1993 GMC Value Van 5.7 K, _NA_, Gas/CNGFACTORY OEM SERVICE PROCEDURE

External Pages

1993 GMC Value Van 5.7 K, _NA_, Gas/CNG Service Manual /CNG >> Repair and Diagnosis >> External Pages External Pages These are pages that do not belong to the exact selected vehicle (1993 GMC Value Van 4.3 Z, Automatic), but are still accessible from a link in your vehicle's manual. Be very cautious using repair info from here because these pages may not apply to your vehicle. Different variant/trim Section 1 (EGR Function Testing - Diesel General Motors) Different car Section 1 (Engine Controls - Specifications - 2.5L) Section 2 (Engine Controls - Specifications - 3.0L) Section 3 (Engine Controls - Specifications - 3.3L Gasoline) Section 4 (Engine Controls - Specifications - 3.3L CNG) Section 5 (Engine Controls - Specifications - 3.8L) Section 6 (Engine Controls - Specifications - 3.9L) Section 7 (Engine Controls - Specifications - 5.2L Gasoline) Section 8 (Engine Controls - Specifications - 5.2L CNG) Section 9 (Engine Controls - Specifications - 5.9L Gasoline) Section 10 (Engine Controls - Specifications - 5.9L Diesel) Section 11 (Engine Controls - Specifications - 8.0L) Section 12 (Engine Controls - Adjustments - 2.5L) Section 13 (Engine Controls - Tests W/Codes - 2.5L) Section 14 (Engine Controls - Tests W/Codes - 2.5L) Section 15 (Engine Controls - Adjustments - 3.0L) Section 16 (Engine Controls - Tests W/Codes - 3.0L) Section 17 (Engine Controls - Adjustments - 3.3L Gas) Section 18 (Engine Controls - Tests W/Codes - 3.3L Gasoline) Section 19 (Engine Controls - Adjustments - 3.3L CNG) Section 20 (Engine Controls - Tests W/Codes - 3.3L CNG) Section 21 (Engine Controls - Adjustments - 3.8L) Section 22 (Engine Controls - Tests W/Codes - 3.8L) Section 23 (Engine Controls - Adjustments - 3.9L) Section 24 (Engine Controls - Tests W/Codes - 3.9L) Section 25 (Engine Controls - Adjustments - 5.2L Gasoline) Section 26 (Engine Controls - Tests W/Codes - 5.2L Gasoline) Section 27 (Engine Controls - Adjustments - 5.2L CNG) Section 28 (Engine Controls - Tests W/Codes - 5.2L CNG) Section 29 (Engine Controls - Adjustments - 5.9L Gasoline) Section 30 (Engine Controls - Tests W/Codes - 5.9L Gasoline) Section 31 (Engine Controls - Adjustments - 8.0L) Section 32 (Engine Controls - Tests W/Codes - 8.0L) Section 33 (Engine Controls - Adjustments - 5.9L Diesel) Section 34 (Engine Controls - Theory & Operation - 3.3L Gasoline) Section 35 (Engine Controls - Theory & Operation - 5.2L Gasoline) Section 36 (Engine Controls - Tests W/Codes - 5.9L Diesel) Section 37 (Engine Controls - Theory & Operation - 5.2L CNG) Section 38 (Engine Controls - Remove/Install/Overhaul - 5.2L Gasoline) Section 39 (Engine Controls - Theory & Operation - 3.3L CNG) Section 40 (Engine Controls - Remove/Install/Overhaul - 3.3L Gasoline) Section 41 (Engine Controls - Basic Testing - 2.5L) Section 42 (Computer Relearn Procedures) Section 43 (Vacuum Diagrams) Section 44 (Vacuum Diagrams) Section 45 (Vacuum Diagrams) Section 46 (Engine Controls - Tests W/O Codes - Gasoline) Section 47 (Engine Controls - Tests W/O Codes - Gasoline) Section 48 (Engine Controls - Basic Testing - 3.0L) Section 49 (Engine Controls - Basic Testing - 3.3L Gasoline) Section 50 (Engine Controls - Basic Testing - 3.8L) Section 51 (Vacuum Diagrams) Section 52 (Engine Controls - Basic Testing - 3.9L) Section 53 (Vacuum Diagrams) Section 54 (Vacuum Diagrams) Section 55 (Engine Controls - Tests W/O Codes - Gasoline) Section 56 (Engine Controls - Tests W/O Codes - Gasoline) Section 57 (Engine Controls - Basic Testing - 5.2L Gasoline) Section 58 (Engine Controls - Basic Testing - 5.9L Gasoline) Section 59 (Engine Controls - Basic Testing - 8.0L) Section 60 (Engine Controls - Basic Testing - 5.9L Diesel) Section 61 (Engine Controls - Remove/Install/Overhaul - 5.9L Diesel) Section 62 (Engine Controls - Tests W/O Codes - 5.9L Diesel) Section 63 (Engine Controls - Basic Testing - 3.3L CNG) Section 64 (Engine Controls - Remove/Install/Overhaul - 3.3L CNG) Section 65 (Engine Controls - System/Component Tests - 3.3L (CNG)) Section 66 (Engine Controls - Basic Testing - 5.2L CNG) Section 67 (Engine Controls - Remove/Install/Overhaul - 5.2L CNG) Section 68 (Engine Controls - System/Component Tests - 5.2L CNG) Section 69 (Engine Controls - Tests W/Codes - Body Control Computer) Section 70 (Generator & Regulator) Section 71 (Engine Controls - Tests W/Codes - Body Control Computer) Section 72 (Generator & Regulator) Section 73 (Engine Controls - Tests W/Codes - Body Control Computer) Section 74 (Generator & Regulator) Section 75 (2.5L 4-CYL - VIN [K]) Section 76 (3.0L V6 - VIN [3]) Section 77 (3.3L V6 CNG - VIN [J]) Section 78 (3.3L V6 Gas - VIN [R]) Section 79 (3.8L V6 Gas - VIN [L]) Section 80 (Air Bag Restraint System) Section 81 (Air Bag Restraint System) Section 82 (Engine Controls - System/Component Tests - 2.5L) Section 83 (Engine Controls - System/Component Tests - 3.0L) Section 84 (Engine Controls - System/Component Tests - 3.3L Gasoline) Section 85 (Engine Controls - System/Component Tests - 3.8L) Section 86 (Engine Controls - System/Component Tests - 3.9L) Section 87 (Engine Controls - System/Component Tests - 5.2L Gasoline) Section 88 (Engine Controls - System/Component Tests - 5.9L Gasoline) Section 89 (Engine Controls - System/Component Tests - 8.0L) Section 90 (Engine Controls - System/Component Tests - 5.9L Diesel) Section 91 (Engine Controls - Tests W/O Codes - CNG) Section 92 (Engine Controls - Tests W/O Codes - CNG) Section 93 (Compressed Natural Gas Safety Precautions) Section 94 (Engine Controls - Tests W/Codes - Diesel) Section 95 (Computer Relearn Procedures) Section 96 (Engine Controls - Specifications - Gasoline) Section 97 (Engine Controls - Specifications - Gasoline) Section 98 (Engine Controls - Specifications - 6.5L Diesel) Section 99 (Engine Controls - Adjustments - Gasoline) Section 100 (Engine Controls - Tests W/O Codes - Gasoline) Section 101 (Engine Controls - Adjustments - Gasoline) Section 102 (Engine Controls - Tests W/O Codes - Gasoline) Section 103 (Engine Controls - Adjustments - 6.5L Diesel) Section 104 (6.5L V8 Diesel & Turbo Diesel - VINS [F,P,S,Y]) Section 105 (Engine Controls - Tests W/Codes - 4.3L) Section 106 (Engine Controls - Theory & Operation - Gasoline) Section 107 (Engine Controls - System/Component Tests - Gasoline) Section 108 (Engine Controls - Tests W/Codes - 5.0L) Section 109 (Engine Controls - Tests W/Codes - 5.7L) Section 110 (Engine Controls - Tests W/Codes - 7.4L) Section 111 (Engine Controls - Basic Testing - Gasoline) Section 112 (Vacuum Diagrams) Section 113 (Engine Controls - System/Component Tests - Gasoline) Section 114 (Engine Controls - Basic Testing - Gasoline) Section 115 (Vacuum Diagrams) Section 116 (Engine Controls - Tests W/Codes - 6.5L Diesel) Section 117 (Engine Controls - Tests W/Codes - 6.5L Diesel) Section 118 (Engine Controls - Tests W/O Codes - 6.5L Diesel) Section 119 (Engine Controls - System/Component Tests - 6.5L Diesel) Section 120 (Engine Controls - Basic Testing - 6.5L Diesel) Section 121 (Engine Controls - Tests W/Codes - Electronic Transmission) Section 122 (Engine Controls - Pin Voltage Charts) Section 123 (Engine Controls - Sensor Operating Range Charts) Section 124 (Engine Controls - Remove/Install/Overhaul) Section 125 (Engine Controls - Remove/Install/Overhaul) Section 126 (Computer Relearn Procedures) Section 127 (Wiper/Washer System - G Series Vans) Section 128 (Clutches) Section 129 (Clutches) Section 130 (Suspension - Front (4WD & AWD Torsion Bar)) Section 131 (Removal & Installation - M/T) Section 132 (Removal & Installation - A/T) Section 133 (Air Bag Restraint System) Section 134 (Servicing - A/T) Section 135 (Servicing - A/T) Section 136 (Removal & Installation - A/T) Section 137 (Removal & Installation - A/T) Section 138 (Removal & Installation - A/T) Section 139 (Removal & In

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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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