I bought an 01 Z06 with 42k miles in great shape yesterday. I stopped by a chevy dealer and had them run a Vehicle master inquiry on it to see what work has been performed on it and i see on 1/21/02 when the car had 11295 miles on it it says service J1307 was performed and describes it as Piston, Rod and / Or rings - One Cyl - Both Banks - Replace

I assume this is the infamous ring job for the oil consumption issues 01's had, if so i am actually happy but why would it say only one cylinder both banks

Anyone have insight into this, the dealership was clueless


Also there is one from 8/7/2006 that says V1409 - 04006 - Install Wire Kit Only - U.S. Manuals - WTF is that??

 

Why wouldn't you have asked the tech when you were there at the service garage?

 

I would think yes your car has been reringed and I have no idea about the wire kit

 

Of course I asked the tech and he was clueless. It is a FL car and I am in NC. I just can't figure out why it says one cylinder each bank, didn't they have to re-ring all cylinders

 

I think the wire kit is the the fix for the Column lock recall.

 

Typically the time is given for one cylinder with an time allowance for each additional cylinder repaired.

 

The wire kit is for the column lock.

 

Well it thrills me that the car was likely re-ringed as this is my 2nd 2001 Z06 and my first guzzled oil like a drunkard

The oil life monitir is at 53% on this car and it was down to 1/3 of the way up to between the add mark and the full mark on the dipstick so i am assuming it is still using a little oil. Is some (53% is likely to mean it has about 3k since the last oil change) consumption normal. I can live with a quart per 4-5k miles.

Let me know if that sounds about right.

Thanks,
Robert

 

It doesn't mean anything. Oil could have been added 5 minutes before you looked at the car.

 

2 banks rerung the motor--Citi and wells fargo-

 

Good point, but maybe not.

To the OP, change your oil, let it sit overnight on a flat surface, and check the level before start-up in the morning. Check the level the same way each 1000 miles and see if the car is consuming a lot of oil.

 

The item J1037 is the warranty code for labor operations needed for piston, rod, and /or rings --replacement both banks.

This is from document #894549
TSB 01-06-01-023A
http://www.rjsmith.com/gm-894549.html



Also item #04006 is the electronic column lock system.

 

very good info here. i was under the impression all the rings were changed which would of course mean a new hone. this of course is not the case.

i also thought this was specific to 2001 ls6 only, the paper shows 01-02 on the corvette

 

why does changing only one ring per side fix the issue??

 

Oil rings on one side of each piston.

 

Corvette V1409 = ELECTRONIC COLUMN LOCK SYSTEM repair.

Ranger

 

Swapping out the OEM number 2 compression ring ( 9 lbs tension & less aggressive Napier scraper face) to a higher 13 lbs tension & more aggressive Napier scraper faced ring and oil expander alone does not ensure oil consumption issue is solved for warranty LS1 and LS6 engines.

This ring swap "should" lower oil consumption to a more acceptable level. What is an acceptable level of oil consumption? That number varies as each GM dealer makes a review and determination, but Assistant Chief Engineer John Juriga states that one quart consumption in 2000 miles. But adds that altering to a more conservative driving style would contribute to reducing oil consumption.
That driving style would refer to lower engine rpms at no load or low MAP, in other words shift into a higher gear , lowering rpm when cruising around town.


The start of model year (M/Y) 2002 production implemented the new revised ring pack to the LS6 and then a couple weeks later it went into the LS1.

Please realize that the revised ring(s) , whether replaced under warranty or installed in production for the GEN3 engines were just a band-aid fix. The actual problems were in the GEN 3 5300 utility block i.e. the siamesed cylinder bores have a slot at the top 20 mm between bores as an additional coolant passage . This has caused inconsistant bore temperatures or hot spots that cylinder bore distortion. This is not good for oil control.
Another area was the loose cylinder bore diameter and bore taper tolerances . These added to the possible cylinder bore heat distortions make it difficult for the piston rings seal when high engine rpm and low MAP conditions occured ( ring flutter). Obvious proof are the design changes that the GMPT did for the LS2 ( which has much tighter tolerances ) that uses a lower combined ring tension than the OEM 9 lbs LS6 and has thinner 1.2mm rings( OEM LS6 1.5mm) .

Don't forget the inadequate LS1 PCV system , then LS6 PCV changes to the LS2 Pcv changes . All improvements yes,but still oil consumption is not eliminated. Factory race engines used for the street require a little tolerance

 

golden link...thnx for sharing