Repair manual
GMC Sierra 2500 Repair Manual
Step-by-step repair and maintenance instructions for the GMC Sierra 2500 (2012–2012): removal, installation, adjustment, diagnostics and parameter checks with illustrations.
79sections
531articles
ENManual language
- General information
- Circuit/System Description
- Diagnostic Aids
- Description
- Conditions for Running the Fuel Injector Correction Reset
- Reset Procedure
- Before Programming A Control Module
- Circuit/System Verification
- Circuit/System Testing
- Conditions for Running
- Reference Information
- DPF Service Regeneration
- Diesel Particulate Filter (DPF) Regeneration Enable
- Removal Procedure
- Installation Procedure
- Metal Collar Quick Connect Fitting Service
- Fuel System Priming
- Fuel Filter Life Reset
- Water-in-Fuel Draining
- Fuel Tank Draining (Gasoline)
- Fuel Tank Draining (Emission Reduction Fluid)
- Fuel Tank Fuel Pump Module Replacement
- Fuel Hose Replacement - Fuel Injection Pump to Fuel Feed Block
- Fuel System Cleaning
- Cleaning Water from the Fuel System
- Cleaning Gasoline from the Fuel System
- Fuel Feed and Return Pipe Purging
- Fuel Injector Replacement (Left Side)
- Fuel Injector Cleaning and Inspection
- Injector Bore Cleaning
- Fuel Injector Replacement (Right Side)
- Indirect Fuel Injector Replacement
- Cleaning Procedure
- Disassembly Procedure
- Emission Reduction Fluid Tank Reservoir Replacement
- Assembly Procedure
- Turbocharger Learn
- Learn Procedure With the Tech 2
- Fastener Tightening Specifications
- Axle Preload and Backlash Specifications
- Adhesives, Fluids, Lubricants, and Sealers
- Noise Diagnosis
- Classifying the Symptom
- Visual/Physical Inspection
- Symptoms List
- Gear Noise
- Bearing Noise
- Front Wheel Bearing Noise
- Knock at Low Speeds
- Backlash Clunk
- Noisy in Drive
- Noisy When Coasting
- Intermittent Noise
- Constant Noise
- Noisy on Turns
- Straight Roller Bearing Diagnosis
- Tapered Roller Bearing Diagnosis
- Four-Wheel Drive Does Not Engage
- Four-Wheel Drive Does Not Disengage
- Front Axle Lubricant Leak Diagnosis
- Determining the Cause
- Removal Procedure
- Installation Procedure
- Special Tools
- Tools Required
- Front Axle Lubricant Level Inspection (9.25 Inch Axle)
- Inner Axle Shaft Shim Adjustment (8.6 9.25 Inch Axles)
- Alternate Adjustment Method
- Inner Axle Shaft Shim Adjustment (9.25 Inch HD axle)
- Inspection Procedure
- Disassembly Procedure
- Front Differential Case Disassemble (9.25 Inch Axle)
- Front Differential Case Disassemble (9.25 Inch HD Axle)
- Front Differential Case Disassemble (8.25 Inch Axle)
- Differential Case Bearings Inspection
- Differential Case and Gears Inspection
- Pinion and Ring Gear Inspection
- Thrust Washers, Shims, and Adjuster Sleeves Inspection
- Front Differential Case Assemble (9.25 Inch Axle)
- Front Differential Case Assemble (9.25 Inch HD Axle)
- Front Differential Case Assemble (8.25 Inch Axle)
- Front Differential Drive Pinion Gear Bearing Cup Installation (9.25 Inch HD Axle)
- Front Differential Drive Pinion Gear Bearing Cup Installation (8.25 Inch Axle)
- Front Differential Drive Pinion Gear Bearing Cup Installation (8.25/9.25 Inch Axles)
- Pinion Depth Adjustment (8.6, 9.25 Inch Axle)
- Pinion Depth Adjustment (9.25 Inch HD Axle)
- Differential Carrier Assembly Assemble (9.25 Inch Axle)
- Differential Carrier Assembly Assemble (8.25 Inch Axle Lock Ring Style)
- Backlash Inspection and Adjustment
- Differential Carrier Assembly Final Assembly (9.25 Inch HD Axle)
- Differential Carrier Assembly Final Assembly (8.25 Inch Axle Lock Ring Type)
- Differential Carrier Assembly Final Assembly (8.25 Inch Axle S4WD and 9.25 Inch Axle Lock Tab)
- Gear Tooth Contact Pattern Inspection
- Adjustments Affecting Tooth Contact
- Testing Procedure
- Selectable Four Wheel Drive (S4WD) Front Axle Description and Operation
- Full-Time Four Wheel Drive (F4WD) Front Axle Description and Operation
- Fastener Tightening Specifications
- Diagnostic Code Index
- Diagnostic Instructions
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- Actions Taken When the DTC Sets
- Diagnostic Aids
- Symptoms - Lighting
- Visual/Physical Inspection
- Intermittent
- Symptom List
