1990 Cadillac Allante Service and Repair Manual

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Covers all 1990 Allante trims — Value Leader Convertible 2-Door, Base Convertible 2-Door ·
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1990 Cadillac Allante 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

  • Value Leader Convertible 2-Door
  • Base Convertible 2-Door

Engines covered

  • 4.5L 273Cu. In. V8 GAS OHV 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 #06E04300019/05/2006Component: FUEL SYSTEM, GASOLINE

CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURE

Consequence

THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. I

Remedy

HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOB

TSB #10246631

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

TSB #615096

SOME OWNERS OF CERTAIN VEHICLE MAY COMMENT ABOUT A CONDITION IN WHICH THE CONVERTIBLE FOLDING TOP DOES NOT LATCH PROPERLY AT THE WINDSHIELD HEADER. *TT

TSB #603612

COMMENTS ABOUT A CONDITION IN WHICH THE CONVERTIBLE FOLDING TOP DOES NOT LATCH PROPERLY AT THE WINDSHIELD HEADER. *YC

20080410Component: SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITEDCrash reported

WITHOUT WARNING, BRAKES ON MY 1990 CADILLAC ALLANTE FAILED AND I RAN INTO A TRUCK AT A TRAFFIC LIGHT. *TR

19990508Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTSCrash reported

THREE TOTAL BRAKE FAILURES TO DATE. TWO RESULTED IN ACCIDENTS WHEN THE ALLANTE HAD TO BE CRASHED INTO TRUCKS ON EACH OCCASSION TO STOP WITHOUT INJURY TO PEDESTRIANS. PROPERTY DAMAGE IN EACH CASE WAS

20010111Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS1 injured

WHILE EXITING THE HIGHWAY THE BRAKES DID NOT RESPOND WHEN DEPRESSED, CONSUMER TRIED TO STEER CLEAR OF AN UTILITY POLE BUT THE STEERING DID NOT SEEM TO RESPOND CAUSING THE CONSUMER TO HIT THE UTILITY P

20010111Component: STEERING1 injured

WHILE EXITING THE HIGHWAY THE BRAKES DID NOT RESPOND WHEN DEPRESSED, CONSUMER TRIED TO STEER CLEAR OF AN UTILITY POLE BUT THE STEERING DID NOT SEEM TO RESPOND CAUSING THE CONSUMER TO HIT THE UTILITY P

Showing the 4 most serious of 48 complaints filed with NHTSA.

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