2008 Hummer H2 4D Utility PickupFACTORY OEM SERVICE PROCEDURE

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's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle. Different car Section 1 (Cautions And Notices) Section 2 (Floor Coverings And HEADLININGS) Section 3 (Warnings And Cautions) Section 4 (Seat Hardware, Trim, And Upholstery) Section 5 (Instrument Panel And Console Trim) Section 6 (Interior Trim And Paneling) Section 7 (Tires And Wheels) Section 8 (Lighting) Section 9 (Exterior Trim) Section 10 (Bolted Exterior Body Panels And Closures) Section 11 (Luggage Rack And Roof Trim) Section 12 (Wipers And Washers) Section 13 (Supplemental Inflatable Restraints) Section 14 (Steering Wheel And Column) Section 15 (Displays And Gages) Section 16 (Cellular, Entertainment, And Navigation) Section 17 (HVAC - Automatic) Section 18 (Transfer Case - BW 4484) Section 19 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) Section 20 (Vehicle Access) Section 21 (Seat Belts) Section 22 (Fixed And MOVEABLE Windows) Section 23 (Bumpers And Fascias) Section 24 (Battery, Charging System And Starting System) Section 25 (Frame And Underbody) Section 26 (General Information) Section 27 (Mirrors) Section 28 (Front Drive Axle) Section 29 (Engine Controls And Fuel - 6.0L - Introduction (2 Of 2)) Section 30 (Vehicle Diagnostic Information) Section 31 (Wiring Systems And Power Management) Section 32 (Programming And Setup) Section 33 (Seat Heating And Cooling) Section 34 (Horns) Section 35 (Data Communications) Section 36 (Theft Deterrent) Section 37 (Remote Functions) Section 38 (Park Brake) Section 39 (Heating, Ventilation, And Air Conditioning) Section 40 (Antilock Brake System With TCS) Section 41 (Hydraulic Brakes) Section 42 (Disc Brakes) Section 43 (Front Suspension) Section 44 (Rear Drive Axle) Section 45 (Suspension General Diagnosis) Section 46 (Power Steering) Section 47 (Wheel Drive Shafts) Section 48 (Air Suspension) Section 49 (Power Seats) Section 50 (Immobilizer) Section 51 (Engine Controls And Fuel - 6.0L - Troubleshooting) Section 52 (Secondary And Configurable Customer Controls) Section 53 (Engine Controls And Fuel - 6.0L - DTC P0030 To DTC P0140) Section 54 (Engine Controls And Fuel - 6.0L - DTC P0141 To DTC P0454) Section 55 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P0218 To DTC P2771) Section 56 (Engine Controls And Fuel - 6.0L - DTC P0455 To DTC U0107) Section 57 (Cruise Control) Section 58 (Engine Cooling) Section 59 (Vibration Symptoms Diagnosis And Correction) Section 60 (Propeller Shaft) Section 61 (Engine Exhaust) Section 62 (Engine Mechanical) Section 63 (Sunroof) Section 64 (Object Detection) Section 65 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Service, Diagnosis & Troubleshooting) Section 66 (Shift Lock Control) Section 67 (Maintenance And Lubrication) Section 68 (Rear Suspension) Section 69 (Engine Controls And Fuel - 6.0L - Introduction (1 Of 2)) Section 70 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (1 Of 2)) Section 71 (Power Outlets) Section 72 (Steering Linkage) Section 73 (Wheel Alignment) Section 74 (Floor Coverings & Headliners) Section 75 (Seat Hardware, Seat Trim, And Upholstery) Section 76 (Instrument Panel Trim And Console Trim) Section 77 (Seat Belt System) Section 78 (Interior Trim And Paneling) Section 79 (Supplemental Inflatable Restraint System) Section 80 (Sunroof System) Section 81 (Cellular System, Entertainment System, And Navigation System) Section 82 (Lighting Systems) Section 83 (Exterior Trim) Section 84 (Warnings And Cautions) Section 85 (Wiper System & Washer System) Section 86 (Bolted Exterior Body Panels And Closures) Section 87 (Bumper System & Fascia) Section 88 (General Information) Section 89 (Frame And Underbody) Section 90 (Object Detection System) Section 91 (Parking Brake System) Section 92 (Heating, Ventilation, And Air Conditioning) Section 