How to replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 on Cadillac CTS?

Start by turning off the ignition to begin replacing the heated Oxygen Sensor (HO2S) bank 1 sensor 1. Remove the ho2s electrical connector before taking out the component from its wiring harness bracket position. The procedure becomes less challenging when performing the removal at temperatures above 48°c (120°F) because the vehicle must be lifted and supported. Gently extract the ho2s from the Catalytic Converter while being careful to protect the pigtail connector which stays permanently attached. Use anti-seize compound p/n 5613695 or equivalent on ho2s threads during installation if you plan to reuse the sensor before fitting it to the Catalytic Converter. Tighten the sensor to 40 nm (30 lb ft). After lowering the vehicle you must reattach the ho2s electrical connector to the wiring harness bracket before making sure it has a firm connection.

How to replace the Bank 1 Sensor 2 Heated Oxygen Sensor (HO2S) on Cadillac Escalade?

To remove the bank 1 sensor 2 heated oxygen sensor (Ho2s), lift and support the automobile first. Connect the fuel system pressure sensor to the 2.8V reference of the fuel system pressure reference. Connect the ground to the ground of the fuel system pressure sensor. If applicable, check the fuel dump valve closure. Upon vehicles with a fuel composition sensor, open the Ho2s electrical connector out of the fuel line up. For 4.8L or 5.3L engines, remove the Ho2s's electrical connector and the same for the 6.0 L engine. Remove the Ho2s. When reinstalling the old sensor, it pays to coat the threads with anti-seize compound GM P/N 12377953 or factory equivalent since a special anti-seize compound consisting of liquid graphite & glass beads is applied to the Ho2s threads to help make it easier to remove. Sxdfi is a tool used to help remove the spend marks, conduct the multiple changes, drills, and also used for pointing. For 6.0L engine connect Ho2s and do the same for the 4.8L or 5.3L engine. If necessary, affix the Ho2s electrical connector to the fuel line clip, unplug the CPA retainer, and plug the fuel composition sensor electrical plug before lowering the vehicle.

