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Cadillac Seville

This category covers questions about the Cadillac Seville, a mid-sized luxury sedan manufactured by General Motors and sold through its Cadillac division. The Seville was originally released as a limited production specialty model in 1956 and was discontinued in 1960. It was reintroduced in 1975 as a regular production model and continued to be sold until it was replaced by the Cadillac STS in 2004.

975 Questions

Where is the battery located in a Cadillac Seville?

It is generally located one the passenger side of the vehicle.

How does a pickup coil work?

It's a simple hall effects switch. It has a magnet and sensor. As the sensor spins on a shaft, it passes close to the magnet or the other way around. the close pass sends a signal that is used to tell the distributor when to fire a plug wire. It's called a pickup coil because it "picks up" the signal.

1994 Cadillac Seville sls northstar v8 it overheats new radiator new theromstat water seems to be flowing no steam from exhaust what is wrong w this thing is there a way to check for a cracked head?

AnswerDid you bleed all the air out of the system after doing repair work? Trapped air will cause it to overheat. A compression test will verify if the head gasket is blown or not. Is the cooling fan working?

A compression check will not always verify a leaky head gasket on a Northstar engine. Most of the time these head gaskets fail due to faulty head bolts. The threading on the bolts slowly pulls out of the engine block, creating a gap between the head and the block, allowing combustion fumes, oil, and coolant to mix together. One thing you can do is check your oil. A leaky head gasket will make your oil look like foamy chocolate. Also, you can take the cap of your coolant reservoir, start your car, and look for bubbling or "false boiling". Excess pressure in the cooling system caused by combustion fumes leaking into it causes this, which would also signify a leaking head gasket.

How do you replace the water pump on a 1997 Seville SLS with the Northstar engine?

First off, locate a GM water pump socket just for this type of pump. Auto Zone will loan you one of these sockets for about $40 and refund the full price when you return the socket after using it to remove and replace the water pump.

Before removing the water pump be sure to clean and flush your system. Be sure to turn the heater on full heat setting to allow the coolant to run through the heater hoses too. Get a quart of the flush clean out the coolant system. This is very important on aluminum engines. It will run cooler and also your new pump will last longer and the warranty won't be void from leaving dirty coolant in the system.

I got a flush connector to hook up the garden hose and give it a thorough flush after running the cleaner through for 20-3- minutes. It may take a while to get all of the cleaner out of your system so take the time and watch for bubbles in a 5 gallon pail. Once the bubbles stop forming after 4-5 full buckets filled using the radiator tube extension you can be certain that the cleaner is out and just fresh water is left.

Once you are through cleaning and flushing the system Ssart by removing the black plastic flap panel that covers the headlights. Remove the fuse panel cover on the fender. Unplug the connector to the air box.remove the air cleaner all the way down to the bottom case that holds the air cleaner. It sits on 2 plastic pegs and lifts right off. Once you have the air cleaner and intake tube removed take off the motor mount strut bar and both brackets. If this piece is worn out you will need to replace it as well. Make a list as you take things apart so you can get new parts to replace the worn ones. The bolt with the hose connected to it if removed will have to have sealant applied to it during reassembly.

Remove the top radiator hose and tuck into the grill opening.

You will see the pump on the drivers side of the engine toward the front right behind the driver's side fan. If you need more room you can remove this fan by taking out the two top bolts and removing the top transmission line to the radiator and pushing it aside. As you pull up the fan remove the electrical connector. The fan is now out of the way. Remove the bottom radiator hose then loosen the 3/4" hose connections.

You can remove more parts to gain better access but this is not really necessary. You can remove the motor hanging bracket and the EGR tube if you feel it's necessary.

Locate the four small bolts on the water pump plate and remove them with a combination of 10mm sockets, ratchets and extensions. The lower bolt will be easier to loosen than it will be to remove without dropping it. Be very careful to only unscrew until it's loose then use a magnet to pull it out of the cover. Another trick is to use a short piece of hose to push over the bolt and then use it to unscrew the bolt and remove it without dropping it. If you do drop it and can't find it just get a new one at the hardware store. You can get the clear plastic hose there as well. heat the hose with a hair dryer to make it pliable if necessary to fit over the head end of the bolt. I found this short hose technique to be the easiest to reinstall these bolts when the time is right.

Moving on, now that you have the water pump cover plate removed you can use the special GM socket to remove the water pump. Make sure the socket is located over the vanes of the pump and seated between the tabs of the old pump. Insert a 1/2" ratchet or a breaker bar and use a length of pipe to turn the pump clockwise. This is the righty-tighty direction which will loosen the pump from the housing. This is opposite of the lefty-loosey direction since the pump rotates in the reverse direction so as to not accidentally loosen the pump if the bearing seizes prematurely.

