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Cadillac DeVille General Care & Maintenance



  • Just got a used 2000 Cadillac DeVille without a maintenance schedule. Does anyone know where I could get one; or, what is schedule for Oil changes, Tune-ups? Also, I thought I remember reading that you can use regular gas (87 octane). Is this recommended? Thank you in advance for your help.
  • bolivarbolivar Posts: 2,316
    EBay always has owners manuals for bid, for all kind and years of cars.
  • im tryna recharge my A/C unit on this 98 deville but its like aint nothin goin in...I got the gage and it be reading over in the yellow zone, but the dash keep sayin..."low refridgerant - A/C off" its gettin hot out here i need some help
  • geo9geo9 Posts: 739
    In a GM car when the refrigerant (spl) is low the
    compressor will not turn on and pull it in.
    You have to pull the plug off the compressor and
    "jump it" to switch on the compressor.

    Your best off going to a AC service place for a
    full testing, then evacuate the system, then recharge!
  • bolivarbolivar Posts: 2,316
    The error code for 'low refrigerant' will not let the compressor kick in, so you will not be able to pull refregerant in.

    You need to re-set the error code.

    For a 1998 Cadillac, I'm pretty sure the codes can be reset yourself using the temp buttons on the dash. You need to 'google' for other Cadillac online forums, where there will be detailed info about how to display and reset the codes. It is rather straight forward.

    With the codes re-set, you should hook up the refrigrant can, then start the car and turn the A/C on, and hope it will pull in enough before the car re-sets the error code.

    And, jumping the compressor would probably work, just don't fry anything doing this. Jumping the sensor might also do it. I think, I am not sure, the sensor for low pressure is on the pipe that goes across the firewall. The sensor is on the passenger side of the car in this tube.
  • the hood cable is broke i cant open the hood what do i need to do? :confuse:
  • geo9geo9 Posts: 739
    That ones gonna be tricky !!!!!!!!!
    Not sure how the 89 grille is held on or if its connected
    to the hood ??????? Can't remember how my 90 was.

    You can eyeball thru the grill and see if you can see the
    hood latch release. If so you may be able to "trip" the
    latch. Or get underneath and reach up and try to get hold
    of the cable and pull it to release it.............

    Tricky and a PIA but you can do it !!!!!!!!!!!!!
  • bolivarbolivar Posts: 2,316
    When my dad was old and senile and had forgotten about there being a second lever you had to release after 'popping' the hood, he just used a large crowbar on his 1966 Ford pickup hood.

    Came right open. There always was a little U-shaped dent in the front of the hood afterwards.

    I took the truck away from him and drove it for about 7 years. The dent didn't bother the operation of the truck at all.
  • my grill comes out looked at another cad think i can trip it i get your drift thanks
  • dude its a caddy not a ford truck :) :) :)
  • bolivarbolivar Posts: 2,316
    I bet a crowbar will open it.
  • took the grill out used a metal coat hanger got it on the first try thanks for the advice. :) :shades:
  • powerfltpowerflt Posts: 7
    I think it was the 2002 MY that Cadillac reset the upper and lower limits on the tire pressure system to looser tolerations. In my 2003 DTS I only had the tire pressure message come on once when the gas station attendant overfilled a hot tire on a very (below 0) day. Let some air out, never been on since. ;)
  • I purchased my 04 Deville about 4 months ago from a cadillac dealer. I just took it in for an oil change. To my surprise the air filter was filthy. Look like it hadn't been changed for a year or more. Never seen one that dirty before.

    Appearantly, the dealer overlooked it when they inspected the car. I should have complained to the sales and service mgr, but I didn't think of it at the time.

    Anyway, I just wanted to raise awareness to other Caddie owners out there.

  • bobheisebobheise Posts: 2
  • bolivarbolivar Posts: 2,316
    Open the drain on the bottom of the radiator, or remove the lower radiator hose at the radiator.

    Refill with 50/50 Dexcool.
  • hi i have 98 cadillac deville and the steering wheel is gross so i bought an original steering wheel and was wondering how to change the airbag cartridge without it deploying??? and responds would help alot plz
  • 2001dts2001dts Posts: 6
    I hear people talkng about the Northstar and oil consumption. I use 5w30 Mobile Clean 5000 and Lucas Oil Stabilizer and I promise she runs like the Cadillac LMP02. ACDelco Platinum spark plugs, Purolator PureONE air filter. I must say I do not use any other gas but 93 at either Shell or BP. I have Goodyear Eagle RS-A tires, but they feel kinda hard. I need a good high performance all season tire. 235/55-17. I see alot of DeVille DTS and DHS with the Vogue Tires are they good tires?

