20 Most Recent 1998 Cadillac Seville Questions & Answers

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My 98 cadillac seville wont start when i turn the

To help you identify the starting problem, first, check for trouble codes (DTCs) using a good quality code reader. You should also do a battery load test to make sure your battery is ok. As far as replacing a head gasket is concerned, that is a major exercise requiring you to remove the offending head, pull the old gasket and replace it. There is no sealant that will fix a head gasket leak, and this is not something you should attempt without training.
1/11/2018 1:22:08 AM • 1998 Cadillac... • Answered on Jan 11, 2018
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Air vents in front are not blowing

there is a problem with ur hvac mode door actuator unless the door is jammed u need the actuator common problem
1/1/2018 4:55:47 PM • 1998 Cadillac... • Answered on Jan 01, 2018
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Hello Everybody, Just purchased a 1998 Seville STS

Fuel Gauge A fuel sender is located in the fuel tank and is a resistive type sender. The fuel sender is connected to the Rear Integration Module (RIM) via discrete inputs. The filtered fuel data is sent from the RIM to the IPC, via the class 2 serial data line. The RIM sends the IPC filtered fuel data on a change of 0.5 liters or more with a resolution of 0.10 liters. The IPC uses the fuel data received from the RIM and a software program to determine the proper fuel gauge pointer position. The IPC updates the display within 300 milliseconds of receiving the data from the RIM, if the IPC can not communicate with the RIM, the fuel gauge pointer indicates empty, the IPC sets a DTC, and dashes are displayed in all DIC fuel information. The RKE receiver module is located in the rear storage compartment attached to the underside of the rear shelf. The module performs the functions of interpreting the signals from the transmitter and relaying the information to the requested module function via class 2 bus. The receiver module does not directly control any functions but is a interpreter for the transmitter to tell other modules what is requested. The receiver module is able to differentiate between the various transmitters and must be programmed to accept signals from all transmitters if one or both are to be replaced or spares added. Rear Compartment Lid Release Description When the rear compartment lid release switch is pressed, ground is applied on CKT 1447 (PNK/WHT) at terminal D6 connector 1 of the instrument panel integration module (IPM). If the powertrain control module (PCM) is sending a message the IPM will send a message via the class 2 data line to the rear interface module (RIM). The RIM applies ground to CKT 1344 (LT BLU), with the valet switch in the ACCESS position, voltage is applied from the ALDL fuse 4, through the TRK REL relay coil. The relay energizes, the contacts close and voltage is applied from the BODY fuse to the rear compartment lid release solenoid. The solenoid is connected to ground G402 via CKT 850 (BLK). Your best bet ,take it to a qualified repair shop . Replacing the RIM without knowing can cause more problems then you all ready have. Programming the module needs to be done at the dealer . Checking for DTC'S - diagnostic trouble codes DTC B0530 Fuel Level Sensor Stuck DTC B0532 Fuel Sensor Shorted To Ground or Open DTC B0533 Fuel Sensor Feedback Shorted High
9/26/2017 7:11:12 PM • 1998 Cadillac... • Answered on Sep 26, 2017
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I have a 1998 Cadillac Deville D Elegance and have

Instead of guessing as to what the problems is have it diagnosed at a qualified repair shop . Electrical testing needs to be done , charging system out put testing . voltage drop test electrical circuits . A bad ground wouldn't cause the battery to go bad , not charge properly is about all . Was the battery tested before it was replaced ? load and capacity tested ? What's the voltage Measurement at the battery with the engine running ? If the battery failed as many times you said it did , without testing i would suspect a over charge condition .That would be a guess without testing. The charging system on your vehicle is computer controlled . Battery Common Causes of Malfunction A battery is not designed to last forever. With proper care, however, the battery will provide years of good service. If the battery tests good but still fails to perform well, the following are some of the more common causes: • A vehicle accessory was left on overnight. • The driving speeds have been slow with frequent stops (stop-and-go driving). • The electrical load has exceeded the generator output (particularly with the addition of aftermarket equipment). • Existing conditions in the charging system, including the following possibilities: - An electrical short - A slipping belt - A bad generator - A bad generator voltage regulator. • The battery has not been properly maintained, including the following situations: - A failure to keep the terminals tight - A failure to keep the terminals clean - A loose battery hold down. • There are mechanical conditions in the electrical system, such as a short or a pinched wire, attributing to power failure.
8/19/2017 4:04:02 PM • 1998 Cadillac... • Answered on Aug 19, 2017
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Windows dont work

You checked the DRVMDL fuse in the rear fuse box ? The rear fuse box under the back seat. Also the PWR WDO circuit breaker in the rear fuse box. Power Windows Inoperative - All Step Action Value(s) Yes No DEFINITION: All power windows inoperative from all door window switches. 1 Was the Power Door System Diagnostic System Check performed? -- YES - Go to Step 2 NO - Go to Diagnostic System Check - Power Door Systems 2 Remove the PWR WDO circuit breaker. Using a DMM, measure the resistance between circuit breaker terminals. Is the resistance within the specified range? 0-5 ohms YES - Go to Step 4 NO - Go to Step 3 3 Replace the PWR WDO circuit breaker. YES - Is the replacement complete? -- NO - Go to Diagnostic System Check - Power Door Systems -- 4 Using a DMM, measure the voltage between both rear junction block PWR WDO circuit breaker #57 terminals and ground. Is the voltage within the specified range for either measurement? 10-15 V YES - Go to Step 5 NO - Go to Power Distribution Schematics . 5 Repair CKT 1040 for an open or high resistance at rear junction block. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? -- Go to Diagnostic System Check - Power Door Systems
7/27/2017 10:04:19 AM • 1998 Cadillac... • Answered on Jul 27, 2017
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1998 cadillac seville battery light flickers at traffic signals

