1994 GMC B7 Service and Repair Manual

Regular price $29.99 USD
Covers all 1994 B7 trims — B7T042, B7T042 Bus (School) - Cab Forward ·
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1994 GMC B7 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

  • B7T042
  • B7T042 Bus (School) - Cab Forward

Engines covered

  • 6.0L 366Cu. In. V8 GAS OHV Naturally Aspirated
  • 7.0L 6998CC 427Cu. In. V8 GAS OHV Naturally Aspirated
  • 7.0L 7011CC 427Cu. In. V8 GAS OHV Naturally Aspirated
  • 6.6L 403Cu. In. l6 DIESEL OHV Turbocharged

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
No active recalls The 1994 GMC B7 has no recalls on file with NHTSA.
TSB #10246631

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

TSB #10004297

EFFECT OF STEERING BOX LIMITER ADJUSTMENT ON TURNING RADIUS AND POSSIBILITY OF POWER STEERING SYSTEM DAMAGE DUE TO IMPROPER ADJUSTMENT. VARIOUS 1990-2004 MODELS. *TT

TSB #10000563

RELEASE OF NEW REAR BRAKE PIPE SHIELDS. *TT

TSB #617668

INFORMATION ON FUEL TANK SHIELDS. *TT

TSB #6092588

EXPERIENCING NOISY RELEASE BEARING, SLIPPING CLUTCH OR INOERATIVE CLUTCH. *TT

TSB #6089156

CONCERNS WITH INTERMITTENT MULTIFUNCTION ALARM ACTIVATION. *TT

TSB #6088982

INFORMATION REGARDING DAYTIME RUNNING LIGHTS (DRL) FLICKER CONDITION. *TT

TSB #600270

VEHICLES WITH 6.0L AND 7.0L ENGINES (VINS P, M - RPOS LS0, LR0) MAY EXHIBIT ENGINE EXHAUST NOISE WHICH IS LOUDEST DURING COLD ENGINE OPERATION. *YC

No complaints filed No consumer complaints on file with NHTSA for the 1994 GMC B7.

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