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Cadillac DeVille



  • 2000 DTS has had a con;tinuing dead battery problem since 1200 miles. Dealer has had car since 11/28/00 and cannot ;find problem. Has gone to area rep to start process for replacing vehicle. Has anyone else gone through replacement process?
  • Our 98 DeVille with 26,000 miles is burning 3 qts. of oil every 6,000 miles. Dealer ran a consumption test and wants to perform a "Carbon Treatment". Has anyone had any experience with a carbon treatment? Is 3 qts every 6,000 mile normal? We are using Mobil 1 and it hasn't slowed down the consumption.
  • 3 quarts in 6,000 mile averages out to 1 qt in 2,000 miles, which is quite acceptable for a north star. I've had 2 of them and they both used 1 qt in 1500 miles. Cadillac says that 1 qt in 800 is still k.

    The carbon treatment should be done on your car, if for no other reason, because it's good for it. They are attempting to free up your piston rings which they believe are sticking due to excessive carbon build-up and could be causing your oil consumption. While that is very common, since most Cadillac customers don't drive hard enough for a high performance engine like the north star to keep that from being a problem, I don't believe that you will see an improvement, since your oil consumption won't get any better.

    And it's call deep carbon treatment and is on a TSB issued about a year ago.
  • I had a 95 that consumed 2 qts oil in under l300 miles. I ran it on the interstate daily which should burn up residual carbon. Cad replaced the heads, pan gaskets and then a short block engine. That was done at 70k. I now have l40k and no oil problems. I bought a 98 deville and now have 42k on it with no problems. If the rings are the problem, I do not believe these carbon reducing efforts will free the rings. I am glad I had an extended warranty. I bought one on the 98 as well.

    Knoxville, Tennessee
  • Any thoughts? I'm considering buying a 95 Deville with 94,000 miles. It's a nice "clean" car inside and out and the price seems to be right. I will surely have my mechanic look at it, but in the mean time I wanted to mention a few things to you that I noticed on the test drive. First: The car did not shift smoothly from first gear to second. Second: When I put the ignition in the "run" position the gas pedal made a thumping noise as it fluttered.
    Overall are my expectations too high in thinking I can get another 100,000 miles out of it? I'd appreciate any comments/experiences. Thanks.
  • I'd look at a '96 or newer if I were you. The '95 was the last year of the 4.9liter OHV motor. The '96 introduced the Northstar to the base Deville trim which means 275 horse power instead of 200 in the '95. The Northstar has totally different transaxle (4T80E) which is more robust.
    If you must go with the '95, have the mechanic do compression tests on the motor and have the transaxle carefully inspected. I still recommend that you look into a later, Northstar equipped model.

    Good Luck
  • bolivarbolivar Posts: 2,316
    the 94 was the first year for the deville Northstar. Didn't your read HarleyBills note just above yours with his story about oil consumption on a 95 Northstar?????
  • If you read my post carefully, I said "The '96 introduced the Northstar to the base Deville trim". This does not include the Concours which got the Northstar in 1994. The Northstar system got its start in the 1993 Eldorado Touring Coupe, (No ETC back then) as well as the '93 STS.

    The point that I was making above had to do with the fact the the BASE TRIM Deville did not get the Northstar Standard until 1996. I suggest that you re-read Harleybill's post. No where does it suggest that he is talking about a Northstar Motor when discussing his oil consumption problem.

    That, my friend, is what I am talking about!
  • Carbon treating will not hurt anything, you should do it periodically anyway. Question, what brand of gas are you using? A quality brand with cleaner additives or cut rate. That can make a big difference in carbon build up in you engine as well as the type of motor oil you are using, (i.e. paraffin or tar based, Pennzoil is an example of the former and Havoline the latter). Stick with a good paraffin based oil and change often. I follow these simple guidelines in all my vehicles, and get great trouble free service from them, my 1989 DeVille just turned 250K with no major engine, transmission, or transaxle problem yet and still eats Lincolns for breakfast (and a few Lexus' as well)
  • etharmonetharmon Posts: 399
    I believe Harleybill's 95 is a Concours. The 94 and 95 "base" Devilles had the old OHV 4.9 liter V8. That engine is descendent of the old 4.1 liter V8 of the early 80s which was a nightmare. Cadillac seemed to have worked the bugs out by the time they enlarged it to 4.5 then to 4.9, but I have still heard of some problems with 4.9s. Personally I'd skip this engine and look for one with the excellent Northstar V8. In 96, all Devilles got the Northstar and the 4.9 was deep sixed.
  • bolivarbolivar Posts: 2,316
    Ok, I'm willing to learn.

