# Service bulletin PIC6449B

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: 10237687
- Published by NHTSA: 2023\-06\-13
- Manufacturer's number: PIC6449B
- Manufacturer's date: 2023\-05\-25
- NHTSA component: VEHICLE SPEED CONTROL

## NHTSA's summary

This Preliminary information communicates to the dealers on the process to be able to order a replacement High Voltage battery pack for a vehicle that has a High Voltage battery battery concern and is not on the current open recall list. This document will add in advising the dealers to contact TAC with needed information so TAC can review the data to verify that the vehicle need a High Voltage battery and then TAC will release the High voltage battery so the dealer can repair the vehicle for the customer. Also the Administrative Details have the direction for the consultants to be able to follow and handle the case information as it comes in.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10237687-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10237687-9999.pdf)

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

## Components

Throttle and cruise control

## Vehicles listed

- 2022 CHEVROLET BOLT EUV
- 2017 to 2022 CHEVROLET BOLT EV
- 2022 GMC HUMMER EV PICKUP

## Other bulletins for the same vehicles and component

- [10\-08\-110\-001L](/bulletins/11014171.md), 2025-02-11, Service bulletin: STRUCTURE:BODY; VEHICLE SPEED CONTROL. This service bulletin provides information on proper use of floor mats.
- [PIT5854B](/bulletins/11007017.md), 2024-09-04, Service bulletin: VEHICLE SPEED CONTROL. This Preliminary information communicates information on vehicle speed being limited due to aftermarket lower kit being installed on the vehicle.
- [PIT6127](/bulletins/10251691.md), 2024-03-18, Service bulletin: ELECTRICAL SYSTEM; VEHICLE SPEED CONTROL:CRUISE CONTROL. This Preliminary information communicates a vehicle may come to the dealer with Super Cruise inoperative. On inspection the tech will find code B126B. Tech is given direction on how to update the Map module to restore function. Dealer is also given directions to give to customer to ensure they continue to receive updates.
- [24\-NA\-030](/bulletins/10250514.md), 2024-02-23, Service bulletin: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; VEHICLE SPEED CONTROL:CRUISE CONTROL; ELECTRICAL SYSTEM. This informational bulletin provides information on when the customer engage SuperCruise, their vehicle will immediately veer to the left and center itself on the left\-hand lane line. During normal driving and/or if normal/adaptive cruise is used a pull may not be noticed.
- [PIT5903A](/bulletins/10226391.md), 2022-11-21, Service bulletin: VEHICLE SPEED CONTROL. This Preliminary information communicates to General Motors dealers some helpful steps to diagnose the speed limit showing dashes concern.
- [PIT5569A](/bulletins/10163665.md), 2019-08-12, Service bulletin: WHEELS; VEHICLE SPEED CONTROL. This Preliminary information communicates direction and examples when diagnosing multiple DTCs, one of which includes U\*\*\*\* Byte 71 DTC.

JSON: [/v1/bulletins/10237687](/v1/bulletins/10237687)

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