Subject: | Information on Close-Coupled Converter and Engine Replacement | |
Models: | 2004-2014 GM Cars and Trucks | |
with Close-Coupled Catalytic Converters |
This bulletin has been revised to add the 2009-2014 model years. Please discard CorporateBulletin Number 06-06-01-010A.
Certain 2004-2014 General Motors products may be equipped with a new style of catalyticconverter, technically known as the close-coupled catalytic converter, providing quickcatalyst warm-up, resulting in lower tail pipe emissions earlier in the vehicle operatingcycle.
If an engine breakdown or non-function were to occur (such as broken intake/exhaustvalve or piston), debris may be deposited in the converter through engine exhaustports. If the engine is non-functioning due to a severe overheat event, damage tothe ceramic “brick” internal to the catalytic converter may occur. This may resultin ceramic debris being drawn into the engine through the cylinder head exhaust ports.
If a replacement engine is installed in either of these instances, the replacementengine may fail due to the debris being introduced into the combustion chambers whenstarted.
When replacing an engine for a breakdown or non-function, an inspection of the catalyticconverters and ALL transferred components (such as exhaust/intake manifolds) shouldbe performed. Any debris found should be removed. In cases of engine failure due tosevere overheat, dealers should also inspect each catalytic converter for signs ofmelting or cracking of the ceramic “brick.” If damage is observed, the converter shouldbe replaced.
GM bulletins are intended for use by professional technicians,NOT a "do-it-yourselfer". They are written to inform thesetechnicians of conditions that may occur on some vehicles, or toprovide information that could assist in the proper service of avehicle. Properly trained technicians have the equipment,tools, safety instructions, and know-how to do a job properly andsafely. If a condition is described, DO NOT assume that thebulletin applies to your vehicle, or that your vehicle will havethat condition. See your GM dealer for information on whetheryour vehicle may benefit from the information. | WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION |
Front View Camera Module Programming and Setup
Note:DO NOT program a control module unless directed to by a service procedure or a servicebulletin. If the control module is not properly configured with the correct calibrationsoftware, the control module will not control all of the vehicle features properly.Ensure the programming tool is equipped ...