Cadillac Seville SLS Questions

Get answers to questions about your Cadillac Seville SLS at RepairPal. Find solutions, diagnose problems and get back on the road.

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the manual says refer to dealership and the dealership doesn't know how to do it

Refer to answer #3

Head gasket problem. Leaks from under engine???? Runs well if you keep filling it with water. water leaks out when car sitting still w/o engine running. Large brownish area under where car is parked...slow leak. If filled at night...gone in the morning and needs filling again.

car shows that it ha gas

I can hear some relays under the back seat and also there is a weird whining noise under the hood. It even does it when the car is switch to off.

Cylinder came with 2 keys. These keys turn the ignition. I had a locksmith make me a key with the raise chip and this key will not turn the ignition.


I replaced the battery last Friday and now all of a sudden the key is stuck. You can turn it on and off and it drives but it is harder to move in reverse or drive. It goes in park but does not seem to go all the way and the key will not come out of the ignition

Professor G,

Thanks again with your help with map sensor! Replaced fuel filter also as suggested, runs perfect; but still have to re prime the pump 2 or 3 times before it starts. Only code showing now is the Emission code. What next?

ziptie im in australia u requested post code ? do you mean my residental address code. cadies here are rare , having problem finding mechanic able to scan system thanks for your reply . tony

is this likely to just be in the fuse relay system at the rear or front .

2003 STS with 4.3 Northstar, is this model equipped with a onboard diagnostic link? If so, how do you access onboard diagnostics?

C.D. mag. player is dead, won't play, or eject mag.!!

It won't go in to gear i changed the brake switch it still won't go into gear please tell me what's the problem

My car was stolen with the keys so i removed my entire column once my car was located. I now need to replace the original. they are not the easiest to find so how many years off can i go?

The following codes have been read from the computer...P0122, P0741, P0174 and P0300 while driving, the engine acts like it is misfiring, with a little hesitation when accelerating. A tune-up was done last year with plugs and wires. After getting the code P0122...throttle positioning sensor, it was replaced, but the above continues to happens. P0300...fuel to rich and not being burned correctly, may have to do with the ignition coils...yes? If so, do I need to change out all the coil packs or could it just be one that's gone bad?

was working fine until a few months ago. is this the a/c control switch??

small engine oil leak. 127K miles. Told it was the lower block seal needs to be replaced. Engine has to come out. Around $1600 job. I have low oil consumption have to put in 1 to 1 1/2 quarts between oil changes 3000-4500 miles. It is in shop now having a new re-build transmission put in costing me $3000. My husband about chocked when I told him this... My husband made it quit clear I had to drive this car for another 3-5 years. The transmission problem dealer advised me 6 years ago at 78k miles; but no symptoms and I didn't want to spend the $3500 they wanted to charge me; so I just had the system flushed they didn't find any metal shaving. I started having issues 3 months ago (the torque converter seal gone intermittingly slipping out of overdrive. Running at 2000rpms at 70mph jumping to 2800 rpms; I would let off the gas to bring down the rpms and slowing accelerate back to 70mph)
The car needs a paint job too. I didn't want to buy another car; I would have to down size and really don't have the money for a monthly car payment for at least another year!
I bought this car 9 years ago from my mother in law estate after her passing it had only 56k little old lady miles on it. I can't afford to replace the same style of car. Is it worth to keep spending money???

any power there checked fuses and relays

What is the point of a air check system valve? Will it make u fail inspection?

replaced front wheel bearings and sensors. problem still there. Problem did not start until i replaced my front drivers side tire and the next day my back rear tire blew and had to be replaced. Not sure what to do? Or if i disable it will that damage the car. Please guide me.

My check engine light isn't on but on the message board it says service engine soon. What does that mean? It's a 1994 seville

Soon what does that mean

Sometimes l will turn the ignition key and l get nothing at all. I move the gear shifter into park hard and it starts. Service steering system light comes on. I can be driving at 30 mph and the car will dies out then put in park snd it starts right away. WHAT CAN THIS BE PLEASE HELP

Hi Guys , I have come to this site toget an idea what the cost would be on a rebuilt transmission I guess, AnywayMy 96 Seville sls has had service engine light, trac light (on and off)and service transmission message for six years now . When it first started I had the transmision drained, no metal shaving; but was told by the Cadillac dealership shop that I needed to have my transmission rebuilt at the time car only had 76k that the Torque convertor seal was leaking. Well I didn't do anything else other than have it flushed and new fluid. Now six year later and 51k mile (127k miles now on her) and the service Transmission light message stays on and SERVICE ENGINE LIGHT stay on and I think she has started slipping out of overdrive. When I get onto the interstate and run 70mph for about 2 miles in overdrive
at 2100 rpms the rpms race up to 3000, I let off the gas, rpms come down I accelerate again and I'm fine. It
doesn't do it all the time and then it's intermittently. Some days it doesn't do it at all. Today I took my car to the mom and pop shop across from work and had them run a scan they are getting the codes P0741 & P1574. Same codes Advance Auto got but were free and Pop charged me $50 go figure! Pop said I could let it go until she gives out completely or go have it rebuilt. I just don'tunderstand, I guess being a girl why does the transmission need to be replace; why aren't going to fix mine, replace the seals, the solenoids and stuff and put it back in? They will replace it so why do they call it a rebuilt job? I just get a bad taste in my mouth; look six years ago they wanted me to spend $3500; glad I held off! Can you help? She also has a small oil leak back of the engine area which could be taken care of at the same time the trans work is being done right? The engine does burn oil about a quart between oil hanges (told that was normal for the Northstar engine). Update: Over the weekend I decided not to let off the as and see what would happen if I pushed her, not good, it was like it wasn't the transmission at all like she was misfiring rpms were up at 3000 at 75mph but she was
surging jerking...I had all plugs & plugwires replaced about 20k miles ago? Could this be a misfire? If so shouldn't the mechanic got a code on this too? Or is this the reason for the second code P1574? God what is a girl to do to find a good mechanic these days she
can trust? I'm not stupid but why do all shops what to keep you in the dark? I know they only see people when something is broke and we need em to fix it but come on don't take us to the cleaners! I really want her to be in good health I would like to keep her on the road for another 100k, instead of buying another car I would like to spend the money on her running like new, new paint is this a good idea I just need to find a good mechanic in south georgia!