Chevrolet Equinox Service Manual: #06-06-01-010B: Information on Close-Coupled Converter and Engine Replacement - (Aug 19, 2013)

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.