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2009 chevy traverse burning oil

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Savage scotty

my girlfriend bought 2009 chevy traverse with 105k miles idles and runs smooth as silk but it burns thru 3-4 quartz oil in 2-3 months. No oil stains around engine or floor but needs oxygen sensor replaced. Is the oxygen sensors the cause or is this normal?

3 Answers
4

There's a lot of Traverse owners with the same complaint.

Some, which had engines replaced during a service repair at the dealer, had defective engines installed.

There was a Service Bulletin in 2016 about that. Here's the PDF link.

https://static.nhtsa.gov/odi/tsbs/2016/MC-10078773-7690.pdf

In the bulletin it explains how to identify one of those engines.

There was also another service bulletin regarding oil consumption in 2017

Here's the PDF link to that one.

https://static.nhtsa.gov/odi/tsbs/2017/MC-10137727-9999.pdf

The thing is, your car is 13 years old so even if it had one of those replacement engines installed it's not likely the dealer will be giving you a new engine. (you should try anyway).

So go back to the tailpipe and stick your finger in it. Is it oily?

If it is then you have to make a decision.

A car burning that much oil is going to keep destroying catalytic converters.

You already have an O2 sensor code which may be signaling that's happening already.

With the price of used cars so high right now, you may want to consider unloading that Traverse before the forecasted recession hits and you're stuck with it.

 

 

 

3

Your piston rings, and the engine are worn out.  You could try a new PCV valve to see if it helps.

3

my girlfriend bought 2009 chevy traverse with 105k miles

That was a bad move.  

Is the oxygen sensors the cause or is this normal?

Doc is right.  You could have a dry/wet compression test done to see which cylinder it is and to confirm 100% a worn engine, but I can just about guarantee it if it’s burning oil.

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