Ever since the truck was new and the oil consumption light would come on after approx 2000 miles and say add enging oil. the truck has been in the shop since purchase. the dealership has been very accommodating with the loaner cars but the time and trouble it takes to get the car there, swap everything out from one car to the other be late for work. I have searched for the resolution to this issue and there does not seem to be one. the dealer keeps telling me that the truck needed a gasket, oil plug, rods, sensor, and now pistons (which are on back order for 2 weeks). This last time the car was there for 4 days. I am calling GM to piss and moan about this.

I have a business selling and Servicing Fitness Equipment and if a customer has an ongoing issue dam right they want it replaced and I do it for them. try that with a car dealer and you get this is what you purchased and we have to keep trying to fix it.

I have just discovered this website and have read other posts with regard to excessive oil consumption issues on the 2007 Suburban. We have been dealing with this problem since our car was relatively new and our problem is as similar to other posts. The dealership has tried 3 oil consumption tests and can't find the reason for the loss. There isn't any evidence at all and Chevy has told the dealer to replace different gaskets/valves to delay the inevitable need of a new engine. I have recently contacted Chevy customer service who has put a district specialist on our issue. I only hope they are able to bring about a satisfying end to this problem. On a recent trip our car went through 5.5 quarts in under 2000 miles.

I am just starting the process that everyone else is describing- my Suburban is consuming at least 1 Qt every 2500 miles with the low oil light coming on with oil life at 60%- the dealer stated there are no leaks and they will start marking the dipstick so they can start the process with GM- I have been told that replacing valve covers is next, and then they will basically do everything except replace the engine in order for GM to avoid the $5000 new engine claim- do yourself a favor and google "like a knock"- this is an article that explains this known issue- my dealer has acknowledged that there are known cases out there and they also acknowledged that this can be a 6-12 month process to resolve!!!! Good luck

Well like everyone else my vehicle uses 1 1/2 of oil every 2000miles. When I bring it in they say the study shows this is normal. Bull I'm used to GM snowing us. We had a Tahoe that they never could fix a front end problem. We sold that at a loss. But we thought it was the day the vehicle was built (Ha Ha). This is a 2007 and here we go again.

I have read about this problem and everyone says the same thing, till we sue them(gm)

they won't do anything about this problem.

We were told that engines were changed and still burning oil or using it somehow. Well all I do is Complain to GM. They don't make a consumer friendly environment. They will most likely be gone in a few years.

Just hope they don't kill you or me.

I purchased a used 2007 Suburban LTZ from a dealer in Holland, MI (Denooyer) with 47,000 miles and I currently have 61,000 miles on the vehicle. I have changed the oil three times now and before the second and third oil changes the oil level warning light came on. The engine uses 1.5 quarts every 2000 miles. I talked to the dealer and he said to bring the vehicle in every 500 miles to have the oil level checked and they will consider contacting GM about the problem. Because of the economy I plan to sell the vehicle, but I cannot with a clear conscience pass this problem on to the next guy. After reading all of the same experiences I am having, I believe a class action suit is the only way to fix the problem. If someone knows how to go about putting this together, please include me!

Update from Jan 16, 2011: My dealer has been great and stood behind the vehicle to get the problem fixed. They replaced the pistons and valves. I have put 20k miles since the fix and so far no problems with oil consumption.

MANY ATTEMPTS... OIL CONSUMPTION TEST Restarted 3 TIMES... AND A RUN AROUND, READ BLOG, Called SchneiderWallace.com/ClassActions . A lot of people that read this don't have the time to write their post.

If you are one of these people or have made a previous post please update your post. If you problem remains, please contact the above firm. The more calls they get the faster this will be pursued. The local dealer admits there is a problem. They told me they're to keep putting band aids on it. (keep adding oil) As soon as Chevy has a resolution we'll be the next to be notified.

Meanwhile, the effort to take it in for oil level checks and the stress caused by the lack of confidence has become unwarranted! The call to the firm will result in a couple of fast returned calls to verify vehicle information and their attorneys will use this information to see if further pursuit of the claim is worth pursuing. Please ring their phone off the hook!

About 3 months ago I'm driving down the road and the low oil light comes on. This was about 5,000 miles since the last oil change. Put a quart in. At about 7,000 miles, low oil light again. So I take it to get the oil changed.

Now just yesterday - my wife and kids are driving back from California and she calls to say the low oil light is on. Mileage since last oil change? About 2,000! It's just like everyone says in these posts - 2,000 or so is the magic number. I am so completely bummed because the whole family love, love, loves our Suburban.

I really don't understand how a car - or truck - goes from using minimal oil to sucking it down fast! And yet, there's no apparent solution. If you find a fix that actually works, please post! Thank you!

I wish I would have read these complaints prior to purchasing this Suburban 4 months ago used. First it was leaking oil, then transmission fluid, and how it is consuming 1.5 qts of oit every 2000 miles. I found out from a friend that he had the same issue, screwed around with the dealer for a year, and the dealer finally got him a new car. I really don't want to deal with this going forward. My dealer is tracking the issue and once we can report 3 incidents, then the GM rep will get involved. The dealer was tracking other 07 Suburban owners and they think it is a seal problem.

I'm at 60,000 miles. It had been using a quart every 2000. Now, the oil pressure gauge dropped to below 20 and light came on saying low oil pressure shut off engine. Dealership diagnosed a failing oil pressure switch, recommended replacing at a cost of $700. I took to my guy, he replaced it and the pcv valve. He let it run - no change. He hooked up another gauge to it. But, no change. Problem still there. Now, I need to go back to the dealership and explain they misdiagnosed it and they need to address the fact that this is within the powertrain (under the powertrain warranty).

Problem started after the 15000 mile service. I have had the car in several time for the "engine oil low" light being on. Every time the dealer says we can't find any leaks any where. So they put dye in the oil on my last oil change " I had to pay for the dye of course. $13.00" My oil level low light came on again when the car still read 62% oil life left. I checked the oil. It didn't even register on the dipstick. I added a quart. Took the car in today for them to check the oil and change it. They couldn't find any leaks and told me that it was within GM specs for this vehicle to consume a quart of oil every 2000 miles. and that my vehicle was a quart low. Mind you I just added a quart myself. This has been going on for over a year now and this is the first time they have told me about the specs for oil consumption. my 02 avalanche doesn't consume any oil and it has 140,000 miles on it. I guess they think we are stupid. However, most stupid people can't afford to drop $48,000 plus for a new vehicle. They wonder why they are failing as a company. Once you buy the car they don't stand behind it. I'm all for a class action suit.

I have taken this car in repeatedly to our Chevy Dealer and every time they kept having me repeat the oil consumption test, the last time I took it in they promised to take the engine apart and try to determine the cause of the excessive oil consumption, (I am using about a quart every 500 miles) When I brought the car in, one of the service managers state that it may be as simple as a gasket needing to be replaced.

I am now very disappointed because I have started to research this problem and find it to be a common complaint and I now understand that my dealer has just been jerking me around for about a year. My next letter is to the consumer protection agency.