The socket will turn the pump about 30 degrees and then you should be able to just pull the pump out of the housing. Notice the smaller tab with the notch at the top. You will have to line the new pump up the same way it came out so that the drain hole is located properly when reinstalling the new pump. Be sure to remove the O-ring from the groove and clean up any residue from the groove. Make sure to remove the groove ring and clean out the groove completely with a small knife and a wire brush.

I like to run a tap through all of the bolt holes to clean out the corrosion before installing the new gaskets and sealer. Be sure to blow out the freshly tapped holes once cleaned out.

If you don't have a tap that is this size get a longer bolt at the hardware store that is the same thread size and grind or file several notches into the end of the bolt. This will be sufficient to remove any buildup and clean out the existing threads for reassembly. It's a poor man's tap but it works and is cheap and easy to come by.

Use a wire brush, maybe even several styles of wire brushes to clean up all of the parts including inside the hose ends. Inspect carefully and replace any hoses that are cracked, frayed or worn out.

This is a good time to pour 2 gallons of distilled water into the upper radiator hose to flush out the mineral water left in it. Also pour another gallon of distilled water into the radiator fill tank to purge the mineral water from that part of the system as well.

Put sealer on the round O-ring and insert it into the circular groove in the water pump housing before installing the new water pump. Be sure to place the small tab with the notch 30 degrees to the right of top center. This will ensure that the tab is at the top once you seat the new pump with the special GM socket.

You will probably need a long breaker bar or a pipe on the end of the 1/2" ratchet in order to seat the pump properly. Make sure that the fingers on the special socket are engaged properly before exerting pressure on the pipe to the ratchet. If you have applied sealant properly this will help you to turn the pump counter-clockwise into the seated position. Check carefully that the bent tabs on each tab are located against the housing properly and you are finished with this stage of installation. With a steady, even pressure the new water pump should seat firmly when it locks in.

I found that installing the new thermostat into the cover before installing the cover to the water pump housing makes it easier to make sure that the thermostat is centered properly. Tighten according to specs for this size bolt. Do not strip the aluminum by over tightening.

Now put some sealer into the funny shaped groove and seat the new funny shaped O-ring. At first the O-ring will seem too large but keep working it into the groove with your thumbs and you will soon make it seat in the groove properly. Now push the 3/4" fitting into the hose and align the water pump plate with the holes on the water pump housing. The 3 easy bolts should be started first but not tightened until the 4th bolt is started as well. Use the clear plastic flexible tubing/hose to hold the head of the bolt to start the bolt into the hard to reach hole. You will have to move the wire assemblies around to get at this. These wire assemblies will be very stiff because of their size and age but they do move out of the way. Move the lower radiator hose one way or the other to allow access to start and tighten these bolts.

Tighten the bolts gradually a few turns at a time to seat the O-ring properly. Once snug, torque to specs for this size bolt, Do not over tighten or strip these bolts or you will have leaks.

Once you have the pump in place you can install the radiator hoses and make sure the clamps on all of the hoses are tight.

Replace the air tube and air cleaner. Be sure to reconnect the electrical connector to the air box. Replace the motor mount strut and brackets then lastly the headlight flap panel.

The heater should be set on high heat so that coolant flows through the heater hoses and doesn't trap air in the system.

Start the engine and then add GM Dex-Cool coolant. This is the only kind to use or you will void all warranties! Add slowly so that you allow room for the air to leave the system. You may have to shut off the engine and restart several times before the coolant is free of air. Add 2 full gallons of new coolant if you have extremely cold winters. Then top off the system with distilled water as needed. Recheck daily until you are certain that the system is full and free of air and has the correct cooling and low freeze temp.

Check for leaks. There shouldn't be any. To be sure, park in a dry area and let the engine idle for 5 or 10 minutes. Move the car and if it's dry you have done a good job in replacing your own water pump on a 1997 Cadillac NorthStar Engine.

Why 1990 Cadillac Seville heater blow cold air at high temperature settings?

Either you have no coolant in the engine or the climtate control system is not operating the proper air door in the heater/ac box. Open glove box door and remove the glove box 3 screws. Pull out box. look for a metal rod with a white plastic that operates the blend door. The clip has probably broken. Run car and move the heat from cold to hot and check the action. This is a common problem.

How do you replace the water pump on a 1992 Cadillac Seville?

Not sure a backyard mechanic can do...it requires a special tool to remove pump from engine. Tool cost 100 according to my mechanic.

YOU NEED TO GET A NEW MECHANIC THAT DOESN'T STEAL AND LIE! Its not hard at all. You remove the battery, the antifreeze reserve tank, the (2) bolts that hold the condensor in place, and then loosen the bolts on the pulley, then serpentine belt by putting a ratchet/breaker bar in the belt tensioner. Then you use a 1/2 socket to take of the pulley. Then you just remove all the bolts. You do need a star bit to remove two of them, but you can get that at any parts store or SEARS for less than $10. Then you scrape all the old gasket off your block and put the new gasket and pump and do it in reverse. (Don't forget that you should drain your antifreeze (drain @ bottom of driver's side of radiator. (You can remove the two bolts on top of the electric fan and slide it over to get more room to get the drain plug- BUT be careful if you don't disconnect the wires to the electric fan. Oh yeah - spend the $200 on the Cadillac OEM pump, I just put a lifetime warranty one from advance on and it leaked out of the shaft the day after i put it on. Good luck

What size motor is optional in the 1963 Cadillac?

