Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Did you get a great deal? Let us know in the Values & Prices Paid section!
Meet your fellow owners in our Owners Clubs

Cadillac Owners: Problems & Solutions

SylviaSylvia Posts: 1,636
edited March 2014 in Cadillac
Cadillac owners of all years and models, share your mechanical expertise.


  • Hi, hopefully someone can help... On my 93 Eldorado the parking brake is supposed to be released when you put the car into gear. Problem is, mine is not. I don't know of any manual release to the brake, it always just pops right out when i put the car into Drive. Thanks in advance.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 64,490
    You know, I don't know this particular model but I'm going to guess that the brake is released by a vacuum diaphragm somewhere right above or connected to the parking brake itself. So i would suspect a vacuum leak (leaking hose) or diaphragm assembly.

    You MUST have a manual release in there somewhere.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 64,490
    Well...this is not a job you should tackle unless you have the tools and manuals...SO, I'm NOT giving you advice here on how to fix this, only to mention a few things.

    What is probably happening is that on your car the primary brake system and ABS system are not being bleed at the same time. In some early ABS you need a tool (like a meter) to recycle the ABS pump so that all the old fluid and air is purged out of the ENTIRE system. So I think your ABS pump is continually contaminating your brake system because you can't control it.

    I don't know what the GM tech was thinking unless you've run your ABS pump while it was dry. That would not be good.

    But I don't see why a good GM tech couldn't go through all the bleeding procedures and see what's what from there.
  • I own a 1999 Seville SLS, 30,000 miles. Yesterday the automatic garage door opener failed to work; the light next to the buttons did not go on and the transmitter failed to open the door.
       This morning, same hour, it's working. This is the second time in about a month for this new, intermittent problem.

    Any ideas? Any solutions?
    (I also posted this on the general forum for cadillac).
  • nickcnickc Posts: 1
    I am puzzled by the occasional 'mysteries that happen with this car. On long trips, say 200 miles or more when the car is well warmed up, Cruise control can be off or on, RPM is at about 2675 to 2750, the engine very quickly seems to shut down and restart. So it really like a surge except the RPM's do not go up they go down about 1500 RPM and them the car is back to humming along. It might do this three times in a row over a minute or once every three minutes. Any thoughts? I've noticed at this point if I stop on the side of the road the RPM's will read anywhere from 1500 to 2200 and will only go back to 750 or so if I shut the car down wait a few minutes and then it will be normal for awhile. Thanks for any insight!
  • The motor will improve mileage after 6000-8000 miles. The car should have synthetic oil in it from the factory if you change it to regular oil it should seat faster that the 8000 miles, but after that I would go back to synthetic. The reason for this is that about 2 years ago they had an problem with the engines using too much oil and they ended up with a new piston and ring combo that takes a little while to seat into the cylinders. The seats are different that the ones in your '01 base Deville. The '04 model has heated and cooled seats, and the way they are designed the cooling fans built into the seat make it a little firmer at first, but they do "break in" so to speak.
  • tonybosstonyboss Posts: 5
    would appreciate any tips/help in solving problem in closing the trunk of my '93 seville sts
  • tonybosstonyboss Posts: 5
    im sure i need to replace all four shocks and struts for my '93 seville sts. any tips or suggestion where i should go or what i should do
  • rob27rob27 Posts: 2
    the electronic relay is out this is a expensive part however you can manually reles
    the parking break by pulling a little lever located right next to were the foot lever
    connects to the floor on the right its about 2 inches long pull this forward twards yourself and it will release.
  • isellhondasisellhondas Issaquah WashingtonPosts: 20,225
    Overtightening the lug nuts has nothing to do with heating and cooling. If you don't tighten them properly it'll actually BEND (warp) the rotors. Some cars are very touchy on this.
  • chuck46chuck46 Posts: 6
    I am trying to convert the system over to the with a retro-fit kit. I have searched high and low for the lower pressure valve. Can't locate it. There is one that I did find, but that seems to be the high-presure outlet. HELP. TY for anything you can tell me.
  • snygaardsnygaard Posts: 1
    I am having the same trouble with my 91 cadillac eldorado. Cannot find the low side. Anyone help with this would be appreciated.
  • chuck46chuck46 Posts: 6
    FOUND IT AFTER A LOT OF SEARCHING, It was right there on the dryer . Completeted conversion and ac is working fine now. Feel around the dryer and it might be there .
  • chuck46chuck46 Posts: 6
    I want to change the brakes on this car, the right rear has something different than the left one , what is that covering the brake? Is there something different about how you do that 1 wheel?
  • bflinnbflinn Posts: 1
    i have a 1978 cad and somtimes it backfir when I excilerate fast orwhen its cold it willbackfires.some times when turning a corner, I changed plugs wires distribiter and cap. I changed the fuel filter and fuelpump in the tank, I t still backfires,
  • bspears1bspears1 Posts: 2
    I'm trying to identify 1978 transmission with first gear ratio of 2.48:1, and 1979 transmission with first gear ratio of 2.74:1.Your help on model numbers and identification lables and numbers would be appreciated. Thank you. :confuse:
  • weman27weman27 Posts: 7
    I am thinking about buying a '99 Seville SLS w/ 85K, seems to be in good shape. Are there any obvious warning signs I should look for that could lead to costly repairs ?
    Any comments or guidance would be appreciated.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 64,490
    Yes, oil burning. I would do a cylinder leakdown test for sure.
  • bspears1bspears1 Posts: 2
    No takers!! Thanks, any way. :surprise:
  • I bought a 1954 four door cadillac it only moves in low gear and reverse i found a transmission from a 1961 cadillac will it fit in my 54 cadi
  • isellhondasisellhondas Issaquah WashingtonPosts: 20,225
    Not even close!

