2003 Pontiac Grand Prix GTFACTORY 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 variant/trim Section 1 (Engine Controls Self-Diagnostics - 3.1L Engine) Section 2 (Engine Controls Troubleshooting - No Codes - 3.1L) Section 3 (Engine Controls - Basic Diagnostic Procedures - 3.1L) Section 4 (Engine Controls - System Testing & Engine Component Tests - 3.1L) Section 5 (Engine Controls - Theory & Operation) Section 6 (Engine Mechanical - 3.1L) Different car Section 1 (Computer Relearn Procedures) Section 2 (Anti-Lock Brake System - 4WAL) Section 3 (Supplemental Inflatable Restraint System) Section 4 (Steering Wheel And Steering Column) Section 5 (Body Control Modules) Section 6 (Steering Column & Steering Column Switches) Section 7 (Analog Instrument Panels) Section 8 (Body Control Modules) Section 9 (Headlight Systems & Daytime Running Lights Systems - Wiring Diagrams) Section 10 (Theft Deterrent System) Section 11 (Analog Instrument Panels) Section 12 (Disc Brakes) Section 13 (Remote Keyless Entry System) Section 14 (HVAC Systems - Automatic) Section 15 (HVAC Systems - Automatic) Section 16 (Drive Axles) Section 17 (Computer Relearn Procedures) Section 18 (Power Door Lock System & Trunk Release) Section 19 (HVAC Systems - Manual) Section 20 (HVAC Systems - Manual) Section 21 (HVAC Systems - Manual) Section 22 (Front Suspension System) Section 23 (Rear Suspension System) Section 24 (System Wiring Diagrams - G1500) Section 25 (System Wiring Diagrams - G2500) Section 26 (System Wiring Diagrams - G3500) Section 27 (System Wiring Diagrams) Section 28 (System Wiring Diagrams) Section 29 (Rear Suspension System) Section 30 (Disc Brakes) Section 31 (Axle Shafts - Front) Section 32 (Automatic Transaxle Diagnosis - 4T65-E) Section 33 (Disc Brakes & Drum Brakes) Section 34 (Shift Interlock Systems) Section 35 (Disc Brakes & Drum Brakes) Section 36 (Shift Interlock Systems) Section 37 (Automatic Transmission Diagnosis - 4L80-E (Gasoline)) Section 38 (Engine Controls Self-Diagnostics - 4.3L) Section 39 (Electrical Component Locator) Section 40 (Electrical Component Locator) Section 41 (Electrical Component Locator) Section 42 (Engine Controls Self-Diagnostics - 5.0L & 5,7L) Section 43 (Automatic Transaxle Servicing) Section 44 (Automatic Transmission Servicing) Section 45 (Engine Control System Self-Diagnostics - 3.1L Engine) Section 46 (Automatic Transmission Servicing) Section 47 (Automatic Transmission Servicing) Section 48 (Engine Cooling System Specifications & Drive Belt Routing) Section 49 (Starting System) Section 50 (Charging System) Section 51 (Automatic Transmission Diagnosis - 4L60-E) Section 52 (Fuses & Circuit Breakers) Section 53 (Engine Controls Self-Diagnostics - 6.5L) Section 54 (Engine Control System Self-Diagnostics - 3.8L) Section 55 (Engine Control System Self-Diagnostics - 3.4L) Section 56 (Engine Controls - Self-Diagnostics - 3.5L) Section 57 (Engine Controls Self-Diagnostics - 2.2L CNG) Section 58 (Engine Controls Self-Diagnostics - 5.7L Corvette) Section 59 (Engine Controls - Self-Diagnostics) Section 60 (Engine Controls - Removal, Overhaul & Installation) Section 61 (Engine Controls - Self-Diagnostics - 4.0L) Section 62 (Computer Relearn Procedures) Section 63 (Engine Controls - Removal & Installation, Overhaul) Section 64 (Engine Control System - Basic Diagnostic Procedures) Section 65 (Engine Control System Troubleshooting - No Codes) Section 66 (Engine Controls Removal & Installation) Section 67 (Engine Performance System Removal, Overhaul & Installation - Bi-Fuel) Section 68 (Engine Controls - Removal, Overhaul & Installation - Gasoline) Section 69 (Engine Controls - Removal, Overhaul & Installation - 6.5L Diesel) Section 70 (Engine Control System Testing & Engine Component Testing) Section 71 (Supplemental Inflatable Restraint System) Section 