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TOPIC : GMC

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Trans Relieving Itself?

This bulletin applies to 2010-2013 GMC Terrain trucks that exhibit an automatic transmission fluid leak. The technician may find fluid leaking from the torque converter housing and the torque converter seal. 

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Wet Chevy Switch

This bulletin applies to 2013 Chevy Equinox and GMC Terrain vehicles, built before 9/6/2012. Customers may comment on any one of the following conditions:

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Don’t Let the Code Fool You

This bulletin applies to 2007-2012 GMC Acadia vehicles. A “Service Stability” message may appear on the driver’s information center as a result of DTC C0561 set in the electronic brake control module (EBCM). The EBCM receives messages from the other modules over GMLAN which are needed to perform ABS, VSES and/or TCS functions.

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GM Ajar Message

This bulletin applies to 2013 Chevy Equinox and GMC Terrain vehicles built before 9-6-2012. The customer may experience an intermittent theft deterrent alarm, horn or hood ajar message.

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Check the Nuts First

Some owners of 2011 GMC Acadia vehicles may complain about a pop or snap type noise from the front suspension when going over bumps.

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GM Connections

This bulletin applies to a number of GM vehicles equipped with a 6T30/40/45 automatic transmission, including 2010-2012 Buick LaCrosse, 2011-2012 Buick Regal, 2012 Buick Verano, 2011-2012 Chevy Cruze, 2008-2012 Chevy Malibu, 2010-2012 Chevy Equinox, 2010-2012 GMC Terrain, 2008-2010 Pontiac G8, 2008-2010 Saturn Aura and 2012 Chevy Sonic.

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Avoid Air in Power Steering

This bulletin applies to 2008-2013 Buick Enclave, 2009-2013 Chevy Traverse, 2007-2013 GMC Acadia and 2007-2010 Saturn Outlook vehicles that require replacement of a power steering cooler. This bulletin outlines the procedure to prevent introducing a large amount of air into the system during service.

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Air Leak Doesn’t Mean Trouble

Input housing and shaft assemblies from transmissions have been incorrectly considered defective when air bubbles are observed coming from between the input shaft and the housing during an air check.

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Cranky Truck

This bulletin applies to 2012 GMC Sierra 4WD trucks. You may experience a vehicle that has a P0633 set in the ECM. Also, you will not be able to clear the DTC. Code P0633 will set as an indicator that the ECM is in learn mode and not as a fault indicator.

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Not a Cool Chevy

This bulletin applies to 2012-2013 Chevy Equinox and Impala vehicles as well as GMC Terrain models, equipped with a V6 engine only. Some customers may comment on an erratic or insufficient cooling when the A/C compressor is turned on. The compressor may not have been torqued properly at the time of assembly, causing a load on the compressor shaft.

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