2004 Hummer H2 4D Utility PickupFACTORY OEM SERVICE PROCEDURE

External Pages

's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle. Different car Section 1 (Air Bag And Supplemental Restraint System (SRS) Component Inspection & Replacement Tables) Section 2 (Supplemental Inflatable Restraint System Component Inspection & Replacement Tables.) Section 3 (HVAC Systems - Automatic) Section 4 (Drive Axles) Section 5 (Front Suspension System) Section 6 (Rear Suspension System) Section 7 (Disc Brakes) Section 8 (Shift Interlock Systems) Section 9 (Engine Controls - Self-Diagnostics - 8.1L) Section 10 (Automatic Transmission Servicing) Section 11 (Engine Controls - Self-Diagnostics - 3.5L) Section 12 (Engine Controls Self-Diagnostics - 5.7L Corvette) Section 13 (Engine Controls - Removal, Overhaul & Installation) Section 14 (Engine Controls - Self-Diagnostics - 4.0L) Section 15 (Computer Relearn Procedures) Section 16 (Engine Control System Troubleshooting - No Codes) Section 17 (Supplemental Inflatable Restraint System) Section 18 (Supplemental Inflatable Restraint System) Section 19 (Supplemental Inflatable Restraint System) Section 20 (System Wiring Diagrams) Section 21 (Automatic Transmission Servicing) Section 22 (Engine Controls - Service & Adjustment Specifications) Section 23 (Engine Controls - Service & Adjustment Specifications - 4.3L) Section 24 (Engine Controls - Service & Adjustment Specifications - 5.3L) Section 25 (Engine Controls - Service & Adjustment Specifications - 4.8L) Section 26 (Engine Controls - Service & Adjustment Specifications) Section 27 (Engine Controls - Service & Adjustment Specifications - 6.0L) Section 28 (Engine Controls - Service & Adjustment Specifications) Section 29 (Engine Controls - Service & Adjustment Specifications) Section 30 (Engine Control System - Service & Adjustment Specifications) Section 31 (Automatic Transaxle Servicing) Section 32 (ENGINE CONTROLS - SERVICE & ADJUSTMENT SPECIFICATIONS - 6.6L Diesel) Section 33 (Engine Controls - Service & Adjustment Specifications - 8.1L) Section 34 (Engine Control System - On-Vehicle Adjustments) Section 35 (Engine Controls - On-Vehicle Adjustments - Trucks (Except Tracker)) Section 36 (Engine Control System - Theory & Operation) Section 37 (Engine Controls - Theory & Operation - 4.3L) Section 38 (Engine Controls - Theory & Operation - Gasoline) Section 39 (Engine Control System - Basic Diagnostic Procedures) Section 40 (Engine Control System - Self-Diagnostics) Section 41 (Automatic Transmission - ALLISON - Diagnosis) Section 42 (ENGINE CONTROLS - THEORY & OPERATION - 6.6L Diesel) Section 43 (Engine Controls - Theory & Operation - 8.1L) Section 44 (Engine Controls - Basic Diagnostic Procedures - 4.3L) Section 45 (Engine Controls - Basic Diagnostic Procedures - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline Engines) Section 46 (Engine Control System - System & Component Testing) Section 47 (ENGINE CONTROLS - BASIC DIAGNOSTIC PROCEDURES - 6.0L W/BiFuel & CNG ENGINES) Section 48 (Engine Controls - Basic Diagnostic Procedures - 6.6L Diesel) Section 49 (Engine Controls - Basic Diagnostic Procedures - 8.1L) Section 50 (Engine Controls - Trouble Shooting - No Codes - 4.3L) Section 51 (Engine Controls - Trouble Shooting - No Codes - 4.8L, 5.3L & 6.0L) Section 52 (ENGINE CONTROLS - TROUBLE SHOOTING - NO CODES - 6.0L W/BiFuel & CNG) Section 53 (Engine Controls - Trouble Shooting - No Codes - 6.6L) Section 54 (Engine Controls - Trouble Shooting - No Codes - 8.1L) Section 55 (Engine Control System - Trouble Shooting - No Codes) Section 56 (Engine Controls - System & Component Testing - 4.3) Section 57 (Engine Controls - System & Component Testing - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline) Section 58 (Supplemental Inflatable Restraint System Deactivation Procedures) Section 59 (Engine Control System - Removal & Installation) Section 60 (ENGINE CONTROLS - SYSTEM & COMPONENT TESTING - 6.0L W/BiFuel & CNG) Section 61 (Engine Controls - System & Component Testing - 6.6L) Section 62 (Automatic Transmission Removal & Installation) Section 63 (Engine Controls - System & Component Testing - 8.1L) Section 64 (Engine Controls Self-Diagnostics - 2.2L) Section 65 (Engine Controls - Removal & Installation) Section 66 (Engine Controls - System & Component Tests - 2.2L) Section 67 (Engine Controls - Trouble Shooting - No Codes - 2.2L) Section 68 (Engine Controls - Theory & Operation - 2.2L) Section 69 (Engine Controls - Basic Diagnostic Procedures - 2.2L) Section 70 (Engine Mechanical - 4.0L (On-Vehicle)) Section 71 (Body Control Modules) Section 72 (Automatic Transmission - 4L60-E/4L65-E - Servicing) Section 73 (Electrical Component Locator) Section 74 (Electrical Component Locator) Section 75 (Electrical Component Locator) Section 76 (Electrical Component Locator) Section 77 (Automatic Transmission Servicing - ALLISON LCT 1000) Section 78 (System Wiring Diagrams - G1500) Section 79 (System Wiring Diagrams - G2500) Section 80 (System Wiring Diagrams - G3500) Section 81 (System Wiring Diagrams - H1500) Section 82 (System Wiring Diagrams - H2500) Section 83 (System Wiring Diagrams) Section 84 (System Wiring Diagrams) Section 85 (System Wiring Diagrams) Section 86 (System Wiring Diagrams) Section 87 (System Wiring Diagrams - G1500) Section 88 (System Wiring Diagrams - G2500) Section 89 (System Wiring Diagrams - G3500) Section 90 (System Wiring Diagrams - H1500) Section 91 (System Wiring Diagrams - H2500) Section 92 (System Wiring Diagrams) Section 93 (System Wiring Diagrams) Section 94 (System Wiring Diagrams) Section 95 (System Wiring Diagrams) Section 96 (System Wiring Diagrams) Section 97 (System Wiring Diagrams) Section 98 (System Wiring Diagrams) Section 99 (System Wiring Diagrams - 1500) Section 100 (System Wiring Diagrams - 1500 Hd) Section 101 (System Wiring Diagrams - 2500) Section 102 (System Wiring Diagrams - 2500 Hd) Section 103 (System Wiring Diagrams - 3500) Section 104 (System Wiring Diagrams) Section 105 (System Wiring Diagrams - 1500) Section 106 (System Wiring Diagrams - 1500 Hd) Section 107 (System Wiring Diagrams - 2500) Section 108 (System Wiring Diagrams - 2500 Hd) Section 109 (System Wiring Diagrams - 3500) Section 110 (System Wiring Diagrams) Section 111 (System Wiring Diagrams) Section 112 (System Wiring Diagrams) Section 113 (System Wiring Diagrams) Section 114 (System Wiring Diagrams) Section 115 (System Wiring Diagrams) Section 116 (System Wiring Diagrams) Section 117 (System Wiring Diagrams) Section 118 (Cabin Air Filter) Section 119 (Engine Controls Self-Diagnostics - 2.2L Bi-Fuel) Section 120 (ENGINE CONTROLS - TROUBLE SHOOTING - NO CODES - 2.2L Bi-Fuel) Section 121 (Automatic Transmission - 4L60-E/4L65-E - Removal & Installation) Section 122 (Automatic Transmission - 4L80-E - Removal & Installation) Section 123 (Engine Controls - Removal & Installation, Overhaul) Section 124 (Cruise Control System) Section 125 (Engine Controls - Removal & Installation) Section 126 (Engine Controls - Service & Adjustment Specifications) Section 127 (Engine Controls - Removal & Installation) Section 128 (HVAC Systems - General Servicing) Section 129 (Wheel Alignment Specifications) Section 130 (Engine Controls Self-Diagnostics) Section 131 (ENGINE CONTROLS - SELF-DIAGNOSTICS - 4.8L, 5.3L & 6.0L - Flex Fuel & Gasoline) Section 132 (Engine Controls - Removal & Installation - Flex Fuel & Gasoline) Section 133 (Engine Control System - PID Values, Pcm Connector Views & Terminal Identification) Section 134 (Engine Controls - PID Values, Pcm Connector Views And Terminal Identification) Section 135 (Engine

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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