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
VEHICLE DESCRIPTION: PASSENGER VEHICLES, HEARSES AND LIMOUSINES. THE CANISTER PURGE EVAPORATIVE EMISSIONS HARNESS ON THESE VEHICLES WAS MISROUTED.
THE HARNESS COULD INTERFERE WITH THE CRUISE CONTROL AND THROTTLE LINKAGE PREVENTING RETURN TO A CLOS
DEALERS WILL INSPECT THE VEHICLE FOR PROPER ROUTING OF THE HARNESS, CORRECT AS NECESSARY, AND INSTAL
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
IN THE EVENT OF A VEHICLE CRASH, THE HOOD COULD BE PUSHED BACK THROUGH THE WINDSHIELD GLASS POSSIBLY
DEALERS WILL REPLACE THE HOOD HINGE PIVOT BOLTS.
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
HOWEVER, AN OCCUPANT CAN RECEIVE SOME INJURY FROM A DEPLOYMENT.
DEALERS WILL REPLACE THE DRIVER AND PASSENGER SIDE IMPACT SENSING MODULES. IF THE VEHICLE HAS HAD TH
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
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
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
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
GENERAL MOTORS CORP: SPECIAL COVERAGE ADJUSTMENT; ANALOG ONSTAR DEACTIVATION. *PE UPDATED 2/17/09. *PE
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
KNOCKIG NOISES OR EXCESSIVE OIL CONSUMPTION. VEHICLES WITH LD8 OR L37 4.6L V8 ENGINES. *KB
MISSING CAMSHAFT INTERMEDIATE DRIVE SHAFT PLUG - SERVICE VME. *TT
Showing the 8 most recent of 63 technical service bulletins on file with NHTSA.
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
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
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
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
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.
