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2003 GMC Sierra 2500 HD Service and Repair Manual
Regular price
$29.99 USD
Unit price
Covers all 2003 Sierra 2500 HD trims — Base Standard Cab Pickup 2-Door, SLT Crew Cab Pickup 4-Door, Base Extended Cab Pickup 4-Door +6 more ·
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Complete repair procedures
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$29.99
2003 GMC Sierra 2500 HD Service and Repair Manual
Regular price
$29.99 USD
Unit price
2003 GMC Sierra 2500 HD 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
- SLT Crew Cab Pickup 4-Door
- Base Extended Cab Pickup 4-Door
- SLE Crew Cab Pickup 4-Door
- Base Crew Cab Pickup 4-Door
- SLT Extended Cab Pickup 4-Door
- SLE Extended Cab Pickup 4-Door
- WT Standard Cab Pickup 2-Door
- SLE Standard Cab Pickup 2-Door
Engines covered
- 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged
- 6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated
- 8.1L 496Cu. In. V8 GAS OHV Naturally Aspirated
- 6.0L 5967CC 364Cu. In. V8 CNG 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
No active recalls
The 2003 GMC Sierra 2500 HD has no recalls on file with NHTSA.
This service bulletin explains how to measure for oil consumption and possible reasons for loss of oil.
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
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
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
This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or misfire, MIL with DTCs, and explains how Top Tier fuels should
This bulletin provides information for use on a Product Assistance Claim (PAC), which is formerly known as a Product Allegation Resolution (PAR) claim.
This service bulletin provides information for dealers/technicians on Service Programming System (SPS) Error Codes E4398, E4399, E4401, E4403, M4404, M4413, M6954, M6955, E4414, E4423, E4491, E4492, or E6961 and resolution information.
This Warranty Administration bulletin provides retail and wholesale service personnel with the policies/procedures and the warranty transaction submission procedures that support the Personal Property Damage process.
Showing the 8 most recent of 73 technical service bulletins on file with NHTSA.
No complaints filed
No consumer complaints on file with NHTSA for the 2003 GMC Sierra 2500 HD.
Other Years of the GMC Sierra 2500 HD
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