1994 GMC K2500 Service and Repair Manual

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Factory-Grade Data

1994 GMC K2500 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

  • Sierra SLE Standard Cab Pickup 2-Door
  • Sierra SLT Cab & Chassis 2-Door
  • Sierra SLT Extended Cab Pickup 2-Door
  • Sierra SLE Extended Cab Pickup 2-Door
  • Sierra SL Standard Cab Pickup 2-Door
  • Sierra SL Extended Cab Pickup 2-Door
  • Sierra SL Cab & Chassis 2-Door
  • Sierra SLE Cab & Chassis 2-Door

Engines covered

  • 5.0L 305Cu. In. V8 GAS OHV Naturally Aspirated
  • 6.5L 395Cu. In. V8 DIESEL OHV Turbocharged
  • 7.4L 454Cu. In. V8 GAS OHV Naturally Aspirated
  • 4.3L 262Cu. In. V6 GAS OHV Naturally Aspirated
  • 5.7L 350Cu. In. V8 GAS OHV Naturally Aspirated
  • 6.5L 395Cu. In. V8 DIESEL 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

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Vehicle Safety Data

1994 GMC K2500 Recalls & Complaints

NHTSA #07E08800024/10/2007Component: EQUIPMENT

CERTAIN HONEYWELL FRAM RACING BRAND HP4 AND HP8 OIL FILTERS THAT WERE MANUFACTURED FROM MAY 25, 2006, THROUGH SEPTEMBER 14, 2007, AND SOLD FOR USE AS REPLACEMENT EQUIPMENT FOR VEHICLES LIST ABOVE. TH

Consequence

THIS CONDITION MAY CAUSE INADEQUATE SEALING AND LOSS OF ENGINE OIL, POSSIBLY RESULTING IN A FIRE.

Remedy

HONEYWELL WILL REPLACE THE AFFECTED OIL FILTERS FREE OF CHARGE. THE RECALL BEGAN DURING NOVEMBER 20

NHTSA #06E04300019/05/2006Component: FUEL SYSTEM, GASOLINE

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

Consequence

THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. I

Remedy

HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOB

TSB #10246631

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

20001117Component: SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGESCrash reported

WHILE TRAVELING AND WHEN MAKING A TURN, CLIP AND RING THAT HELD BRAKE PEDAL TO BRAKE ROD FELL OFF, CAUSING TOTAL LOSS OF BRAKES, CONSUMER FAILED TO MAKE THE CORNER, AND HIT A 5 TON FLATBED TRUCK.*AK

20140906Component: FUEL/PROPULSION SYSTEM

TRUCK STALLED, LOST POWER, STEERING BRAKES. HAPPEN ALSO TWO YEARS AGO AND HAD FUEL INJECTOR PUMP REPLACED. *TR

19990807Component: POWER TRAIN:AUTOMATIC TRANSMISSION

I'D LIKE TO KNOW ABOUT TRANSMISSION RECALLS IN 1994 GMC TRUCKS.( DOT NUMBER: TIRE SIZE: 265-75-R16 )

19990311Component: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC

THE WINDSHIELD WIPER SOMETIMES WON'T WORK WHEN ACTIVATED, THEN A FEW MINUTES LATER IT WILL SUDDENLY COME ON. THIS HAS HAPPENED SEVERAL TIMES WHILE DRIVING IN THE RAIN AND IT IS HARD TO SEE. THE DEALE

19990311Component: VISIBILITY:WINDSHIELD WIPER/WASHER

THE WINDSHIELD WIPER SOMETIMES WON'T WORK WHEN ACTIVATED, THEN A FEW MINUTES LATER IT WILL SUDDENLY COME ON. THIS HAS HAPPENED SEVERAL TIMES WHILE DRIVING IN THE RAIN AND IT IS HARD TO SEE. THE DEALE

Showing the 5 most serious of 8 complaints filed with NHTSA.

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