    There is a missing on a cold start. I took it to Bill Black Cadillac in Greensboro, NC and they said it wasnt the head gasket. My coolant level is still the same, I still get the missing. There is no codes on the dash board. I was thinking its a bad coil, but a code would pop up. Thats my only problem and the car has 122k miles on it.
  • 2001dts2001dts Posts: 6
    I usually let it go down to 5% on the info screen. I use Mobile Clean/Super 5000 and Lucas Oil Stabilizer!
  • bolivarbolivar Posts: 2,316
    The miss probably is a coil. Replaced one on our 2005, and it missed pretty badly, and it was not setting a code.
  • 2001dts2001dts Posts: 6
    That's $435 for one coil...ACDelco!
  • martianmartian Posts: 220
    My Dad's 1999 has 120,000 miles, and the water pump is leaking. Dealer wants $1200 to replace the pump.
    This sonds awful high.
    Howver, if fixed-what if the head gasket blows?
    Can the water pump be replaced by myself-or does the job nvolve pulling the engine?
  • bolivarbolivar Posts: 2,316
    $1200 is way, way too much money for a Northstar water pump. The water pump is at the top, left side of the motor. It's rather easy to get to. I think there are a few things to take loose, but as I said, they are at the top of the motor and easy to reach.

    The only thing different about it - it takes a special tool to remove the water pump. But it's like a $35 tool, just like a huge socket with tangs on it. The tangs slip into slots on the pump, and it turns out. IT HAS LEFT HAND THREADS!!!! It turns about 1/8 a turn, then the pump pulls out. There is a cover over the pump and it might take a new gasket. A wild guess would be about $75-$100 for the pump.
    Take the car to and independent garage. As if they know how to take a Northstar water pump out and if they have the special tool needed. And then get an estimate for the job. $300 should be the max needed.
  • 2001dts2001dts Posts: 6
    I wonder if they make an after market radiator for the 2000-2005 model DeVilles. Brands like "Be Cool" etc. It would be nice, bc my Northstar generates tons of heat. I was told that by changing the antifreeze to newer, will cool it off. What do you guys think? Becauae honestly I haven't changed it in about 6-8 years. How long is the life of DeX-Cool? Does antifreeze break down, element wise or something?
  • bolivarbolivar Posts: 2,316
    For a long time Dexcool, or whatever the stock coolant is called, on a new car is about 100,000 miles or 5 years. If you've got 5 years on it, change it. And, yes parts of the coolant do break down, mainly the anti-rust and lubricating components.

    Why are you lookin for a new radiator? If the old one doesn't leak, don't worry about it. I'm sure you can find a replacement radiator on the internet, I just don't know why. To get any serious cooling help, you would have to find a 'high performance' radiator that has addition rows, etc, etc. You Cadillac is a car where you would not find 'high performance' parts.

    Change the coolant. If you can find a shop that will make a real attempt to flush out all the old coolant, on a 12 year old car with 8 years on the coolant, I would try to get as much of the coolant out as possible. Normally, at the 100,000/5yr, all the Cadallic service manual calls for is to dump the old coolant and add a 50/50 mix back. They don't say anything about flushing, and you will get only about 60% replaced. Since you've got so much time on it, I would try to get as much out as possible.

    All car 'generate tons of heat'. The engineers think they have it under control.

    A little hint. Run the AC all the time. When the AC is 'on', the fan/s run all the time. It tries to keep the temp around 195/200 degrees. If you push the 'Econ' button, this turns the AC off. The fans will not run until the coolant temp hits about 222degrees!!!!! I don't know why they designed it this way, but this is how it works. If something is wrong with the AC, and the cars computer can recognize it has a problem (low or high pressure in the AC system), it runs the car in Econ mode, not allowing the AC to turn on. And, it's going to run at higher temps. If the AC is not working, get it fixed and your Caddy will run cooler.

    Your main problem is a head gasket. There is nothing, maintenance wise, you can do to help this. Of course, I am assuming you keep the coolant at the correct level and the oil at the correct level. If not, this abuse could cause all kinds of problems.

    Drive a 1999 Cadillac and give it decent maintenance. If the headgasket blows, sell it for salvage. If any other significant thing breaks, how much the repair would take determines what to do with it. Wild guess, I would think the best cared for 1999 Cad would be about a $3,000 maximum trade allowance. If something breaks that will cost $1,000 to fix, sell the car for salvage.

    You should try to find an independent shop, with a good reputation, that can work on the car. If something does need to be repair, the cost should be half or less than a CAddy dealer will want.

    Oh, wait, you have a 2001 Cadillac. It's worth about $5,000.
  • oldfarmer50oldfarmer50 Posts: 10,701
    1993 Deville with 4.9L. How do you reset the "change oil soon" monitor so it doesn't come on every time you start the car. No manual.

    Also wondering why it would come on after only 2500 miles.

    2015 Mustang GT, 2009 PT Cruiser, 2004 Chevy Van

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