Description:
The oxygen sensor is used to control the air intake, fuel supply, injector, electronic control unit, control sensor, catalytic converter, exhaust gas, diagnostic sensor and other circuits.

Applicable Model:

2004-2005 Cadillac CTS 5.7L
2007 Cadillac CTS 6.0L
2000-2003 Cadillac DeVille 4.6L
2000-2002 Cadillac Eldorado 4.6L
2000-2003 Cadillac Seville 4.6L
2004-2007 Chevrolet Malibu 3.5L
2006-2007 Chevrolet Malibu 3.9L
2007 Chevrolet Silverado 1500 4.8L
2007 Chevrolet Silverado 1500 5.3L
2007 Chevrolet Silverado 1500 6.0L
2007 Chevrolet Silverado 2500 HD 6.0L
2007 Chevrolet Silverado 3500 HD 6.0L
2007 GMC Sierra 1500 4.8L
2007 GMC Sierra 1500 5.3L
2007 GMC Sierra 1500 6.0L
2007 GMC Sierra 2500 HD 6.0L
2007 GMC Sierra 3500 HD 6.0L
2005-2007 Pontiac G6 3.5L
2007 Pontiac G6 3.6L
2006-2007 Pontiac G6 3.9L
2007 Saturn Aura 3.5L
2007 Saturn Aura 3.6L

Key features:
1. The stainless steel body is welded by double lasers to prevent contamination
2. Pre-coated thread with anti-seize agent in the box
3. OE connector and wiring harness that can be directly installed
4. The protection tube is 100% functional and quality tested

location information :

1. The upstream oxygen sensor is also called sensor 1, or pre-cat, or upper oxygen sensor, located on the left or right before the catalytic converter
2. The downstream oxygen sensor is also called sensor 2, or post-cat, or lower oxygen sensor, located on the left or right after the catalytic converter

Installation method:
Step 1: Remove all the mounting bolts of the heat shield on the sensor.
Step 2: Use a regular socket to avoid peeling off the old sensor during disassembly.
Step 3: Find and disconnect the wiring connector (Note: If the wiring is not disconnected, complete the disconnection before removing the sensor.)
Step 4: It is very important that the wiring harness connectors are exactly the same, the position of each sensor cannot be mistaken, and it is located in the system through its connector configuration. (Note: Some replacement sensors have a general electrical connector, which must be configured to the wiring of the old sensor.)
Step 5: Clean the threaded port with a small wire brush to seal the new sensor properly. When installing a new oxygen sensor, ensure that the wiring and connector are not bent.
Step 6: Tighten the sensor gently to keep the sensor very fit and the wiring not damaged.
Step 7: After tightening the sensor, install all heat shields or supports that must be removed.
Step 8: After reinstalling the heat shield, install the connector on its bracket and reconnect the connector to the wiring harness. If the car has diagnostic trouble codes, clear them in time.

How to distinguish the quality of oxygen sensor :
1. Observe whether the engine light is on 
2. Observe whether the fuel performance is reduced
3. Observe whether the catalytic converter is malfunctioning
4. Observe whether the exhaust emission reaches a bad level

Purchase attention :
Please read the following instructions and guidance reference information carefully .
1. If the check engine light is on or OBDII fault/fault code appears after installation, please use a voltmeter to check the sensor. If the sensor is good, further diagnosis is required. The codes caused by specific functional failures are different, and they are not necessarily related to the sensor.
2. The manufacturer’s warranty prerequisite: Defective sensor after voltmeter test .
3. If the buyer does not pay attention to the decoration information and buys the wrong product, and requires a return or exchange, a 20% purchase fee will be charged. The price, quality and functionality of the O2 sensor are within the scope of the warranty and return policy. But it does not include any labor costs, dealer store fees, or damage due to incorrect installation .
4. Items that have been installed, changed or contaminated are not refundable.