1988 Cadillac DeVille Manual

The 1988 Cadillac DeVille is a full-size luxury sedan featuring front-wheel drive, V8 engine options, advanced comfort systems, and premium amenities. This manual covers operation, maintenance, specifications, and troubleshooting for the 1988 model year. Below are key sections for features, operation, maintenance, specifications, and troubleshooting.

1. Features at a Glance 2. Vehicle Operation 3. Maintenance Schedule 4. Specifications 5. Controls and Instrument Panel 6. Comfort Systems 7. Driving and Performance 8. Safety Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: V8 engine, front-wheel drive, electronic instrument cluster, climate control, power accessories, and premium sound system.

Feature	Description
Engine	4.1L or 4.5L V8 engine options
Transmission	4-speed automatic transmission
Drivetrain	Front-wheel drive
Suspension	Computer Command Ride system
Brakes	Power front disc/rear drum brakes
Climate Control	Automatic temperature control
Seating	Power front seats with memory
Audio System	AM/FM stereo with cassette player
Instrumentation	Electronic digital dashboard
Security	Theft-deterrent system

Vehicle Operation

Starting and operating procedures for daily use.

Starting the engine: Insert key, ensure gear in Park, turn ignition.
Transmission operation: Select P-R-N-D-3-2-1 as needed.
Climate control: Set desired temperature, fan speed auto-adjusts.
Headlights: Rotate knob on left stalk for parking/headlights.

WARNING! Always fasten seat belts. Check surroundings before moving vehicle.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Oil change: Every 3,000 miles or 3 months.
Fluid checks: Weekly - engine oil, coolant, brake fluid.
Tire rotation: Every 6,000 miles.
Brake inspection: Every 12,000 miles.
Tune-up: Every 30,000 miles.

CAUTION! Use only recommended fluids and parts. Consult dealer for service.

Specifications

Engine: 4.1L V8 or 4.5L V8
Horsepower: 130-155 hp
Transmission: 4-speed automatic
Fuel Capacity: 18 gallons
Fuel Type: Unleaded gasoline
Wheelbase: 110.8 inches
Length: 196.5 inches
Curb Weight: 3,450 lbs
Seating Capacity: 6 passengers

Controls and Instrument Panel

Dashboard layout and control functions.

Instrument Cluster: Speedometer, fuel gauge, temperature gauge, odometer, warning lights.

Steering Column: Turn signal lever, wiper control, cruise control.

Center Console: Climate controls, radio, power window switches, gear selector.

Warning Lights: Check engine, oil pressure, brake, battery, temperature.

Comfort Systems

Climate control and seating adjustments.

Automatic Climate Control: Set desired temperature, system maintains automatically.
Power Seats: Use switches on door panel for position adjustment.
Memory Seats: Program positions with memory buttons.
Audio System: AM/FM radio with cassette player, seek tuning.

Tip: Allow system to stabilize for optimal comfort performance.

Driving and Performance

Optimizing driving experience and vehicle handling.

Smooth acceleration: Gradual throttle application for best fuel economy.
Braking: Firm, steady pressure for controlled stops.
Cornering: Moderate speed through turns for stability.
Highway driving: Engage cruise control for long distances.
Fuel economy: Maintain steady speeds, avoid rapid acceleration.

WARNING! Always maintain safe following distance. Adjust speed for conditions.

Safety Features

Standard safety equipment and operation.

Seat Belts: Three-point front and rear belts. Air Bags: Driver-side air bag (if equipped). Anti-lock Brakes: Prevents wheel lock-up. Theft-Deterrent: Security system with keyless entry. Child Safety: Rear door child locks.

Care & Maintenance

Exterior and interior care procedures.

Wash with mild soap and water. Wax regularly for paint protection. Clean interior with approved cleaners. Vacuum carpets frequently. Check tire pressure monthly.

CAUTION! Avoid abrasive cleaners. Do not use high-pressure washers near seals.

Regulatory Information

Meets all applicable federal motor vehicle safety standards. EPA estimated fuel economy: 15 city/22 highway. Copyright © 1988 General Motors Corporation. All rights reserved. For service, contact authorized Cadillac dealership or call 1-800-458-8006.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Battery/ignition	Check battery connections; ensure gear in Park; try spare key.
Rough idle	Spark plugs/fuel	Check spark plugs; replace fuel filter; inspect air filter.
Overheating	Coolant/thermostat	Check coolant level; inspect radiator; test thermostat.
Brake vibration	Rotors/pads	Inspect brake rotors; check pad wear; balance tires.
Electrical issues	Fuses/battery	Check fuse box; test alternator; inspect battery terminals.

Service: Contact authorized Cadillac dealer for professional service.

Emergency: 1-800-458-8006 for roadside assistance.