The only motor I've found was standard on all models in 1963 was a 325 horse power 390 cubic inch v-8.

How to Change Cabin air filter 2000 Cadillac Seville?

The Cabin Air Filter is located underneath the drivers side, to the right of the accelerator.

What do you reset after changing out a battery on a 2002 Cadillac Seville?

There is nothing to reset except the radio station presets and possibly radio code if the radio has a theft deterrent feature. Nothing else for you to do.

What type of oil goes in a 99 cadillac deville?

You can use Mobil 1 10 30. Any 10 30 oil with a starburst symbol on it can be used for this type of vehicle.

1996 Seville steering pump how to replace?

You will need to remove the power steering pump pulley. Once that is off you will see the three bolts that pass from the front of the block to the pump body.

Your Cadillac sedan deville will not start?

02 cadillac deville wont crank or start the entire dashboard illuminates and everything work when the switch is on seems like it wants to crank but doesnt.

I had a problem for years with my 1991 Caddy and kept changing starters for a while. My problem was that I wasn't getting a good read on the security chip in the key. Next time it happens: turn it off, take the key out, wait at least three minutes and try again. Check your manual to see if that is still the procedure. By the way I decided to live with it. Every start is a roll of the dice.

What are the differences between a 94 Seville SLS and a STS?

The Cadillac SLS has a 275 bhp NorthStar v8. It comes with smaller wheel/tire package and less STANDARD options.If you look at them from the side you'll see the SLS usually has a large "Door Protector" Molding down the side that wraps into the bumper and the STS does not. The STS has a large ground effect front and rear bumper and minimal to no body side molding. The STS came with more bells and whistles in 94 like the combined Audio and climate control stack in the center that an SLS may or may not have depending on date of manufacture. Hope that helped Dave H SLS IS SEVILLE LUXURY SEDAN STS IS SEVILLE TOURING SEDAN PAUL G

How do you get to the back speakers in a 206?

The same as the front speakers - Using a torx screwdriver to undo the screw in the handle and the one or two around the edge of the door card, and then its the same type of clip as on the front to pop out

How do you locate a starter on a 1998 Cadillac Seville sls?

Hopefully I'm assuming correctly, your Seville contains a Northstar engine. The starter is located in the center of the engine under the intake manifold. If that sounds unbelieveable to you, don't go near it, bring it to Cadillac. Good luck

Where is Fuse diagram for 2000 Cadillac Seville sls?

The fuse diagram is found on the inside cover of the fuse panel. It is also found inside the owner's manual book for the car.

Where are the cylinder locations for a 2002 cadillac northstar?

Cylinder numbers 1 and 5 are in the center console, and the rest are toward the end of the tail pipe. You may want to have the car running at 6500 RPM while you inspect the tail pipe in order to varify cylinder location.

Your 1992 Cadillac Seville trunk will not close all the way down is it the trunk motor or the pull down actuator?

ANSWER:

There are two fuses that power this system:

A 40 amp Maxi fuse in the under-hood fuse panel.

A 15 amp fuse in the under-dash fuse panel.

Are you sure you checked both?

Is there a "Trunk Ajar" light on the dash?

From there, check that you're getting power to the pull-down motor at two points:

1. The Orange wire

2. The Dark Green wire

The Black/yellow wire is the ground feed that goes to the latch switch. It provides the ground for the pull-down motor, so see if it is providing a ground. If so, the motor itself is suspect and should be checked for binding etc. prior to replacing.

If you don't have the funds to replace the motor pulley, simply consider the following:

Simply tap the silver bar located on the motor's left side downward into it's pulled down ending place. Having done this, your trunk will lock and close and protect things in your trunk as well as theft of your car. Just keep tapping with a gentle hammer hit until the trunk closes. Your electric trunk open will still function (if it is already functioning) and the water/snow will stay outside where it belongs. Replace motor later. It's about $40 US dollars as I recall.

I found that the hammer technique did not work, so I opened the motor to gain access to the rotor and turned the rotor manually to adjust the position of the silver bar. Doing this put the trunk light switch out of commission, so I removed the trunk light and now keep a flashlight there. Put the rotor back in its housing and reattach housing, so that manually adjusted position of the silver bar is retained.

I did everything that they said in this answer, but nothing happened. What i did to make it work was to make sure the switch on both the motor (next to the silver latch) and the trunk lid (i small black switch in the housing).

What is the best gas to use in 1999 Cadillac STS?

The best and only gas to use to keep your caddy emmission clean is 93' octane. preferably from a Shell's gas station.

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