1988 Chevrolet Blazer Service Manual

The 1988 Chevrolet Blazer Service Manual provides comprehensive technical information for the maintenance, repair, and service of the 1988 Chevrolet Blazer. This manual covers all major systems including engine, transmission, drivetrain, suspension, brakes, electrical, and body components. Below are key sections for specifications, maintenance procedures, troubleshooting, and technical data.

1. Vehicle Specifications 2. Engine Systems 3. Transmission & Drivetrain 4. Suspension & Steering 5. Brake Systems 6. Electrical Systems 7. Body & Interior 8. Routine Maintenance 9. Troubleshooting Guide 10. Technical Data 11. Service Procedures

Vehicle Specifications

Key specifications for the 1988 Chevrolet Blazer including engine options, dimensions, and capacities.

Specification	Description
Engine Options	5.0L V8, 5.7L V8, 6.2L Diesel V8
Transmission	4-speed automatic, 5-speed manual
Drivetrain	4WD with shift-on-the-fly, 2WD available
Wheelbase	106.5 inches
Overall Length	178.5 inches
Curb Weight	4,200-4,600 lbs
Fuel Capacity	25 gallons
Towing Capacity	5,000-6,000 lbs
Payload Capacity	1,500 lbs
Ground Clearance	8.5 inches

Engine Systems

Detailed information on engine components, specifications, and service procedures.

Engine Identification: Locate VIN codes and engine serial numbers.
Tune-up Specifications: Spark plug gaps, timing settings, valve clearances.
Fuel System: Carburetor adjustments, fuel pump specifications.
Cooling System: Radiator capacity, thermostat specifications.
Ignition System: Distributor timing, coil specifications.

WARNING! Always disconnect battery before working on electrical systems. Use proper safety equipment.

Transmission & Drivetrain

Service procedures for automatic and manual transmissions, transfer case, and differentials.

Automatic Transmission: Fluid specifications, shift linkage adjustment.
Manual Transmission: Clutch adjustment, gear oil specifications.
Transfer Case: Fluid capacity, shift mechanism service.
Drive Axles: Front and rear differential service procedures.
U-Joints: Inspection and replacement procedures.

CAUTION! Use proper jack stands when working underneath vehicle.

Suspension & Steering

Front Suspension: Independent front suspension with torsion bars.
Rear Suspension: Leaf spring suspension system.
Steering Gear: Recirculating ball type, power steering standard.
Wheel Alignment: Specifications and adjustment procedures.
Shock Absorbers: Replacement and service procedures.
Stabilizer Bars: Front stabilizer bar specifications.
Wheel Bearings: Adjustment and repacking procedures.
Tire Specifications: P235/75R15 standard equipment.

Brake Systems

Service procedures for hydraulic brake system, power booster, and parking brake.

Front Brakes: Disc brakes with single piston calipers. Rear Brakes: Drum brake system with self-adjusting mechanism.

Hydraulic System: Master cylinder specifications, brake line routing. Power Booster: Vacuum-assisted brake booster service. Parking Brake: Cable adjustment and service procedures. Brake Fluid: DOT 3 specification, bleeding procedures.

Electrical Systems

Wiring diagrams, component locations, and electrical system service.

Battery: Group 78 specifications, cable routing.
Starting System: Starter motor specifications, solenoid testing.
Charging System: Alternator output specifications, regulator testing.
Lighting Systems: Headlight, taillight, and signal light circuits.
Instrument Cluster: Gauge testing and replacement procedures.

Tip: Always use wiring diagrams when troubleshooting electrical issues.

Body & Interior

Body panel alignment, interior trim, and accessory service procedures.

Doors: Window regulator service, door latch adjustment.
Seats: Seat track mechanisms, upholstery repair.
Instrument Panel: Dash component removal and installation.
Exterior Trim: Moldings, emblems, and body side moldings.
Glass: Windshield and window replacement procedures.
Top Mechanisms: Convertible top operation and service (if equipped).
Carpet & Flooring: Removal and installation procedures.
HVAC System: Heater and air conditioning service.

WARNING! Use proper tools when removing interior trim to avoid damage.

Routine Maintenance

Scheduled maintenance intervals and service procedures.

Troubleshooting Guide

Diagnostic procedures for common problems and symptoms.

Symptom	Possible Cause	Corrective Action
Engine won't start	Ignition system, fuel delivery	Check spark, fuel pressure, starter operation.
Poor fuel economy	Tune-up needed, dragging brakes	Perform complete tune-up, check brake adjustment.
Transmission slipping	Low fluid, worn components	Check fluid level and condition, pressure test.
Steering wander	Alignment, worn components	Check alignment, inspect tie rods and ball joints.
Brake pulsation	Warped rotors, worn pads	Inspect rotors, replace brake pads as needed.

Technical Data

Torque specifications, fluid capacities, and special tools required.

CAUTION! Always use specified torque values to prevent component damage.

Service Procedures

Step-by-step repair procedures for major components.

Engine Removal: Proper procedure for engine removal and installation. Transmission Service: Overhaul procedures for automatic and manual transmissions. Electrical Diagnostics: Using multimeter for circuit testing.

Service Support: Contact Chevrolet dealership for technical assistance. Refer to GM service bulletins for updated information.