# Service bulletin PI1540

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: 10126379
- Published by NHTSA: 2017\-12\-22
- Manufacturer's number: PI1540
- Manufacturer's date: 2015\-10\-19
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE

## NHTSA's summary

This preliminary informational bulletin provides diagnostic and repair information to correct a customer concern in which certain vehicles equipped with Gen 7 and OnStar, a recent over\-the\-air service update may have caused the OnStar system to become inoperative.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10126379-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10126379-0001.pdf)

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

## Components

Electrical system, Software

## Vehicles listed

- 2007 to 2011 BUICK LACROSSE
- 2007 to 2011 BUICK LUCERNE
- 2007 BUICK TERRAZA
- 2008 BUICK TERRAZA
- 2007 to 2011 CADILLAC DTS
- 2009 to 2011 CHEVROLET AVEO
- 2007 to 2011 CHEVROLET COLORADO
- 2007 to 2011 CHEVROLET IMPALA
- 2007 to 2011 CHEVROLET MALIBU
- 2007 to 2009 CHEVROLET TRAILBLAZER
- 2007 to 2009 CHEVROLET UPLANDER
- 2007 to 2011 GMC CANYON
- 2007 to 2010 HUMMER H2
- 2007 to 2010 HUMMER H3
- 2007 to 2010 PONTIAC G6
- 2007 to 2008 PONTIAC GRAND PRIX
- 2007 to 2009 PONTIAC MONTANA
- 2009 SAAB 9\-3
- 2009 to 2010 SAAB 9\-5
- 2007 to 2010 SATURN AURA
- 2007 SATURN RELAY
- 2008 SATURN RELAY

## Other bulletins for the same vehicles and component

- [PIP5146](/bulletins/10253405.md), 2024-04-22, Service bulletin: SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE; ELECTRICAL SYSTEM:SOFTWARE. Chatter Or Bind Feel On Turns.
- [20\-NA\-132](/bulletins/10252774.md), 2024-04-05, Service bulletin: ELECTRICAL SYSTEM; ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; EQUIPMENT. This warranty administration bulletin provides policy information on the requirements for 12V battery testing and warranty replacements.
- [PIC5687C](/bulletins/10246982.md), 2023-12-11, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Checking Smartphone Bluetooth Software Update Status
- [PIC5677A](/bulletins/10246981.md), 2023-12-11, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Timeshift Function Inoperative.
- [130089004H](/bulletins/10246623.md), 2023-12-11, Service bulletin: VISIBILITY:WINDSHIELD; UNKNOWN OR OTHER; ELECTRICAL SYSTEM:SOFTWARE; EXTERIOR LIGHTING:LIGHTING CONTROL MODULE; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; VEHICLE SPEED CONTROL:THROTTLE:THROTTLE POSITION SENSOR \(TPS\). Car and Truck Fix it Right the First Time Issues
- [130089003](/bulletins/10246614.md), 2023-12-11, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE. Vehicle Software Enhancements
- [PIP5632G](/bulletins/10230683.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
- [PIP4902Q](/bulletins/10230682.md), 2023-01-30, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL. This Preliminary Information communication provides information to the technician that General Motors Technical Assistance Center may ask for Global Diagnostic System 2 Session Log. Technician will need use Global Diagnostic System 2 to send the session logs to General Motors Technical Assistance Center for further assistance on the vehicle in question.
- [19\-NA\-262](/bulletins/10217078.md), 2022-08-03, Service bulletin: ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT. This technical bulletin provides repair information to correct a customer concern of Clock Shows Dashes and Cannot be Set After Battery Disconnect.
- [PI1152](/bulletins/10191011.md), 2021-04-28, Service bulletin: EQUIPMENT:APPLIANCE:AIR CONDITIONER; ELECTRICAL SYSTEM:SOFTWARE. HVAC Stuck in Defrost Mode, DTCs B0248, B0268 or B0408 Set Condition/Concern Some customers may comment that the HVAC system is stuck in the defrost mode. When checking the vehicle for DTCs, the HVAC control module may report B0248, B0268 or B0408 set as current. Once the DTC\(s\) are cleared, the air delivery mode can be changed. This condition may be due to an actuator over\-traveling or intermittently binding, causing the DTC\(s\) to set.

JSON: [/v1/bulletins/10126379](/v1/bulletins/10126379)

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