93 (Instrument Panel System Displays And Gauges) Section 94 (HVAC System - Manual) Section 95 (Steering Wheel & Steering Column) Section 96 (Fixed & MOVEABLE Window Systems) Section 97 (Door Lock Systems & Door Handles) Section 98 (Engine Cooling System) Section 99 (Wiring Systems And Power Management - Introduction) Section 100 (Engine Control System & Fuel - 4.8L, 5.3L, 6.0L And 6.2L - Introduction (2 Of 2)) Section 101 (Battery, Charging System And Starting System) Section 102 (Mirror System) Section 103 (Front Drive Axle) Section 104 (Tires And Wheels) Section 105 (Programming And Setup - All Systems) Section 106 (Adjustable Pedal System) Section 107 (Vehicle Diagnostic Information) Section 108 (Wiring Systems And Power Management - Troubleshooting & Diagnosis) Section 109 (Component Locations & Power, Ground And Splice Pack Connector End Views) Section 110 (Data Communication System) Section 111 (Horn System) Section 112 (Keyless Entry System And Remote Functions) Section 113 (Seat Heating System & Seat Cooling System) Section 114 (Maintenance And Lubrication) Section 115 (Antilock Brake System, Traction Control System & Stability Control System) Section 116 (Engine Control System & Fuel - 4.8L, 5.3L, 6.0L And 6.2L - Introduction (1 Of 2)) Section 117 (Engine Control System & Fuel - 4.8L, 5.3L, 6.0L And 6.2L - Diagnosis & Troubleshooting) Section 118 (Hydraulic Brake System) Section 119 (Tire Pressure Monitoring System) Section 120 (Disc Brake System) Section 121 (Rear Drive Axle) Section 122 (Front Suspension System) Section 123 (Suspension General Diagnosis) Section 124 (Power Steering System) Section 125 (Wheel Drive Shafts) Section 126 (Engine Mechanical - 4.8L, 5.3L, 6.0L And 6.2L (2 Of 5)) Section 127 (HVAC System - Automatic) Section 128 (Suspension Control System - Suspension Damping) Section 129 (Power Seat System) Section 130 (Theft Deterrent System) Section 131 (Transfer Case - NVG 246-NP8) Section 132 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Introduction (2 Of 2)) Section 133 (Automatic Transmission - 4L80-E/4L85-E - Introduction (2 Of 2)) Section 134 (Automatic Transmission - 6L50/6L80/6L90 - Introduction (2 Of 2)) Section 135 (Immobilizer System) Section 136 (Wiring Systems And Power Management - DTC B1370 To DTC B1475) Section 137 (Cruise Control System) Section 138 (Shift Interlock System) Section 139 (Secondary And Configurable Customer Controls) Section 140 (Suspension Control System - Suspension Leveling) Section 141 (Engine Control System & Fuel - 4.8L, 5.3L, 6.0L And 6.2L - DTC P0010 To DTC P0333) Section 142 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P0218 To DTC P0961) Section 143 (Automatic Transmission - 4L80-E/4L85-E - DTC P0218 To DTC P0976) Section 144 (Automatic Transmission - 6L50/6L80/6L90 - DTC P0218 To DTC P0977) Section 145 (Engine Control System & Fuel - 4.8L, 5.3L, 6.0L And 6.2L - DTC P0335 To DTC P3449) Section 146 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - DTC P0973 To DTC P2771) Section 147 (Automatic Transmission - 4L80-E/4L85-E - DTC P0977 To DTC P2764) Section 148 (Automatic Transmission - 6L50/6L80/6L90 - DTC P0989 To DTC P2764) Section 149 (Vibration Symptoms Diagnosis And Correction) Section 150 (Propeller Shaft And Universal Joints) Section 151 (Engine Exhaust System) Section 152 (Engine Mechanical - 4.8L, 5.3L, 6.0L And 6.2L (1 Of 5)) Section 153 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Service, Diagnosis & Troubleshooting) Section 154 (Automatic Transmission - 4L80-E/4L85-E - Service, Diagnosis & Troubleshooting) Section 155 (Automatic Transmission - 6L50/6L80/6L90 - Service, Diagnosis & Troubleshooting) Section 156 (Transfer Case - BW 4485-Nr3 AWD) Section 157 (Steeri

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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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