1994 Cadillac DeVille Service and Repair Manual

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Covers all 1994 DeVille trims — Base Sedan 4-Door, Concours Sedan 4-Door ·
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1994 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
  • Concours Sedan 4-Door

Engines covered

  • 4.9L 300Cu. In. V8 GAS OHV Naturally Aspirated
  • 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
No active recalls The 1994 Cadillac DeVille has no recalls on file with NHTSA.
TSB #10246631

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

TSB #10010847

SERVICE ENGINE SOON LIGHT ON AND CHUGGLE OR SURGE. DIAGNOSTIC TROUBLE CODE P0741 OR DIAGNOSTIC TROUBLE CODE 39 (TCC STUCK OFF). *TT

TSB #10006332

4.0L L47, 4.6L LD8 L37 ENGINE WATER PUMP COVER P/N 12571913- THERMOSTAT LOOSE. ALSO INCLUDING MODEL 2003 CADILLAC ELDORADO. *MR

TSB #10005549

REVISED HVAC BLOWER MOTOR INSTALLATION PROCEDURE. *TT

TSB #10004769

THIS BULLETIN IS BEING ISSUED TO INFORM DEALERS OF ENHANCEMENTS TO CRANKCASE, OIL DISTRIBUTION PLATE AND OIL PAN SEALING BY USING RTV SEALANT. *TT

TSB #6088914

ENGINE OIL LEAKS ALONG THE UPPER TO LOWER CRANKCASE JOINT. *TT

TSB #606086

SOME CUSTOMERS MAY COMPLAIN ABOUT A ENGINE COLD / KNOCK / TICK NOISE. *TT

TSB #602983

CONCERNS OF DOOR HANDLES ON WHITE PAINTED VEHICLES TRUNING YELLOW. *YC

Showing the 8 most recent of 31 technical service bulletins on file with NHTSA.

20050106Component: AIR BAGSCrash reported2 injured

WHILE DRIVING AT APPROXIMATELY 15 MPH IN A RAIN STORM CONSUMER RAN OVER A LARGE HOLE IN THE STREET WHICH WAS ABOUT TO BE FILLED WITH CONCRETE, AND AIR BAG DEPLOYED INADVERTENTLY. DRIVER AND PASSENG

19980518Component: SEAT BELTS:FRONT:WEBBINGCrash reported2 injured

VEHICLE'S SHOULDER HARNESS ALLOWS THE PASSENGER TO MAKE THE SHOULDER HARNESS LOOSE AGAINST THE BODY INSTEAD OF FIRM, RESULTING IN THE PERSON BEING THROWN ABOUT ON SERIOUS IMPACT IN THE VEHICLE. DEAL

19991025Component: AIR BAGS:FRONTALCrash reported1 injured

WHILE TRAVELING 40MPH AND AS A RESULT OF AN ACCIDENT AIR BAGS DID NOT DEPLOY, CAUSING INJURY. PLEASE PROVIDE FURTHER INFORMATION. *AK

19960103Component: AIR BAGS:FRONTALCrash reported1 injured

DRIVERS AIR BAG DID NOT DEPLOY UPON A FRONTAL COLLISION. TT

19960103Component: AIR BAGS:FRONTALCrash reported1 injured

PASSENGERS AIR BAG DID NOT DEPLOY UPON A FRONTAL COLLISION. TT

Showing the 5 most serious of 185 complaints filed with NHTSA.

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