2017 Lacrosse service parking brake light

[stryker6040]

Hello I have the service parking brake light and warning at start up, anyone know how to trouble shoot this, the actuator motors on the rear calipers appear to work, when you apply manual power with test probe you can make them extend and retract. Button on dash dies nothing and trying to enter service mode like you would to do rear brakes doesnt appear to do anything either

I have an advance autel diag to and can get to the module but none of the command tests from there work and or get a failure message.

Is there a dedicated module for this system, no stored codes

Looking for some help to get teenage son back on road with his limited budget.

Thanks!

 

[jeffbazell1]

Normal Characteristic - Instrument Panel Red Brake Light Intermittently Comes On​

1. Vehicle
2. Brakes and Traction Control
3. Parking Brake System
4. Technical Service Bulletins
5. By Symptom
6. Normal Characteristic - Instrument Panel Red Brake Light Intermittently Comes On

Normal Characteristic - Instrument Panel Red Brake Light Intermittently Comes On

#PI1410B: Normal Characteristic - Instrument Panel Red Brake Light Intermittently Comes On - (May 19, 2017)

[td]Subject: [/td][td]Normal Characteristic - Instrument Panel Red Brake Light Intermittently Comes On[/td]
[td]

[/td] [td]Models: [/td][td]2013-2018 All GM Passenger Cars and Trucks[/td] [td]Equipped with Electronic Park Brake (EPB) and RPO UGN[/td] [td]Attention: [/td][td]This PI also applies to any of the above models that may be Export from North America vehicles.[/td]

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This PI has been revised to add all vehicles equipped with EPB and RPO UGN. Please discard PI1410A.

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Condition/Concern
Some customers may comment that the red park brake light on the instrument panel intermittently comes on.
This may be due to the vehicle automatically applying the electronic parking brake (EPB) when the vehicle is not moving.
Recommendation/Instructions
This is normal and is done periodically (every 50 key cycles) to check the correct operation of the EPB system.
Customer Information
Please communicate to the customer this condition is a normal operating characteristic of their vehicle. It will not impact the designed performance or reliability of the vehicle. Please share this information with the customer, including a copy of this message.

[td]

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.​

[/td]​

[td]

​

[/td]
[td]

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION​

[/td]​

© 2017 General Motors. All rights reserved.

 

[G-1388]

Normal Characteristic - Instrument Panel Red Brake Light Intermittently Comes On​

1. Vehicle
2. Brakes and Traction Control
3. Parking Brake System
4. Technical Service Bulletins
5. By Symptom
6. Normal Characteristic - Instrument Panel Red Brake Light Intermittently Comes On

Normal Characteristic - Instrument Panel Red Brake Light Intermittently Comes On

#PI1410B: Normal Characteristic - Instrument Panel Red Brake Light Intermittently Comes On - (May 19, 2017)

[td]Subject: [/td][td]Normal Characteristic - Instrument Panel Red Brake Light Intermittently Comes On[/td]
[td]

[/td] [td]Models: [/td][td]2013-2018 All GM Passenger Cars and Trucks[/td] [td]Equipped with Electronic Park Brake (EPB) and RPO UGN[/td] [td]Attention: [/td][td]This PI also applies to any of the above models that may be Export from North America vehicles.[/td]

---

This PI has been revised to add all vehicles equipped with EPB and RPO UGN. Please discard PI1410A.

---

Condition/Concern
Some customers may comment that the red park brake light on the instrument panel intermittently comes on.
This may be due to the vehicle automatically applying the electronic parking brake (EPB) when the vehicle is not moving.
Recommendation/Instructions
This is normal and is done periodically (every 50 key cycles) to check the correct operation of the EPB system.
Customer Information
Please communicate to the customer this condition is a normal operating characteristic of their vehicle. It will not impact the designed performance or reliability of the vehicle. Please share this information with the customer, including a copy of this message.

[td]

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.​

[/td]​

[td]

​

[/td]
[td]

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION​

[/td]​

© 2017 General Motors. All rights reserved.

Thanks for the reply but I dont think this is the issue, the light on the dash is yellow/orange and is the same light that would come on and flash while in brake service mode, except in this case we are not in service mode and it is lit solid and we get a warning message at start up saying service electronic parking brake.