2011 GMC TERRAIN SLE-FAILED CATALYTIC CONVERTER

tracy154

TSB: Bulletin No.: PIP5163D -Published date: 08/8/2018
4. Catalytic Converter failure- If a converter fails and the brick is broken, the dust can be drawn back into the engine. A block showing this type of failure, will have bores that look to be sand blasted. Back cylinders go first if caught early. Otherwise there will be no Crosshatch and the engine will need to be replaced.

TSB: File in Section: 06 - Engine Bulletin No.: 00-06-01-026H
Catalytic Converter Failures When catalytic converter failures occur and the inner brick becomes plugged and breaks apart, the catalytic converter material can be sucked back into the engine during valve overlap and transfer throughout the intake manifold and into the cylinder. Any such material transfer can cause heavy wear to piston rings and cylinder walls. Misfires and oil consumption are the byproducts of ingested catalytic converter material into the combustion chamber and cylinder bores

**ANYONE EXPERIENCE ENGINE FAILURE OR DAMAGE DUE TO FAULTY CATALYTIC CONVERTER?? 2011 GMC TERRAIN 2.4L ECOTECH

bkelley000

I could see a build up of back presser causing a loss of power but for anything to make it back into the engine from the exhaust while its running seems odd. When off roaders cross rivers the vehicle may have a snorkel on the intake but the exhaust gas is just released underwater .