    So, in 94 and 95 deVille had two different motors, the 'old' motor in the base model and the Concours had the Northstar, right?

    I didn't know that. I thought when they went to the Northstar in the deVille, all models had it.
  • Has anyone else suffered this problem which good year claims was caused by a chuckhole. I just noticed that Saudi replaced tires on TT's for same problem, although their's were 45 series tires. by the way if you haven't avoid chuckholes because tires are $234 and dealer said they are good for less than 20,000 miles. what is everyone else replacing tires with?
  • You Got it! As etharmon discussed in his post #373, he is absolutely accurate. The 4.9 motor which was standard in the base model Deville until thru 1995 is, in fact the direct descendant of the HT4100, which was probably Cadillac's biggest Engineering disaster ever. And, while the motor got better in it's progressive iterations to 4.5 and eventually 4.9 liters, it was never anything to write home about. I went through 3 4100's in my 1985 Eldorado Biarritz before giving up and finally installing an Olds 308ci. motor.

    Anyway, now you have the facts!
  • gth1gth1 Posts: 1
    Thinking of purchasing an EW for a '98 DeVille d'elegance with 54k. Any suggestions for good cos. with comprehensive covg. would be appreciated. Not even sure if I need one? Electrical seems to be my main concern. gth
  • robh3robh3 Posts: 157
    I just saw my first '00/'01 Deville limo this evening. We don't seem to have too many here in Southern California, which is why I hadn't seen one in the flesh until now.

    Anyway, it sure was a beauty! Grey with fat tires/chrome "DTS-like" wheels. Very sharp compared to all those town car limos out there.
  • Recently, while on an extended trip away from home base, my 2000 DTS would not downshift on grades or when "punched to pass". Cad dealer in another city said perhaps it was a bad Throttle Position Sensor and he could have one in a couple of days. Not wanting to tread water waiting for the part I said I could wait until I got home and have my local dealer make the repair. I was told they "erased the codes" from the computer and this would correct the problem - which it did. Car performed perfectly the 800 miles home. Dealer at home could not find a problem. Said because car was performing normally and because codes had been erased he couldn't diagnose any problem and couldn't arbitrarily replace the TPS under warranty as GM wouldn't honor the cost unless the dealer could show a problem (computer codes). Anyhow, the service manager said he didn't think anything was wrong with the TPS and that "perhaps you picked up a stray radio signal - two way in a construction zone or something - which githched the computer and that erasing the codes corrected the situation. Anyone heard of such a thing or experienced a similar problem? Car performing flawlessly for 2000 miles since.
  • 456ttt456ttt Posts: 13
    Went to dealer yesterday for filters - good news & bad. The air filter is the good news - it was only $13.50 so no need to try to get aftermarket on this one. Bad news, the pollen filter was $75.00 (I'll wait for 100,000 miles) Fuel Filter about $37.00 not too bad, I want to find it (under the car) to see if I want to replace it myself. 21,000 miles on the DTS since May 2000 - rides great, only the the rough engine idle remains (GM Detroit gave me a 100,000 mile warranty with zero deductible at no cost because I was unhappy, but I still want this fixed !!).
  • wwhite2wwhite2 Posts: 535
    What year was the Deville first offered with night vision ? thanks
  • 2000 - Only 8000 night vision units were made even though Cadillac took over 28,000 orders for it. They eventually retooled the line at Raytheon (the manufacturer) and now there is no supply Problem.
  • I have a question for 2000/1 Deville owners. I have just under 3000 miles on my '01 DTS and all is well. No problems to report.
    The only thing is that about 50% of the time when I start the car up in the morning, the "Check Coolant Level" message appears on the DIC. As soon as I star moving it goes away. I have checked the container for leaks and the level looks right as far as I can tell. Anyone else have this message come up??

