-15. Service bulletin. Vehicle Overspeed Warning Comes Active At A Lower Speed Than Expected; Vehicle Overspeed Warning In Driver Information Display (DID) - Model Year 2018 And Newer With New Style Instrument Cluster
K129024142018-05-29. Service bulletin. Engine Speed Does Not Ramp Up From Body Builder Module Request; Requests Sent Via Data Link / Body Link Connector, Not By Switch Or Hardwired Circuit - Generation 2 (INT-GEN2) And Newer (Commonly Model Year 2018)