# Service bulletin 15663

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: 10089571
- Published by NHTSA: 2017\-01\-26
- Manufacturer's number: 15663
- Manufacturer's date: 2015\-11\-05
- NHTSA component: ELECTRICAL SYSTEM:WIRING

## NHTSA's summary

15663 \- SERVICE UPDATE. THIS BULLETIN PROVIDES A SERVICE PROCEDURE TO RELOCATE A WIRE CIRCUIT WITHIN THE ONSTAR CONNECTOR ON CERTAIN VEHICLES. THESE VEHICLES LACK A GROUND IN THE MICROPHONE RETURN PATH, WHICH RESULTS IN THE VOICE RECOGNITION BECOMING INOPERABLE WHEN THE VEHICLE IS IN RETAINED ACCESSORY \(RAP\) OR ACCESSORY POWER MODE. IN ADDITION, THE HANDS\-FREE VOICE QUALITY CAN BE DEGRADED. THE ONSTAR FUNCTIONS ARE NOT IMPACTED BY THIS CONDITION.

## The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

## Components

Electrical system, Wiring and fuses

## Vehicles listed

- 2016 BUICK ENCLAVE
- 2016 CHEVROLET TRAVERSE
- 2016 GMC ACADIA

## Other bulletins for the same vehicles and component

- [PIT5962](/bulletins/10230693.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:WIRING. This Preliminary information communicates a GM part number for reflective high temperature heat or insulating tape when repairing wiring harnesses.
- [100089005G](/bulletins/10159575.md), 2019-05-13, Service bulletin: ELECTRICAL SYSTEM:WIRING. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
- [100089005H](/bulletins/10154629.md), 2019-03-18, Service bulletin: ELECTRICAL SYSTEM:WIRING. This warranty admin bulletin explains to the technician additional information may be needed when submitting transactions when doing wiring repairs.
- [10\-00\-89\-005E](/bulletins/10137237.md), 2018-05-21, Service bulletin: ELECTRICAL SYSTEM:WIRING. This warranty administration bulletin adds the 2016 model year to a communication which provides dealership personnel revised wiring repair labor operations and required additional information.
- [10\-00\-89\-005F](/bulletins/10118545.md), 2017-10-05, Service bulletin: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ELECTRICAL SYSTEM:WIRING. This informational bulletin provides warranty policy information on revised wiring repair labor operations and required additional information.

JSON: [/v1/bulletins/10089571](/v1/bulletins/10089571)

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