Last post on Dec 03, 2013 at 1:46 PM
You are in the Chevrolet Suburban & Tahoe
What is this discussion about?
Chevrolet Suburban, Oil, SUV
#18 of 80 Oil Over Consumption
Apr 24, 2012 (12:27 pm)
My 2007 Suburban was identified as consuming oil beyond GM specifications first noted at 33,000 miles. Service tech told me that overconsumption was identified. When I returned the truck to be repaired he had 'lost the documentation and said that because it was his first overconsumption test he did not know what to do'. Started second oil consumption test at 57k. Documented that Truck uses 1 quart per 1444k miles. After determining this Service manager told me that was within GM specifications, that's when I had to pull the out the Chevy Specifications document and read it to him. He told me to bring it in but was unable to tell me what was to be done or how long it would take.
If this is occurring to you, here is some advice: At the start of the consumption test agree whith the tech/service manager where the oil mark is on the dip stick. With my truck, after the GM oil change, the oil line was above the add line at the start of the test. When you bring the truck back observe how much oil is being added. The service tech said it was full at the top of the hash mark on the dip stick, but that is not where the oil test started! Maybe it is only my dealer but you need to watch everything like a hawk.
#19 of 80 Re: Suburban Oil Consumption [bnahikian]
May 02, 2012 (12:41 pm)
I'm in a similar boat. I purchased an 07 Suburban last August with 45000 miles on it, still under GM drive train warrenty for another 7 months and 55,000 miles. After owning a 1990 GMC Suburban, a 1999 GMC Suburban (which we still have), and a previous 1986 GMC Jimmy which all worked out very well, we decided to get a newer used one. One month after driving it around the low oil light came on, down a quart so I filled it up and thought that was odd since the oil life had read 99% when I purchased it. Another month later down a quart. I filled it up and took to the dealer then did some research on oil consumption and found it's a known issue. The dealer (not the original I purchased from because they are much farther away but happened to have the specific Suburban with options I wanted when I purchased it) started me on a monitoring schedule. Basically between 980 and 1200 miles i was down a quart which is below GM specs (they believe 2000 miles for 1 quart of oil is OK.) They did both remediations, the pcv/valve cover remediation and then later the oil pan remediation of which neither solved the problem. Now the dealership is giving me the run around. They won't contact GM on it and are trying to reach my extended warranty company, but getting put on hold for long periods of time where they have to drop. They told me GM won't do anything more beyond the two remediations. I'm outside warranty now (over 5 years old) but I reported this within warranty, so fighting it via that angle for the momment. I've told them I want in writing from GM that they won't fix this, but so far not getting far, still dancing with them.
#20 of 80 Re: Suburban Oil Consumption [nhchevyowner]
May 03, 2012 (7:02 am)
Have you contacted Customer Assistance already? Just wondering! If we can be of assistance, please let us know by getting in touch via email at socialmediagm.com
GM Customer Service
#21 of 80 Re: Suburban Oil Consumption [bnahikian]
May 03, 2012 (12:10 pm)
I have the re-manufactured engine installed and it is running fine, although between the dealer charges and new engine my wallet is $5,000 lighter. The guy that replaced the engine tore down my engine and wasn't exactly sure where the problem came from. The dealer's preliminary diagnosis was a cam lobe problem. All that could be noticed is that the valve in #6 wasn't seating properly, looked like some contamination, maybe coolant on the top of the valve, so there may of been a slight crack in the head. After he pulled the head, the oil ring on the piston was broken, and one of the compression rings was frozen in the compressed position. I will post the pictures when I download them. So I don't really know what caused the failure, and glad I didn't spend the $1,100 the dealer wanted to pull the engine apart and diagnosis it. Either way, the problem is definitely a mfg. defect. As I said before, GM customer care was a joke.
#22 of 80 Re: Suburban Oil Consumption [gmcustsvcsarah]
May 03, 2012 (12:18 pm)
Good luck with Customer Assistance, my experience was awful, and after saying they would help, and fortunately I didn't spend the $1,100 they said I had to for a exact diagnosis, they said they changed their mind and will not do anything. Over a week I went through 3 levels, all with foreign accents and names of Merica, Christian and Oscar, and conflicting stories from each. I'm guessing my calls were channeled to India, or somewhere like that. I hope you have better results than I had. If anyone is considering buying a GM vehicle with this year and engine, I would say STAY AWAY, there is problems, and they won't back up their poor manufacturing standards.
#24 of 80 Re: Suburban Oil Consumption [bnahikian]
May 14, 2012 (6:05 pm)
I too am having problems with my 07 Suburban. I am on my 5th Chevy product, two Corvettes, one Tahoe, one Blazer and now a 07 Suburban. I have always been a fan of GM, but this truck will be my last. I have the oil problem. I am adding up to two quarts every 3,000 miles and now I have lost 3rd gear in the transmission. It happened while my family was on vacation in Louisville, 500 miles from home. I called a local Chevy dealer to get help, but because it was a Saturday morning they could not help me and told me that I would have to wait till Monday. I could not stay till Monday so I had to ship the truck home. I have 77,000 miles on the truck, but it was first put into service in Sept of 2006 so I am not under warranty. This fix will bankrupt my finances. GM’s lack of commitment to quality and poor customer service has ended my customer loyalty.
#25 of 80 Re: Suburban Oil Consumption [suburbanowner]
May 15, 2012 (10:05 am)
I'm sorry to see that your family vacation to Louisville was disrupted by a transmission issue. If we can look further into this situation with you, please send the following information to socialmediagm.com: your name/Edmunds username, phone and address, the last 8 of your VIN and current mileage, and the name of your involved dealership.
GM Customer Service
#26 of 80 Re: Suburban Oil Consumption [low2quarts]
Jun 20, 2012 (9:19 am)
I have a 2007 Suburban and it too had an oil consumption problem. Last fall the dealership replaced the pistons and I've havent had any additional problems with the oil. Two of my friends have suburbans, one has a 2008 the other has a 2009, both of them have had the same issue as mine.
Incidently, this 2007 was a replacement vehical from GM when my 2005 had an isolated incident in which a solution could not be found. After being in and out of service the summer of '06 (at least 10 times)..GM stepped up and replaced it...with no grief!! Doesnt sound like everyone else has had positive experiences with GM.
#27 of 80 Suburban Oil Consumption
Jun 21, 2012 (11:17 am)
Following up on my April 12, 2012 post, I had my oil changed, after GM replaced the pistons, rings and valve stem seals, and all seems good with no oil consumption! I’m about 2000 miles into my next 3000 mile oil change and the oil is still at the top of the dipstick. Thanks GM Service for you help in resolving this problem.