# Service bulletin KC\-391

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: 10207549
- Published by NHTSA: 2022\-02\-04
- Manufacturer's number: KC\-391
- Manufacturer's date: 2022\-01\-19
- NHTSA component: EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

## NHTSA's summary

Noise On The AM Radio Band; Thumping, Ticking, Fluttering Sound On AM Radio Band \- Model Year 2018 And Newer

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10207549-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10207549-9999.pdf)

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

## Components

Equipment and accessories

## Vehicles listed

- 2018 to 2022 MACK ANTHEM \(AN\)
- 2018 MACK CHU
- 2018 MACK CXU
- 2018 to 2022 MACK GRANITE \(GR\)
- 2018 to 2022 MACK GRANITE \(GU\)
- 2018 MACK GU
- 2018 to 2022 MACK LR
- 2020 MACK LR ELECTRIC
- 2020 to 2022 MACK MD
- 2018 MACK MRU
- 2018 to 2022 MACK PINNACLE \(CHU\)
- 2018 to 2022 MACK PINNACLE \(CXU\)
- 2018 to 2022 MACK PINNACLE \(PI/PN\)
- 2018 to 2019 MACK TD
- 2019 to 2021 MACK TE
- 2018 to 2019 MACK TERRAPRO \(LEU/MRU\)
- 2018 to 2022 MACK TERRAPRO \(MRU\)
- 2018 MACK TERRAPRO \(TE\)
- 2022 MACK TERRAPRO \(TE\)
- 2018 MACK TITAN \(TD\)

## Other bulletins for the same vehicles and component

- [CBR\-2315 202309](/bulletins/10243456.md), 2023-10-03, Service bulletin: EQUIPMENT. CBR: Mack Chassis \- Medium Duty \- Front Bumper License Plate Mounting Holes
- [KC\-2094 Rev 3](/bulletins/10238834.md), 2023-07-06, Service bulletin: EQUIPMENT:ELECTRICAL:INFOTAINMENT; ELECTRICAL SYSTEM. Infotainment System \- Volume Drop During A Phone Call, Phone Connected Via Bluetooth
- [SLM23\-005](/bulletins/10237374.md), 2023-06-06, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. Service Literature Published and Released in May, 2023
- [M\-170\-003](/bulletins/10235490.md), 2023-05-03, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. TSB: Vibration Diagnostics
- [M\-170\-001](/bulletins/10235489.md), 2023-05-03, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. TSB: Stock Vehicle Storage and Maintenance
- [M\-170\-002](/bulletins/10235486.md), 2023-05-03, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. TSB: New Vehicle Safety Certification Requirements for Vehicles, U.S. and Canada
- [M\-371\-004](/bulletins/10228626.md), 2023-01-03, Service bulletin: EQUIPMENT:ELECTRICAL; VISIBILITY/WIPER. TBS\- Jumper Harness,Wiper Motor,Replacement
- [STB22\-004M](/bulletins/10227209.md), 2022-12-06, Service bulletin: POWER TRAIN; EQUIPMENT. Mack Essential Tool Shipment
- [SLM22\-011](/bulletins/10227208.md), 2022-12-06, Service bulletin: EQUIPMENT. Service Literature Published and Released in November, 2022
- [S7641](/bulletins/10217007.md), 2022-08-02, Service bulletin: EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ELECTRICAL SYSTEM; FORWARD COLLISION AVOIDANCE. Bendix Wingman Fusion, Front Radar Fulfillment

JSON: [/v1/bulletins/10207549](/v1/bulletins/10207549)

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