Last post on May 16, 2013 at 4:36 PM
You are in the Cadillac CTS/CTS-V
What is this discussion about?
Cadillac CTS, Engine, Sedan
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#385 of 659 Re: Engine Problems [cady2004]
Dec 03, 2011 (4:21 pm)
Search Google for Cadillac CTS Service Bulletin or TSB. I believe it only applies to 2007 and earlier but not sure. Contact your local dealer also. Check your oil about 30 minutes after going for a drive then let the car sit a couple days and check it again on a cold engine. See if the level is the same. If it is higher the second time then oil is getting trapped on top of the heads the oil drain back holes may be partially clogged. Using a thicker viscosity oil will slow the burning issue. If you have high miles I recommend 10w-40 but make sure you switch back to a thinner oil if you live in cold winter areas.
#386 of 659 Re: Engine Problems [marso13]
Dec 04, 2011 (7:54 pm)
#387 of 659 Re: Engine Problems [k9will2]
Dec 04, 2011 (8:13 pm)
k9will here i saw the post about 4 Qts in 100 miles had to be misprint, moving on are you guys trying to tell me that the oil returns get stopped up some and slow the oil from coming back down, most of the time i ck the oil on these motors after it sits, in reply to the 3.6 is a great motor (and it does run and perform well) but the 2 cts 3.6s that i have both use more oil than normal but i will say the 1 i switched over to 10w 30 penzoil uses less than the one that has 5w 30 mobil in it. I am i the proscess of checking the oil closer to see how much oil per miles driven is being use both cars are off at college with kids hard to get them home. I agree the PCV i did not think it could create that kind of oil consumption. i purchased both of these cars after they had 90000 miles on them, but the motors run fine don't smoke but you better keep a close EYE on your oil dipstick sometimes it will shock you how much oil is gone I can see where someone could run one low on oil before they new it THAN you have motor failure
#388 of 659 Re: Engine Problems [cady2004]
Dec 05, 2011 (10:33 am)
If you do work with a dealership towards resolving this concern and would like assistance in the process, please send us an email with more information including your name/user name, the last 8 digits of your VIN, involved dealership, and a description of your past dealership visits (if applicable) that you've made to resolve this problem.
Thank you in advance,
GM Customer Service
#389 of 659 Re: Engine Problems [gmcustsvcsarah]
Dec 05, 2011 (11:50 am)
Let this act as notice to GM , the timing chains failed while my wife was driving on the freeway at 60 mph during rain storm and at that point lost engine power and had to cross 3 lanes of traffic to safety on the shoulder this to me is an unacceptable situation for anyone to be in . IF THIS OCCURS TO ME AGAIN OR IF THIS HAS HAPPENED TO OTHERS READING THIS POST THEN PLEASE CONTACT THE NHTSA NATIONAL HIWAY TRAFFIC SAFETY ADMINISTRATION IN THE USA AND TRANSPORT CANADA AND REPORT THE ISSUE TO (just go to their web site ) THEM IF THERE ENOUGH COMPLAINTS they may investigate and THEN GM MAY HAVE BE FORCED TO DO A RECALL ON AFFECTED VEHICLES for safety reasons. If you own any GM product with the 3.6L ie SRX Acadia etc these posts may also apply to you my dealer told me it was not just a CTS issue so check out other posts.
#390 of 659 Re: Engine Problems [cady2004]
Dec 05, 2011 (8:44 pm)
i think what sarah is doing for gm customers with potenial warranty problems is great , but my problems are not covered under warranty i would like to know if there is some underlying problems with 3.6 motor that gm is trying not to let out until they are way past warranty. I raced sbc motors for 15 years i understand how and why motor could use oil ,but my two 3.6s have got me confused as to how great they run & perform but keep a close eye on the oil consumpsion per miles driven, these cars look like they where taken good care of I have seen alot worse in my 25 years of owning a auto repair shop. Funny thing these cts's both have the 5l40e auto transmission in them and they both have slipping problems when put in drive sometimes on cold mornings after they sit over night. If anybody such as (Sarah) could lead me into a web site or something so i can find out how problems could be repaired without major teardowns of motors or transmissions, these cars perform to well now to consider major work, but take my eye off the oil stick long and where looking at motor failure. THANKS
#391 of 659 Re: 2008 CTS Engine OIl Consumption [gmcustsvcsarah]
Dec 06, 2011 (8:51 am)
#392 of 659 2005 CTS with the same disappearing oil problem
Dec 06, 2011 (9:04 am)
2 years ago I purchased a used 2005 CTS with <30k kilometers on it. I purchased a GM extended warranty (4 years = $4,000). Since then all maintenance visits have been done on time. BTW Oil / filter changes at the dealership cost about $165. I took the car in in August 2011 (89,000 km) because of a horribly clanking noise in the engine every time I started the car up and it lasted for about 5 minutes every time I gave it any gas. The dealer said there was zero oil showing on the dipstick. I said the DriverInfo said oil was at 58% and I was told that is only the time since the last oil change and has nothing to do with quality or quantity of oil. There were NO OTHER indicators that the engine had low oil level: no message on the Drivers display, no idiot lights, no engine warning lights. Returning from a trip Halifax - Montreal - Halifax the engine clanking noise reappeared in Douglastown NB. I took it to the GM dealer who put 4 litres of oil in the car. We had driven <4000 km (that's 4.22 quarts in 2.5k miles or 1 qt every 600 miles which I think is excessive.) I have seen several comments in this thread that 1 qt per 1000 miles may seem high but is within the understandable limits $15 per litre it gets to be really really expensive.
#393 of 659 Re: 2005 CTS with the same disappearing oil problem [bill_anderson]
Dec 06, 2011 (9:48 am)
When you had your vehicle in at the dealership to add oil, did they have any diagnosis?
GM Customer Service
#394 of 659 Re: 2005 CTS with the same disappearing oil problem [gmcustsvcsarah]
Dec 06, 2011 (6:35 pm)
dear bill you are about to have total motor failure with what you have descibed in your post stop driving it now that is if it has not locked up already what has happend is it became low on oil befor you new it and has done unreversable damage inside your motor, have it checked or will lose the motor. Keep posting to let us know how it turns out. PS oil % does not mean how much oil you have in motor, it means how much life is left in the oil that is in the motor that is the short summary of it GOOD LUCK