1985 Chevrolet C30 Service and Repair Manual

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Covers all 1985 C30 trims — Scottsdale Standard Cab Pickup 2-Door, Silverado Cab & Chassis 4-Door, Silverado Crew Cab Pickup 4-Door +5 more ·
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1985 Chevrolet C30 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.

Designed for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and reference wiring diagrams and system sections quickly while you work.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Wiring diagrams and electrical sections
  • Powertrain, brakes, steering, suspension, HVAC and more

Trims covered

  • Scottsdale Standard Cab Pickup 2-Door
  • Silverado Cab & Chassis 4-Door
  • Silverado Crew Cab Pickup 4-Door
  • Silverado Cab & Chassis 2-Door
  • Scottsdale Cab & Chassis 2-Door
  • Custom Standard Cab Pickup 2-Door
  • Custom Crew Cab Pickup 4-Door
  • Silverado Standard Cab Pickup 2-Door
  • Custom Cab & Chassis 2-Door
  • Custom Cab & Chassis 4-Door
  • Scottsdale Cab & Chassis 4-Door
  • Scottsdale Crew Cab Pickup 4-Door

Engines covered

  • 7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated
  • 6.2L 379Cu. In. V8 DIESEL OHV Naturally Aspirated
  • 4.8L 292Cu. In. l6 GAS OHV Naturally Aspirated
  • 5.7L 350Cu. 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 #85V15600026/11/1985Component: WHEELS:RIM

THE WHEEL MAY DEVELOP CRACKS BETWEEN THE DISC AND RIM. CONSEQUENCE OF DEFECT: IF THIS OCCURS AND

Remedy

REPLACE WHEELS HAVING THE SUSPECTED MANUFACTURING CODE NUMBER.

NHTSA #84V13600026/10/1984Component: WHEELS:HUBCAP/COVER

IN SOME 16 X 6 DISC WHEELS A MANUFACTURING DEFECT MAY CAUSE THE WHEELS TO CRACK IN THE DROP CENTER PORTION OF THE RIM. IF THE CRACK WERE TO OCCUR ON A WHEEL WITH A TUBE TYPE TIRE M

Remedy

THE DEALER WILL INSPECT EACH WHEEL AND REPLACE IT IF NECESSARY, WITHOUT CHARGE.

NHTSA #87V00200020/01/1987Component: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

TRUCKS FAILED TO COMPLY WITH REQUIREMENTS OF FMVSS 301, FUEL SYSTEM INTEGRITY, DURING A 30 MPH FRONTAL BARRIER TEST.

Consequence

GREATER THAN ACCEPTABLE FUEL SPILLAGE DURING AND AFTER ACOLLISION COULD RESULT IN A FIRE.

Remedy

INSTALL AN ADDITIONAL SHIELD TO THE FRONT OF THE ORIGINAL SHIELD TO PROTECT THE FUEL TANK.

No service bulletins No technical service bulletins on file with NHTSA for the 1985 Chevrolet C30.
No complaints filed No consumer complaints on file with NHTSA for the 1985 Chevrolet C30.

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