# Service bulletin K31378153

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.

- Type: Service bulletin
- NHTSA id: 10142686
- Published by NHTSA: 2018\-07\-16
- Manufacturer's number: K31378153
- Manufacturer's date: 2018\-06\-14
- NHTSA component: POWER TRAIN:MANUAL TRANSMISSION; STEERING:GEAR BOX \(OTHER THAN RACK AND PINION\)

## NHTSA's summary

Mack Chassis \- Vehicles Equipped With An Automated Manual Transmission Model F \( AMT\-F, mDrive \), Premium Tech Tool \( PTT \) Gearbox Calibration Failure; Gearbox Calibration Operation Stops And Fails At 33% \- US17\+OBD16 \(GHG17\) And Newer Emissions, Common Model Years 2018 And Newer

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10142686-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10142686-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Steering, Transmission and driveline, Manual transmission, Steering gear

## Vehicles listed

- 2018 to 2019 MACK ANTHEM \(AN\)
- 2018 MACK CHU
- 2018 MACK CXU
- 2019 MACK GRANITE \(GU\)
- 2018 MACK GU
- 2019 MACK PINNACLE \(CHU\)
- 2019 MACK PINNACLE \(CXU\)

## Other bulletins for the same vehicles and component

- [K21075253](/bulletins/10145538.md), 2018-10-15, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION. Mack Chassis \- Automated Manual Transmission Model F \( AMT\-F, mDrive \) \- Short Transmission Replacement; Calibration And/Or Shifting Problems Following Replacement Of A Short Transmission \- US17\+OBD2016 And Newer Emissions, Model Year 2018 And Newer
- [K91121166](/bulletins/10145537.md), 2018-10-15, Service bulletin: ENGINE; POWER TRAIN:MANUAL TRANSMISSION. Mack Chassis \- Automated Manual Transmission Model F \(AMT\-F, mDrive\) \- Possible Infrequent Hiccup/Stumble During Steady Engine/Vehicle Speed; Diagnostic Trouble Code P1074\-92 Logging, Appears As Inactive \- Common Model Years 2018 And 2019
- [K61510658](/bulletins/10142708.md), 2018-07-16, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; STEERING:GEAR BOX \(OTHER THAN RACK AND PINION\); POWER TRAIN:MANUAL TRANSMISSION. Mack Chassis \- Equipped With An Automated Manual Transmission Model F \(AMT\-F, mDrive\) With Crawler Gears \- Setting The Maximum Gear That Can Be \(Temporarily\) Selected For Starting From Stop In Automatic And Manual Modes; New Parameters For Maximum Adjustable Gear In Automatic And Manual Modes; US17\+OBD16 And Newer Emissions, Commonly Model Year 2018 And Newer
- [K48661544](/bulletins/10129924.md), 2018-03-12, Service bulletin: POWER TRAIN:MANUAL TRANSMISSION; STEERING:GEAR BOX:SHAFT SECTOR. Chassis Equipped With An AMT\-F \(mDrive\) \- Idle Drive Function Activates When Vehicle Is Reversing/Backing Up At Low Speed; Information And Repair \- Build Date Beginning Of Production 2017 To February 2018

JSON: [/v1/bulletins/10142686](/v1/bulletins/10142686)

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