Chevrolet Workshop Manuals
Express 3/4 Ton Van V8-4.8L VIN V (2003)
Power and Ground Distribution > Auxiliary Power Outlet > Component Information > Diagrams > Diagram Information and Instructions > Page 6471
CIRCUIT PROTECTION - FUSIBLE LINKS
Fusible link is wire designed to melt and break continuity when excessive current is applied. It is often located between or near the battery and starter or
Repairing a Fusible Link
IMPORTANT: Fusible links cut longer than 225 mm (approximately 9 in) will not provide sufficient overload protection.
Refer to Splicing Copper Wire Using Splice Clips.
Flat Wire Repairs
FLAT WIRE REPAIRS
NOTE: The flat wire within the flex wiring harness is not serviceable. If an open or short exists within the flex wiring harness the complete harness
Heated Oxygen Sensor (HO2S) Wiring Repairs
HEATED OXYGEN SENSOR (HO2S) WIRING REPAIRS
J 38125-C Terminal Repair Kit
NOTE: Do not solder repairs under any circumstances as this could result in the air reference being obstructed.
If the heated oxygen sensor pigtail wiring, connector, or terminal is damaged the entire oxygen sensor assembly must be replaced. Do not attempt to
The following guidelines should be used when servicing the heated oxygen sensor:
Do not apply contact cleaner or other materials to the sensor or vehicle harness connectors. These materials may get into the sensor, causing poor
Neither the sensor nor vehicle lead wires should be bent sharply or kinked. Sharp bends, kinks, etc., could block the reference air path through the
Do not remove or defeat the oxygen sensor ground wire (where applicable). Vehicles that utilize the ground wire sensor may rely on this ground as
To prevent damage due to water intrusion, be sure that the peripheral seal remains intact on the vehicle harness connector.
The engine harness may be repaired using the J 38125-C.
Repairing Damaged Wire Insulation
REPAIRING DAMAGED WIRE INSULATION
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