Wow! Thanks for posting about that. In 3 years on this forum, I've never seen that come up before as an issue, but obviously it is! I wonder what caused it to crack? I drive my car very hard all the time, WOT every day and in 183K miles never had an issue like this. Do you know the part number?View attachment 204665 WARNING: If you get symptoms I had with smoking, reduced power, sputtering, DPF full warning:
This seems to be the culprit to all the problems with DPF and Engine reduced power warning lights. Intercooler for turbo is made of plastic. It broke and also took out the Throttle body. Dealer says there is a TSB from GM on this as a known problem and they are making a modification to the part. Not sure how long it will be to get the replacement part from GM, still waiting. Not a help to me since I am way out of warranty based on mileage.