Sounds like your belt to the generator or alternator is slipping on acceleration.Turn off eng an ck tension by moving belt up and down at point between alt and pully. should not move more than 1 inch. The other lites may be due to low battery level.
5/15/2017 12:19:54 AM • 1998 Cadillac... • Answered on May 15, 2017
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Caddilac ignition locked

You need a new ignition switch lock cylinder. You must first read the resistance of the key to order this part. It is the little wire embedded in the black plastic near the shank of the key, you need a Digital volt-ohm meter to read it.
7/8/2016 8:13:42 PM • 1998 Cadillac... • Answered on Jul 08, 2016
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Where is the amp and how do i check it in 98 cadillac

Radio Amplifier Left hand rear of the passenger compartment, behind the rear seat back. Check the connections , check power an ground . Connector Part Information ?€¢ 12110088

?€¢ 24 Way F Micro-Pack 100 Series (GRY)

Pin Wire Color Circuit No. Function A1 PPL 1952 RH Front Tweeter Output - A2 LT GRN 1852 RH Front Tweeter Output + A3 BLK 1856 LH Front Tweeter Output + A4 YEL 1956 LH Front Tweeter Output - A5 DK BLU/WHT 346 Rear Shelf Subwoofer Coil 1 Output + A6 LT GRN/BLK 1794 Rear Shelf Subwoofer Coil 1 Output - A7 YEL 1860 Center I/P Midrange Output + A8 LT BLU 1960 Center I/P Midrange Output - A9 DK GRN 1795 Rear Shelf Subwoofer Coil 2 Output + A10 LT BLU/BLK 315 Rear Shelf Subwoofer Coil 2 Output - A11-A12 -- -- Not Used B1 DK GRN/WHT 368 Right CD Changer Input B2 BLK/WHT 372 CD Changer Common B3 BRN/WHT 367 Left CD Changer Input B4 LT GRN 1948 Right Audio Input - B5 LT GRN/BLK 512 Right Audio Input + B6 DK GRN 1947 Left Audio Input - B7 TAN 511 Left Audio Input + B8 DK BLU/WHT 653 Chime Input/Return B9 PPL/WHT 652 Chime Input + B10 -- -- Not Used B11 PPL 1807 Class 2 Serial Data Line B12 PPL 1807 Class 2 Serial Data Line Radio Amplifier (UX8) C3 showgif.do?image=35456 tif.gif Connector Part Information ?€¢ 12064749

?€¢ 2 Way F Metri-Pack 480 Series (BLK)

Pin Wire Color Circuit No. Function A BLK/WHT 651 Ground B RED 1242 Battery Positive Voltage (B+) Check

3/22/2016 10:04:08 AM • 1998 Cadillac... • Answered on Mar 22, 2016
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Heat blow cold out passanger side even when

the part is under the dash, passenger side which is a actuator motor that runs off the programmer. It will open and close the heater box door depending where you set the heat tempreture range. There is one for both sides and the right one is the bad one
1/3/2016 7:42:50 PM • 1998 Cadillac... • Answered on Jan 03, 2016
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Where is starter relay located?

Most cars has under engine on the middle.
10/19/2015 3:47:43 AM • 1998 Cadillac... • Answered on Oct 19, 2015
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1998 Cadillac Seville car battery gets to hot & kills car off

check the charging system for overcharging then have the battery checked for a short. these are the usual reasons for a battery to get hot.
4/18/2015 5:52:24 PM • 1998 Cadillac... • Answered on Apr 18, 2015
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I need to know which fuse controls the lights that illuminate the radio and heater controls on a 1998 Cadillac Seville

Make sure you don't have the instrument panel dimmed all the way down if so turn it up, then if that doesnt work make sure your head lights are turning on when they are suposed to, if not you may have a bad light sensor on the dash or bad headlamp switch.
2/26/2015 10:34:37 PM • 1998 Cadillac... • Answered on Feb 26, 2015
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I need to know what controls the lights that illuminate the radio and heater controls on a 1998 Cadillac Seville. the displays are working. Just not the buttons on each are not lit

head light switch make sure you don't have the instrument panel dimmed all the way down if so turn it up, then if that doesnt work make sure your head lights are turning on when they are suposed to, if not you may have a bad light sensor on the dash or bad headlamp switch.
2/26/2015 10:33:09 PM • 1998 Cadillac... • Answered on Feb 26, 2015
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Torque specs for the intake manifold 1998 Cadillac Seville STS

89lb in.
2/26/2015 10:26:38 PM • 1998 Cadillac... • Answered on Feb 26, 2015
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I have a 1998 Cadillac Seville with Electrical problems . No one can trace it . New battery drains over nite . Car will die while driving . What can it be ?? Thanks .

Sounds like the computer is not powering down open the hood pull the pcu fuse and check it the next morning and see if it drains the battery if it doesn't the computer could be bad or has a bad ground but that's a place to start
1/21/2015 4:23:12 AM • 1998 Cadillac... • Answered on Jan 21, 2015
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