Contents Wiring diagrams Section: Testing & Diagnostics All sections

Engine Controls - 8.1L (Introduction): Component Locations GMC Cab & Chassis Sierra 3500

Testing & Diagnostics 28 illustrations ~243 words

Special Tools

Special Tools Illustration Tool Number/Description J 23738-A Vacuum Pump J 26792 Spark Tester J 33431-B Signal Generator and Instrument Panel Tester J 34730-1A Fuel Pressure Gage J 34730-2C TBI Harness Test Lamp J 34730-405 Injector Test Lamp J 35616-A Connector Test Adapter Kit J 35800-A Fuel Injector Cleaner J 37287 Fuel Line Shut-Off Adapters J 38522 Variable Signal Generator J 39021 Fuel Injector Coil and Balance Tester J 39021-380 Fuel Injector Test Harness J 41413-200 Evaporative Emissions System Tester (EEST) J 41413-SPT High Intensity White Light J 41413-VLV EVAP Service Port Vent Fitting J 41415-40 Fuel Tank Cap Adapter J 41416 Ultrasonic Leak Detector J 41769 Fuel Line Quick Disconnect Tool J 42598 Vehicle Data Recorder J 42873-1 3/8 Fuel Line Shut-Off Adapter J 42873-2 5/16 Fuel Line Shut-Off Adapter J 42964-1 3/8 Fuel Pipe Shut-Off Valve J 42964-2 5/16 Fuel Pipe Shut-Off Valve J 43013 Fuel Injector Assembly Removal Tool J 43178 Fuel Line Disconnect Tool J 43244 Relay Puller Pliers J 44175 Fuel Composition Tester J 45004 Siphon Hose J 45722 Fuel Sender Lock Ring Wrench

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