Hi GUYS!

Need some advice here. I finished my oil consumption test last wednesday 1-2-02. My service advisor submitted the paper work to the service manager, curious as to how long I should wait for a response. Is this someting that takes awhile, or should i have be notified pretty quick. The results indicated about 1 qrt every 500 miles, excpet for when I drove to Houston which was a 1,000 miles round trip. it did not burn any oil, I had to have the oil checked in houston, and then again when I got back home After the long highway trip the car continued to burn oil at the same rate of 1 qrt every 500 miles. please someone advice me as to what I need to donextI would liketo talkto someone who has had these problems. My vette is a 2001.....Thanks guys!

 

Is there not a single soul out here who has not had this problem?

 

Thank God I have not had this problem, but many have! Demand that they at least install the new "ring/repair pack" that is available for cars like yours. I would want the new pistons too...... :D :yesnod:

 

You'll get some replies...many others have dealt with this ...ttt

 

I had the oil consumption issue but it was a small issue compared to the defective oil pump that eventually (because of GM's lack of insight) led to having my engine rebuilt.

While I was discussing how GM was unable to diagnose my oil pressure problem (even though I told them in the beggining what was wrong) with the service manager and GM rep, the subject of my documented oil consumption came up.

The GM rep wanted to immeidiately bore my engine and replace the rings/pistons with "1 over pistons" that would be hand fitted.

I would demand to talk with the Service Manager about the problem and do the following.

1. tell him that you would like to speak to a GM rep about your documented oil consumption problem
2. ask him to show you or review the TSB for oil consumption problems.
3. in a very business like manner mention that you know of dozens of C5 owners that are getting new rings because of this engineering problem with the LS1/LS6 piston to cylinder wall clearance issue.
4. in the same manner mention you are considering having GM buy back your car because of this and that the 1st steps are to resolve the issue with the SM or dealership.
5. also read this and print it out for the SM to read http://www.c5registry.com./2k2z06/page5.htm

If that doesn't get his attention go to another dealer.

I think they bored my engine and hand fitted pistons because I was a test dummy for this solution.

sorry it looks like the link has expired.
TSB #01-06-01-023
Higher Than Expected Oil Consumption (Replace Rings)
1999-2001 Chevrolet Camaro, Corvette, 1999-2001 Pontiac Firebird with 5.7L Engine (VINs G, S -- RPOs LS1, LS6)
Condition
Some owners may comment on higher than expected oil consumption. When checked, the oil consumption could be in the range of 400-600 miles per quart (700-1000 km/L).
Cause
The cause for this condition may be an interaction between the piston rings and the cylinder bore in vehicles that are operated at higher RPMs -- typically manual transmission vehicles driven in a manner where the engine is frequently or consistently operating at greater than 3200 RPM.
Correction
A new set of piston rings is currently available through GMSPO. The new rings are part of a complete piston ring kit. Install only the number 2 compression ring and the oil expander ring from the piston ring kit. All other rings in the piston ring kit should be discarded. The original number 1 compression ring and the oil ring rails should be re-used in their original positions on the piston. All pistons should be used in the same cylinder bore.
Important
Do not dress or hone the cylinder bore. Nothing should be done to change the bore finish for this condition. Changing the bore finish may aggravate the condition.
Refer to the Unit Repair Manual for appropriate ring removal and replacement procedure.
The number 1 compression ring and the upper and lower oil expander rails are re-used because they are already broken in for the bore that they are in. The new number 2 compression ring is made with a very sharp edge that will break in quickly.
Changing only the piston rings noted, with no change in driving style, should change oil consumption to an acceptable level. Changes in driving style that reduce the amount of time spent at higher RPMs will also positively effect oil consumption.
In addition to the standard size piston ring kit listed below, a 0.25 mm oversized piston ring kit is available. The oversized piston ring kit should only be used in those rare instances where the cylinder bore size has been machined larger to accommodate the 0.25 mm oversized piston rings.




[Modified by Gary2KC5, 1:11 PM 1/11/2002]

 

i had the oil consumption problem, and took mine in to Superiior Chevrolet. i had already mentioned the issue to them several times before, so they did a quick check of their service logs and saw that oil had been low when bringing the car in for the regular 2500 mi oil change. they got the kit and replaced the #2 rings in 2 days. no oil consumption now. :)

as long as you have a competent GM service shop to take it to, i would recommend this fix.