Sierra 1500 2WD V6-4.3L (2008)
Notice: Handle the oxygen sensors carefully in order to prevent damage to the component. Keep the electrical connector and the exhaust inlet end free
of contaminants. Do not use cleaning solvents on the sensor. Do not drop or mishandle the sensor.
Heated Oxygen Sensor Wire Repair Notice
Heated Oxygen Sensor Wire Repair Notice
Notice: Do not solder heated oxygen sensor wires. Soldering the wires will result in the loss of the air reference to the sensor. Refer to Engine Electrical
for proper wire and connection repair techniques.
Heated Oxygen Sensor Pigtail Notice
Heated Oxygen Sensor Pigtail Notice
Notice: The heated oxygen sensors each use a permanently attached pigtail and connector. Do not remove the pigtail from the heated oxygen sensor.
Damage or removal of the pigtail or the connector affects proper operation of the heated oxygen sensor. Handle the oxygen sensor carefully. Do not drop
the oxygen sensor. Keep the in-line connector and the louvered end free of grease, dirt, or other contaminants. Do not use cleaning solvents of any type.
Do not repair the wiring, the connector, or the terminals. Replace the oxygen sensor if the pigtail wiring, the terminals, or the connector is damaged.
Proper oxygen sensor operation requires an external air reference. This external air reference is obtained by way of the oxygen sensor signal and heater
wires. Any attempt to repair the wires, the connectors, or the terminals results in the obstruction of the air reference and degrades the oxygen sensor
performance. A dropped oxygen sensor is a bad oxygen sensor.