    The 1954 used a bulletproof HEAVY four speed Hydramatic.

    In 1961, they were using a POS transmission called a Roto Hydramatic also known as a "Slim Jim". It won't fit.

    Try to find an "old timer" in a transmission shop who can overhaul the transmission you have in your car. Do NOT go to one of the "chains" for this!
  • bvnljbvnlj Posts: 1
    Can anyone help with some info?
    I have a 1994 Cadillac De-ville with a 4.9 V8. When motor is warm and I accelerate or backing off the accelerator it makes a rattle noise (sounds like valves). the noise sounds like we are using cheap gas but we only put in premium. The car runs great with lots of power, but the noise is annoying. Took it to the dealer and they had me do an "upper engine clean-out" and that solved it for a little while but it has come back. My question is, what is an "upper engine clean-out" and can i do it my self or is their someting else I can do myself to reduce the noise?

    Thanks for the help
  • isellhondasisellhondas Issaquah WashingtonPosts: 20,225
    Rislone Concentrate in your oil and go drive the car...HARD! Don't abuse it but do wind it out in gear. Take it out of overdrive and take it on the freeway to build up some RPMS.

    Your engine sounds like it's carboned up.

    I am a non believer in oil additives but I have seen Rislone work many times.
  • Mr_ShiftrightMr_Shiftright Sonoma, CaliforniaPosts: 64,490
    now hold on is an OIL additive going to help carbonization in the combustion chamber?

    And I'm not sure this is his problem never get pinging when backing OFF the gas pedal.

    I think folks are on a wild goose chase here, if the symptoms are being correctly stated.

    I think he might have an exhaust leak.
  • I recently purchased a sedan deville w/ a 4.9 and have had the same sound, mainly during revving when I'm in neutral. We have discovered a leak around or in the catalytic converter, and are pursuing repair options now. I will repost with future findings. My transmission Hesitates and clunks when I take off from a stop with any speed. I have had a couple people tell me that it is normal for a FWD V8, but I am unsure of this analysis and would like another opinion. I am aware that the tranny needs service, but can anyone help me predict if I need to get immediate attention for this.
  • willis1willis1 Posts: 1
    Can anybody direct me where I can obtain an wiring harness for a 96 Northstar V8 engine.
    This engine is build into a Lamborghini kitcar, and the wiring harness has been butchered. Many wires are completely missing, AC, Speedodomer wire, temperature wire, MAF sensor wiring, I can go on and on with this.

  • I just acquired a '91 Sedan Deville with 143k miles and I have noticed some transmission noises. Predominantly when I accelerate quickly, on the attack the car hesitates for a fraction of a second and then it knocks. Not a loud knock, but you can feel and hear it grab. A friend told me that that is normal for FWD V8s and it was no big deal, but I want other opinions. Please advise.
  • riannkiriannki Posts: 2
    Out of the blue, my ETC with 52k miles on it has something draining the battery. I replaced the battery, only to find the same thing happening again. The dome lights come on, but it won't turn over. Yesterday, I opened the driver door and there were no dome lights and a "clicking" sound coming from the rear of the vehicle for a few seconds, then the dome lights came on, and the clicking stopped. Any thoughts on this would be most appreciated..........also, this car is rarely driven, it is my Sunday car.
  • raj8raj8 Posts: 1
    I have installed new alternator and battery. I had the starter ck ok.Now it is getting to me. The car runs on battery draining it real fast.It seems to start when it wants to. I should explain,turn on the key to start and all you hear is a click, the starter does not run.If you play with it for a while or just leave it, it starts up ok but may or may not start again for a while.The alternator is not charging the battery also.
  • kagedudekagedude Posts: 407
    Hi, my coworker said that his 99 Cadillac Deville's battery died a few times and once he got "system shutdown" he wasn't able to get out of the car and had to have someone open the door from outside. This happened to him over the summer and 2 weeks ago. Now I'm thinking why would they make cars like that where you can't get out if the battery dies? Is this a fact or is his car just defective?

This discussion has been closed.