    I posted this in the "Cadillac Meets Here" Forum so if you answered it there I'll find it. Thanks!
  • carnaughtcarnaught 'zonaPosts: 2,404
    Philly 7...Same light went on on my '00 DTS. Took it to the dealer and they did find a leak in the system. I'd suggest you have them check it out.
  • 456ttt456ttt Posts: 13
    Had same problem, but coolant level was low. Dealer couldn't find the problem, it has not happened again (so far !!).
  • I have a 2000 DHS. As posted here I have had many many problems, but all is fine now except the engine idle. I have complained and complained to the dealer. I have called Cadillac but all they do is call and bother my dealer. I have indicated my disgust on all the satisfaction surveys. Who heard your complaint and gave you the extended warranty? That would help make me a happier camper. I have heard that Cadillac knows exactly what the problem is and have no plans to do anything about it. The engine is set to idle just above the point of stalling. This gives them low emissions and better overall economy. It sucks. I am embarrassed every time I have a passenger in the car and have to come to a stop. The car is so quiet and rides so well that I thought I had a brake vibration. It finally occurred to me that it wasn't the brakes, it was the idle vibration kicking in when the car slowed.
  • There are plans on fixing it, but they are working on a few other things like the airbags on the 97-99 models. The main problem is with the crankshaft position sensor and the engine sensor. The '01 models have been corrected out of the factory. They are working on a fix for the 2000 models, it is just taking a long time. It will happen because to many people are complaining about it.
  • 456ttt456ttt Posts: 13
    My extended warranty came in a letter from Janet Hawthorne, Customer Relationship Manager. The person you want to reach however is Paul Byther at 313-667-7153. He is a great guy, very helpful and is with the President's office. I intend to call him myself in a week or two to get status on if there is a fix. The 100,000 mile, zero deductible, free extended, non-transferrable warranty was not in any way a release to GM for fixing the problem. Please let us all know how you make out. Perhaps if they start giving away more of these warranties they will finally get the problem fixed. !!
  • That is the question. I'm looking at a 1995 Cadillac Deville STD which has the 4.9L V8 with 99,500 miles on it. Appears to be in great shape. Agreed price with dealer is $8,500. What do you guys think? I know very little about Cads and this would be my first. Thanks in advance.
  • Right in the middle of the discussion of my oil burning 95 deville concours with the NORTHSTAR engine, my hard drive crashed. I picked up the old 200 pentium with its 2 gig hard drive and through it out in the backyard. I am now up and running with a new dell pentium 4.

    I had the engine replaced under warranty at about 68k and I now have l4lk on this engine and it hauls . I think the 300 hp runs better in the 95 at l4lk than the 300 hp northstar in my 98 concours with 40k. Great rides!!!!!
  • As an interstate runnin roadhog, let me tell you about what you might expect if you buy the 95 you are looking at with 99k. About l20k, my 95 concours began to rock and roll on the interstate like a drunken sailor. I discovered the air adjustable struts are a GM patented system and no aftermarket parts will fit. The front struts will cost you $450.00 each and the rear $400.00 each and this with 8.5% sales tax in Tennessee( where I live) will set you back about $2100.00.

    That was quite a surprise for me. Understand that if your struts need replacing; it is major money.
  • 93now93now Posts: 1
    Looking at a second family car, a very clean and sharp 93 Sedan DeVille with
    full carraige roof. Does anyone have any info on specific problems this year
    and model may have, or any recall alerts, especially as it is now 7 years old?
    New poster, looking forward to conversing herein.
  • carnaughtcarnaught 'zonaPosts: 2,404
    Please don't get the carriage looks like either a hearse or pimpmobile....
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