- Brake Pedal Position Sensor Calibration
- Calibration Criteria
- Calibration Procedure
- Brake Pedal Position Sensor Replacement (Without JF4 - Pedals - Adjustable, Power)
- Removal Procedure
- Installation Procedure
- Brake Pedal Position Sensor Replacement (With JF4 - Pedals - Adjustable, Power)
- Fog Lamp Switch Replacement (with RPO SLT)
- Fog Lamp Switch Replacement (without RPO SLT)
- Headlamp Replacement (GMC)
- Headlamp Replacement (HD Chevrolet Diesel)
- Headlamp Aiming (Chevrolet/GMC)
- Screen Method for Headlamp Aiming (Visual Aim)
- Headlamp Aiming Procedure
- Fog Lamp Aiming
- Preparation Procedure
- Aiming Procedure
- Exterior Lamps
- Interior Lamps
- Courtesy/Illuminated Entry Lamps
- Door Sill Illumination
- Keyless Entry Interior Illumination
- Vanity Lamps
- Reading Lamps
- Battery Rundown Protection/Inadvertent Power
- Interior Lamps Dimming
- Approximate Fluid Capacities
- Fastener Tightening Specifications
- Adhesives, Fluids, Lubricants, and Sealers
- Diagnostic Code Index
- Diagnostic Instructions
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- Symptoms - Transfer Case
- Visual/Physical Inspection
- Intermittent
- Symptom List
- Front Axle Actuator and Axle Testing
- Instrument Panel Cluster (IPC) and Engine Control Module (ECM) Functionality
- Transfer Case Popping Noise
- Transfer Case Banging Noise
- Transfer Case Whine or Rumble Noise
- Transfer Case Growl or Grinding Noise
- Transfer Case Clunk in 2HI Only
- Transfer Case Clunk in 4HI
- Transfer Case Clunk in 4LO
- Transfer Case Will Not Shift
- Transfer Case Jumps Out of Gear
- Transfer Case Leak Diagnosis
- Removal Procedure
- Installation Procedure
- Drain Plug Replacement
- Front Output Shaft Seal Replacement
- Transfer Case Description and Operation
- NEUTRAL Mode Power Flow
- New Product Information
- Production Assembly Breakpoints
- Magna Transfer Case Bar Code Label
- Special Tools
- Approximate Fluid Capacities
- Fastener Tightening Specifications
- Adhesives, Fluids, Lubricants, and Sealers
- Diagnostic Code Index
- Diagnostic Instructions
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- Symptoms - Transfer Case
- Intermittent
- Symptom List
- Using a Scan Tool
- Using The Transfer Case Shift Control Switch
- Transfer Case Popping Noise
- Transfer Case Banging Noise
- Transfer Case Whine or Rumble Noise
- Transfer Case Growl or Grinding Noise
- Transfer Case Clunk in 2HI Only
- Transfer Case Clunk in 4HI
- Transfer Case Clunk in 4LO
- Transfer Case Will Not Shift
- Transfer Case Jumps Out of Gear
- Transfer Case Leak Diagnosis
- Drain Plug Replacement
- Removal Procedure
- Installation Procedure
- Front Output Shaft Seal Replacement
- NEUTRAL Mode Power Flow
- Service 4 Wheel Drive Message
- Vehicle Speed Sensor (VSS)
- New Product Information
- Production Assembly Breakpoints
- Magna Transfer Case Bar Code Label
- Special Tools
- Approximate Fluid Capacities
- Fastener Tightening Specifications
- Adhesives, Fluids, Lubricants, and Sealers
- Diagnostic Code Index
- Diagnostic Instructions
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- Typical Scan Tool Data
- Symptoms - Transfer Case
- Visual/Physical Inspection
- Intermittent
- Symptom List
- Using a Scan Tool
- Using The Transfer Case Shift Control Switch
- Transfer Case Popping Noise
- Transfer Case Banging Noise
- Transfer Case Whine or Rumble Noise
- Transfer Case Growl or Grinding Noise
- Transfer Case Grating Noise
- Transfer Case Clunk in 2HI Only
- Transfer Case Clunk in 4HI
- Transfer Case Clunk in 4LO
- Transfer Case Clunk During Acceleration and Deceleration
- Transfer Case Shudder or Binding
- Transfer Case Will Not Shift
- Transfer Case Jumps Out of Gear
- Transfer Case Leak Diagnosis
- Drain Plug Replacement
- Removal Procedure
- Installation Procedure
- Front Output Shaft Seal Replacement
- Transfer Case Description and Operation
- NEUTRAL Mode Power Flow
- Service 4 Wheel Drive Message
- Transfer Case Two/Four Wheel Drive Incremental Sensor
- Transfer Case Motor Lock
- Vehicle Speed Sensor (VSS)
- New Product Information
- Service Parts Release Usage Change - NQH/NPO Control Actuator Levers
- Production Assembly Breakpoints
- Magna Transfer Case Bar Code Label
- Special Tools