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
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
THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. I
HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOB
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
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
COMMENTS ABOUT A CONDITION IN WHICH THE CONVERTIBLE FOLDING TOP DOES NOT LATCH PROPERLY AT THE WINDSHIELD HEADER. *YC
WITHOUT WARNING, BRAKES ON MY 1990 CADILLAC ALLANTE FAILED AND I RAN INTO A TRUCK AT A TRAFFIC LIGHT. *TR
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
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
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.
