2019 Sierra AT4 6.2 burning oil

[Rick Crockett]

It started burning oil, or at least showing it, the 2nd year that I owned it.  My oil light came on and it needed almost 2 quarts.  We have been monitoring it ever since.  But until October of this year, GM would not look at it unless it lost a quart of oil in 1,000 miles.  Mine was always 3/4 of a quart at 1,000 miles.  Just found out about an bulletin from October that said that they changed it to 1 quart in 2,000 miles, so I am running it by GM again.

 

Took it in the other day for a loud ticking noise and some regular missing at idle.  They came back and said lifters for the ticking.  And I think something about the crankshaft for the missing that I was feeling.  I have it at another dealer today for a 2nd opinion.  I am wondering if the oil burning issue contributed to the lifter and other problem?

 

Anyone have experience with this and any suggestions on how to deal with GM.  It started buring while under warranty, but it is out of warranty now.

 

Thanks

[calgator73]

13 minutes ago, Rick Crockett said:

It started burning oil, or at least showing it, the 2nd year that I owned it.  My oil light came on and it needed almost 2 quarts.  We have been monitoring it ever since.  But until October of this year, GM would not look at it unless it lost a quart of oil in 1,000 miles.  Mine was always 3/4 of a quart at 1,000 miles.  Just found out about an bulletin from October that said that they changed it to 1 quart in 2,000 miles, so I am running it by GM again.

 

Took it in the other day for a loud ticking noise and some regular missing at idle.  They came back and said lifters for the ticking.  And I think something about the crankshaft for the missing that I was feeling.  I have it at another dealer today for a 2nd opinion.  I am wondering if the oil burning issue contributed to the lifter and other problem?

 

Anyone have experience with this and any suggestions on how to deal with GM.  It started buring while under warranty, but it is out of warranty now.

 

Thanks

It sounds like you're not the first owner of the truck.  If you pull a Carfax you can determine the selling dealer and any other dealers involved if it was resold several times.  That will give you the ability to call each of them and get the maintenance history for the vehicle as well as any complaints by the customers.  Generally if you can prove the problems started under warranty then you have a case for general motors to resolve.  Another less ethical way of dealing with it might be to buy the GM extended warranty deal with the burning oil for a few months and then file a warranty claim.

[Rick Crockett]

I am the original owner

[Bikerjon]

How many miles on this truck? If you are out of warranty then you will have an uphill battle to get any warranty coverage. You obviously have more problems than just burning oil. The lifters and camshaft can also be a big deal. The camshaft and lifters can be damaged if the engine was run without oil, however these trucks with the 5.3 or the 6.2 are known for collapsed lifters damaging the cam and bent pushrods. I think you will be facing a huge repair bill or possibly an engine replacement. Very sorry to hear this.

[calgator73]

22 hours ago, Rick Crockett said:

I am the original owner

Sorry...misread your opening line regarding 2nd year of ownership.  If you have documentation with the dealer and the TSB changed to reflect a more stringent standard hopefully your dealer is able to work with them towards a good resolution or at least a cost-share.  How many miles?

[Rick Crockett]

82,000

[Bikerjon]

10 hours ago, Rick Crockett said:

82,000

Following. Keep us informed as to your outcome.

[Rick Crockett]

I just passed 1,500 miles since last oil change, so dropped off the truck at the dealer to get a oil level reading.