2003 Chevrolet Silverado 2500 Service and Repair Manual

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Covers all 2003 Silverado 2500 trims — Base Standard Cab Pickup 2-Door, LS Extended Cab Pickup 4-Door, LT Extended Cab Pickup 4-Door +3 more ·
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2003 Chevrolet Silverado 2500 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

  • Base Standard Cab Pickup 2-Door
  • LS Extended Cab Pickup 4-Door
  • LT Extended Cab Pickup 4-Door
  • Base Extended Cab Pickup 4-Door
  • LS Standard Cab Pickup 2-Door
  • 400 SS Standard Cab Pickup 2-Door

Engines covered

  • 6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated
  • 5.3L 5328CC 325Cu. 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 #06E01000001/02/2006Component: STEERING

CERTAIN FABTECH AFTERMARKET REPLACEMENT PITMAN ARMS, P/NOS. FTS71000 AND FTS71001, INSTALLED FOR USE ON CERTAIN 2001-2006 GM C/K 2500 PICK UP TRUCKS AND SPORT UTILITY VEHICLES. TH

Consequence

LOSS OF STEERING CONTROL COULD LEAD TO A VEHICLE CRASH WITH POTENTIAL INJURY OR DEATH.

Remedy

FABTECH WILL NOTIFY OWNERS AND REPLACE THE PITMAN AND IDLER ARMS FREE OF CHARGE. THE RECA

TSB #11020816

This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.

TSB #11017252

This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.

TSB #11014455

This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the

TSB #11012907

This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.

TSB #11010544

This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.

TSB #11007208

This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed fo

TSB #11006621

Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected mo

TSB #11006421

GM is receiving damaged (cracked or broken) transmission cores returned to the reman facilities. The damage is being caused either in the removal process by the technician, or inadequate packaging or shipping. This bulletin advises the deal

Showing the 8 most recent of 110 technical service bulletins on file with NHTSA.

20111101Component: SEAT BELTSCrash reported3 injured

TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT WHILE DRIVING 45 MPH, THE VEHICLE WAS INVOLVED IN A HEAD ON CRASH AND THE AIR BAGS DID NOT DEPLOY.

20111101Component: AIR BAGSCrash reported3 injured

TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT WHILE DRIVING 45 MPH, THE VEHICLE WAS INVOLVED IN A HEAD ON CRASH AND THE AIR BAGS DID NOT DEPLOY.

20140807Component: AIR BAGSCrash reported2 injured

TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 2500 HD. THE CONTACT STATED THAT WHILE DRIVING T 30 MPH, THE CONTACT CRASHED INTO ANOTHER VEHICLE AND THE AIR BAGS FAILED TO DEPLOY

20160502Component: SERVICE BRAKESCrash reported1 injured

TL* THE CONTACT OWNS A 2003 CHEVROLET SILVERADO 2500. WHILE DRIVING 15 MPH, THE ABS LIGHT ILLUMINATED. THE CONTACT DEPRESSED THE BRAKE PEDAL, WHICH FAILED TO STOP THE VEHICLE. AS A

Showing the 4 most serious of 561 complaints filed with NHTSA.

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