72 (Supplemental Inflatable Restraint System) Section 73 (Supplemental Inflatable Restraint System) Section 74 (Air Bag Restraint Systems) Section 75 (Supplemental Inflatable Restraint System) Section 76 (Supplemental Inflatable Restraint System) Section 77 (System Wiring Diagrams) Section 78 (System Wiring Diagrams) Section 79 (System Wiring Diagrams - G1500) Section 80 (System Wiring Diagrams - G2500) Section 81 (System Wiring Diagrams - G3500) Section 82 (System Wiring Diagrams) Section 83 (System Wiring Diagrams) Section 84 (System Wiring Diagrams - G1500) Section 85 (System Wiring Diagrams - G2500) Section 86 (System Wiring Diagrams - G3500) Section 87 (System Wiring Diagrams) Section 88 (System Wiring Diagrams) Section 89 (Automatic Transmission Servicing) Section 90 (Engine Controls - Service & Adjustment Specifications) Section 91 (Engine Controls - Service & Adjustment Specifications) Section 92 (Engine Controls - Service & Adjustment Specifications) Section 93 (Engine Controls - Service & Adjustment Specifications) Section 94 (Engine Control System - Service & Adjustment Specifications) Section 95 (Automatic Transaxle Servicing) Section 96 (Automatic Transaxle Servicing) Section 97 (Heater Systems) Section 98 (Engine Control System - Theory & Operation) Section 99 (Engine Control System - Basic Diagnostic Procedures) Section 100 (Engine Control System - Self-Diagnostics) Section 101 (Automatic Transaxle Diagnosis - 4T65-E) Section 102 (Engine Control System - System & Component Testing) Section 103 (Engine Control System - Trouble Shooting - No Codes) Section 104 (Engine Control System - Removal & Installation) Section 105 (Automatic Transmission Removal & Installation) Section 106 (Engine Controls Self-Diagnostics - 2.2L) Section 107 (Engine Controls - Removal & Installation) Section 108 (Engine Controls - Removal & Installation) Section 109 (Engine Controls - System & Component Tests - 2.2L) Section 110 (Engine Controls - Trouble Shooting - No Codes - 2.2L) Section 111 (Engine Controls - Theory & Operation - 2.2L) Section 112 (Engine Controls - Basic Diagnostic Procedures - 2.2L) Section 113 (Engine Mechanical - 4.0L (On-Vehicle)) Section 114 (Charging System) Section 115 (Body Control Modules) Section 116 (Instrument Panel, Gauges & Console) Section 117 (Automatic Transaxle Removal & Installation) Section 118 (Wiper System And Washer System) Section 119 (Cruise Control System) Section 120 (Theft Deterrent System) Section 121 (Keyless Entry System) Section 122 (Door System, Mirror System & Window System) Section 123 (Body Control System) Section 124 (Power Sun Roof) Section 125 (Electrical Component Locator) Section 126 (Electrical Component Locator) Section 127 (Electrical Component Locator) Section 128 (System Wiring Diagrams) Section 129 (System Wiring Diagrams) Section 130 (System Wiring Diagrams) Section 131 (System Wiring Diagrams) Section 132 (System Wiring Diagrams) Section 133 (System Wiring Diagrams) Section 134 (System Wiring Diagrams) Section 135 (System Wiring Diagrams) Section 136 (System Wiring Diagrams) Section 137 (System Wiring Diagrams) Section 138 (System Wiring Diagrams) Section 139 (System Wiring Diagrams) Section 140 (System Wiring Diagrams) Section 141 (System Wiring Diagrams) Section 142 (System Wiring Diagrams) Section 143 (System Wiring Diagrams) Section 144 (System Wiring Diagrams) Section 145 (Cabin Air Filter) Section 146 (Engine Controls Self-Diagnostics - 2.2L Bi-Fuel) Section 147 (ENGINE CONTROLS - TROUBLE SHOOTING - NO CODES - 2.2L Bi-Fuel) Section 148 (Automatic Transmission Removal & Installation) Section 149 (Engine Controls - Removal & Installation, Overhaul) Section 150 (Engine Mechanical - 3.1L V6 - VIN (J) (On

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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.