1998 Cadillac DeVille Service and Repair Manual

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Covers all 1998 DeVille trims — Base Sedan 4-Door, Base Limousine 4-Door, Base Cab & Chassis 4-Door +2 more ·
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1998 Cadillac DeVille service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical coverage with wiring diagrams
  • Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more

Trims covered

  • Base Sedan 4-Door
  • Base Limousine 4-Door
  • Base Cab & Chassis 4-Door
  • d'Elegance Sedan 4-Door
  • Concours Sedan 4-Door

Engines covered

  • 4.6L 281Cu. In. V8 GAS DOHC Naturally Aspirated

Index / Table of contents

  • Body
  • Brakes
  • Chassis Electrical
  • Driveline
  • Engine Cooling
  • Engine Electrical
  • Engine Mechanical
  • Engine Performance & Emission Controls
  • Fuel System
  • General Information & Identification
  • Heating, Ventilation, & Air Conditioning
  • Hybrid & Electric Vehicle Systems
  • Steering
  • Suspension
  • Transmission, Clutch, & Transfer Case
  • Wiring Diagrams
NHTSA #97V18300027/10/1997Component: VEHICLE SPEED CONTROL

VEHICLE DESCRIPTION: PASSENGER VEHICLES, HEARSES AND LIMOUSINES. THE CANISTER PURGE EVAPORATIVE EMISSIONS HARNESS ON THESE VEHICLES WAS MISROUTED.

Consequence

THE HARNESS COULD INTERFERE WITH THE CRUISE CONTROL AND THROTTLE LINKAGE PREVENTING RETURN TO A CLOS

Remedy

DEALERS WILL INSPECT THE VEHICLE FOR PROPER ROUTING OF THE HARNESS, CORRECT AS NECESSARY, AND INSTAL

NHTSA #97V23200018/12/1997Component: STRUCTURE:BODY:HOOD:HINGE AND ATTACHMENTS

VEHICLE DESCRIPTION: PASSENGER VEHICLES. THESE VEHICLES WERE BUILT WITH HOOD HINGE PIVOT BOLTS WHICH CAN BREAK DUE TO AN IMPROPER HEAT TREAT CONDITION. THIS DOES NOT COMPLY WITH THE REQUIREMENTS OF

Consequence

IN THE EVENT OF A VEHICLE CRASH, THE HOOD COULD BE PUSHED BACK THROUGH THE WINDSHIELD GLASS POSSIBLY

Remedy

DEALERS WILL REPLACE THE HOOD HINGE PIVOT BOLTS.

NHTSA #00V21700011/08/2000Component: AIR BAGS:SIDE/WINDOW

VEHICLE DESCRIPTION: PASSENGER VEHICLES. SOME OF THE SIDE IMPACT SENSOR MODULES HAVE QUALITY PROBLEMS THAT CAN CAUSE AN INADVERTENT DEPLOYMENT OF THE DRIVER OR PASSENGER SIDE IMPACT AIR BAGS. THESE

Consequence

HOWEVER, AN OCCUPANT CAN RECEIVE SOME INJURY FROM A DEPLOYMENT.

Remedy

DEALERS WILL REPLACE THE DRIVER AND PASSENGER SIDE IMPACT SENSING MODULES. IF THE VEHICLE HAS HAD TH

TSB #10208027

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and

TSB #10171318

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and

TSB #10082506

THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPROGRAM THE MEDIA DISC PLAYER WITH THE LATEST CALIBRATIONS TO CORRECT A CONDITION OF THE REAR ENTERTAINMENT SYSTEM NOT OPERATING AS INTENDED IN COLDER AMBIENT TEMPERATURE AREAS DUE TO CALIBR

TSB #10246631

Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules

TSB #10027804

GENERAL MOTORS CORP: SPECIAL COVERAGE ADJUSTMENT; ANALOG ONSTAR DEACTIVATION. *PE UPDATED 2/17/09. *PE

TSB #10026586

BUICK\CADILLAC\CHEVROLET\GMC\HUMMER\OLDSMOBILE\PONTIAC\SAAB\SATURN SERVICE CAMPAIGN: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SPECIAL COVERAGE ADJUSTMENT-ANALOG ONSTAR DEACTIVATION. FCC RULED IN 2002 WIRELESS CARRIERS WOULD NO LONGER RE

TSB #10020584

KNOCKIG NOISES OR EXCESSIVE OIL CONSUMPTION. VEHICLES WITH LD8 OR L37 4.6L V8 ENGINES. *KB

TSB #10019202

MISSING CAMSHAFT INTERMEDIATE DRIVE SHAFT PLUG - SERVICE VME. *TT

Showing the 8 most recent of 63 technical service bulletins on file with NHTSA.

19990308Component: VEHICLE SPEED CONTROL:LINKAGESCrash reported2 injured1 fatalities

WHILE DRIVING INTO A PARKING SPACE THE VEHICLE SUDDENLY ACCELERATED FORWARD, RUNNING INTO A BUILDING AND CAUSED INJURY AND A FATALITY. ALSO, TOTAL BRAKE FAILURE OCCURRED. CAUSE UNKNOWN. *AK

19990308Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTSCrash reported2 injured1 fatalities

WHILE DRIVING INTO A PARKING SPACE THE VEHICLE SUDDENLY ACCELERATED FORWARD, RUNNING INTO A BUILDING AND CAUSED INJURY AND A FATALITY. ALSO, TOTAL BRAKE FAILURE OCCURRED. CAUSE UNKNOWN. *AK

20020705Component: AIR BAGSCrash reported2 injured

AT A VEHICLE CRASH SIDE AIRBAGS DID NOT DEPLOY. CAUSE UNKNOWN. DEALER NOTIFIED.*AK CONSUMER WAS NOT IN MOTION AT TIME OF ACCIDENT, ANOTHER MOTORIST CRASHED INTO CONSUMERS VEHICLE, 2 PEOPLE WERE INJUR

20120208Component: ENGINE AND ENGINE COOLINGCrash reported1 injured

CUSTOMER WAS DRIVING VEHICLE DOWN ROAD, ALL OF A SUDDEN COMING UP TO A STOPLIGHT CAR SUDDENLY DIED, AT THE SAME TIME WHITE SMOKE CAME BILLOWING OUT THE BACK OF THE CAR, IT CAUSED A TRAFFIC HAZARD IN W

20050705Component: POWER TRAIN:AUTOMATIC TRANSMISSIONCrash reported1 injured

DT: WHEN THE CONSUMER PULED INTO HER DRIVEWAY, SHE NOTICED THAT THE DISC BRAKE TRACTION STABILIZER LIGHT ILLUMINATED ON THE DASH. SHE IMMEDIATELY PUT VEHICLE INTO PARK AND EXITED THE VEHICLE TO OPE

Showing the 5 most serious of 310 complaints filed with NHTSA.

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