Follow the electrical wire attached to the back of the oxygen sensor to find the electrical connector. Detach the small plastic stick (connector position assurance or CPA) securing the oxygen sensor connector to the plug and unplug the sensor connector.6.
Thus, a worn-out O2 sensor not single fails to properly communicate with the machine on the other hand may elaboration fuel consumption dramatically. Blockade wasting method and excite the engine back to Correct transaction by replacing a failed sensor or sensors in your Chevy Suburban. This procedure applies to 4.8L, 5.3L and 6.0L engine models.
Instructions
Removing the Oxygen Sensor
1. Guide your Suburban for approximately 20 minutes to bring the engine to operating temperature. This Testament benefit the O2 sensor's threads from the exhaust pipes and bring about it easier to remove.
2. Proceeds the parking brake, shift the transmission to impartial and detach the ground battery cable using a wrench.
3. Lift the front of your Suburban on a team of portable ramps and jack up the rear on jack stands, using a floor jack.
4. Establish the O2 sensor you hope for to convert. You Testament treasure trove the two upstream sensors on the front exhaust pipes, located between the exhaust manifold and the catalytic converter. Normally they are mounted on the pipes by the side of the transmission. You Testament good buy the two downstream sensors on the exhaust pipes that pep from the rear of the catalytic converters to the rear of the vehicle. Normally they are mounted lasting to the converters.
5.
Convert the Oxygen Sensor on a 2003 SuburbanThe O2 (Oxygen) sensors acquire a regulate compel on your 2003 Chevrolet Suburban's fuel efficiency. They dispense critical facts for the personal computer to domination the air/fuel concoction going into Everyone cylinder.Unscrew the oxygen sensor from the exhaust pipe with a ratchet, ratchet extension and an oxygen sensor socket.
Installing the New Oxygen Sensor
7. Apply anti-seize compound to the threads of the new sensor, if the new unit does not come with the compound already applied. This will help remove the sensor next time you need to replace it.
8. Hand-start the new sensor into the exhaust pipe. Tighten the sensor to 30 ft-lbs. (41 Nm), using a torque wrench, ratchet extension and oxygen sensor socket.
9. Plug in the sensor electrical connector and secure the connection with the CPA.
10. Lower the rear of your Suburban off the jack stands with the floor jack and move the vehicle off the ramps.
11. Attach the ground battery cable with the wrench.
