2011 Terrain SLE2 - 102,XXX miles
In May I began oil consumption tests at Jennings Chevy in Glenview. The first few checks they said were "within spec", they topped my oil level off and sent me on my way and to come back in 1000 miles. My Service Advisor recommended some more highway driving to reproduce the problem. Sure enough next check I was more than 1.5 quarts low in less than 1000 miles.
There were two special policies that were in place 12313B and 15285C which replaced the pistons/rings, timing chains and high pressure fuel pump. At this time I had the spark plugs done due to my concerns of them being fouled as well as them being original. This was done at no cost to me.
Fast forward to last week and I now have a CEL on the dash. My first thought is something related to the repairs so I go back to Jennings. The code ends up being P0420 (Catalyst System Efficiency Below Threshold (Bank 1)). They want $1280 to replace the cat. When asked if it was related to the oil consumption issues I was basically told there is no way to determine that is what caused it to fail and it will not be covered under warranty.
My questions to TCG
1) 102,XXX miles seems very premature for a cat failure. Is this normal? In my opinion it has to be from the oil consumption issue.
2) This seems to be very widespread. If any of you are techs or work for GM dealerships have you ever seen these being replaced under warranty or as part of the above special policies?
3) If an aftermarket cat a viable option? The direct fit part seems to be GM only and I'm concerned of longer term issues or not passing emissions if an OEM cat is not used
In May I began oil consumption tests at Jennings Chevy in Glenview. The first few checks they said were "within spec", they topped my oil level off and sent me on my way and to come back in 1000 miles. My Service Advisor recommended some more highway driving to reproduce the problem. Sure enough next check I was more than 1.5 quarts low in less than 1000 miles.
There were two special policies that were in place 12313B and 15285C which replaced the pistons/rings, timing chains and high pressure fuel pump. At this time I had the spark plugs done due to my concerns of them being fouled as well as them being original. This was done at no cost to me.
Fast forward to last week and I now have a CEL on the dash. My first thought is something related to the repairs so I go back to Jennings. The code ends up being P0420 (Catalyst System Efficiency Below Threshold (Bank 1)). They want $1280 to replace the cat. When asked if it was related to the oil consumption issues I was basically told there is no way to determine that is what caused it to fail and it will not be covered under warranty.
My questions to TCG
1) 102,XXX miles seems very premature for a cat failure. Is this normal? In my opinion it has to be from the oil consumption issue.
2) This seems to be very widespread. If any of you are techs or work for GM dealerships have you ever seen these being replaced under warranty or as part of the above special policies?
3) If an aftermarket cat a viable option? The direct fit part seems to be GM only and I'm concerned of longer term issues or not passing emissions if an OEM cat is not used