OEM Cadillac Oxygen Sensor

Oxygen O2 Sensor

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103 Oxygen Sensors found

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Cadillac Oxygen Sensor Part Number: 12562943
$62.29 MSRP: $126.52
You Save: $64.23 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
Fits the following Cadillac Models:
- Escalade | 2002 | Base | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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Cadillac Oxygen Sensor Part Number: 12580466
$62.06 MSRP: $126.05
You Save: $63.99 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Front Oxygen Sensor; Sensor, Computer Control Sensors
Fits the following Cadillac Models:
- CTS | 2006-2007 | Base, V | 6 Cyl 2.8 L GAS, 6 Cyl 3.6 L GAS, 8 Cyl 6.0 L GAS
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Cadillac Oxygen Sensor Part Number: 12616201
$98.76 MSRP: $192.34
You Save: $93.58 (49%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Front Oxygen Sensor; Sensor, Computer Control Sensors
Fits the following Cadillac Models:
- CTS | 2010-2011 | Base, Luxury, Performance, Premium | 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L GAS
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Cadillac Oxygen Sensor Part Number: 12643708
$38.86 MSRP: $78.92
You Save: $40.06 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Lower Oxygen Sensor
Fits the following Cadillac Models:
- CTS | 2016 | V | 8 Cyl 6.2 L GAS
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Cadillac Oxygen Sensor Part Number: 19178961
$61.43 MSRP: $124.77
You Save: $63.34 (51%)
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25315809
Fits the following Cadillac Models:
- Escalade | 2002 | Base | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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Cadillac Oxygen Sensor Part Number: 12596327
$132.76 MSRP: $269.65
You Save: $136.89 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Wideband Air/Fuel Sensor; Air / Fuel Ratio Sensor; Air/Fuel Sensor; Front Oxygen Sensor
Fits the following Cadillac Models:
- CTS | 2005-2009 | Base | 6 Cyl 2.8 L GAS, 6 Cyl 3.6 L GAS
- SRX | 2006 | Base | 6 Cyl 3.6 L GAS
- STS | 2005-2007 | Base | 6 Cyl 3.6 L GAS, 8 Cyl 4.6 L GAS
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Cadillac Oxygen Sensor Part Number: 12648137
$45.43 MSRP: $92.28
You Save: $46.85 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Upper Oxygen Sensor
Fits the following Cadillac Models:
- CT5 | 2020-2024 | Premium Luxury, V | 6 Cyl 3.0 L GAS
- CT6 | 2016-2019 | Luxury, Platinum, Premium Luxury, Sport | 6 Cyl 3.0 L GAS
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Cadillac Oxygen Sensor Part Number: 12645561
$46.17 MSRP: $93.76
You Save: $47.59 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Upper Oxygen Sensor
Fits the following Cadillac Models:
- ATS | 2013-2016 | Base, Luxury, Performance, Premium | 4 Cyl 2.0 L GAS, 4 Cyl 2.5 L GAS
- CTS | 2014-2016 | Base, Luxury, Performance, Premium | 4 Cyl 2.0 L GAS
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Cadillac Upper Oxygen Sensor Part Number: 55584585
$105.41 MSRP: $214.10
You Save: $108.69 (51%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Oxygen Sensor; Sensor, Computer Control Sensors
- Replaces: 55569903
Fits the following Cadillac Models:
- ELR | 2014-2016 | Base | 4 Cyl 1.4 L PLUG-IN HYBRID EV-GAS (PHEV)
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Cadillac Oxygen Sensor Part Number: 19178930
$66.41 MSRP: $134.88
You Save: $68.47 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Front Oxygen Sensor
- Replaces: 25312184, 25165313, 25171579
Fits the following Cadillac Models:
- Fleetwood | 1994-1996 | Base, Brougham | 8 Cyl 5.7 L GAS
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Cadillac Oxygen Sensor Part Number: 24402860
$71.10 MSRP: $144.42
You Save: $73.32 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
Fits the following Cadillac Models:
- CTS | 2003-2004 | Base, Luxury, Luxury Sport | 6 Cyl 3.2 L GAS
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Cadillac Oxygen Sensor Part Number: 12597449
$92.36 MSRP: $173.44
You Save: $81.08 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors; Rear Oxygen Sensor
Fits the following Cadillac Models:
- CTS | 2008-2009 | Base, V | 6 Cyl 3.6 L GAS, 8 Cyl 6.2 L GAS
- SRX | 2007-2009 | Base | 6 Cyl 3.6 L GAS
- STS | 2007-2009 | Base, Platinum | 6 Cyl 3.6 L GAS
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Cadillac Oxygen Sensor Part Number: 12616203
$97.69 MSRP: $198.42
You Save: $100.73 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Rear Oxygen Sensor; Sensor, Computer Control Sensors
Fits the following Cadillac Models:
- CTS | 2010-2012 | Base, Luxury, Performance, Premium, V | 6 Cyl 3.0 L GAS, 6 Cyl 3.6 L GAS, 8 Cyl 6.2 L GAS
- STS | 2010-2011 | Base | 6 Cyl 3.6 L GAS
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Cadillac Oxygen Sensor Part Number: 12565397
$67.75 MSRP: $137.61
You Save: $69.86 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 12563346
Fits the following Cadillac Models:
- Escalade | 2002 | Base | 8 Cyl 6.0 L GAS
- Escalade EXT | 2002 | Base | 8 Cyl 6.0 L GAS
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Cadillac Oxygen Sensor Part Number: 12679686
$75.59 MSRP: $141.96
You Save: $66.37 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Pre-Catalyst Bank 1 Se; Lower Oxygen Sensor; Sensor, Computer Control Sensors
Fits the following Cadillac Models:
- CT6 | 2019-2020 | Platinum, V | 8 Cyl 4.2 L GAS
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Cadillac Oxygen Sensor Part Number: 5613719
$52.82 MSRP: $164.76
You Save: $111.94 (68%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor Assembly, Oxygen; Sensor
- Replaced by: 19211435
Fits the following Cadillac Models:
- Brougham | 1987 | Base, d'Elegance | 8 Cyl 5.0 L GAS
- Cimarron | 1984-1987 | Base, d'Oro | 4 Cyl 2.0 L GAS, 6 Cyl 2.8 L GAS
- DeVille | 1985-1987 | Base, Cabriolet, d'Elegance, Touring | 8 Cyl 4.1 L GAS
- Eldorado | 1984 | Base, Biarritz, Cabriolet, Touring | 8 Cyl 4.1 L GAS, 8 Cyl 5.7 L DIESEL
- Fleetwood | 1984-1987 | 60 Special, 75, 75 Formal, Base, Brougham, Brougham d'Elegance, d'Elegance, Formal | 8 Cyl 4.1 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L DIESEL, 8 Cyl 6.0 L GAS
- Seville | 1984 | Base, Elegante | 8 Cyl 4.1 L GAS, 8 Cyl 5.7 L DIESEL
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Cadillac Oxygen Sensor Part Number: 19178939
$50.91 MSRP: $143.32
You Save: $92.41 (65%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor, Computer Control Sensors
- Replaces: 25132086, 25165311, 25312178
Fits the following Cadillac Models:
- Allante | 1993 | Base, Indianapolis 500 Pace Car, Value Leader | 8 Cyl 4.6 L GAS
- DeVille | 1994-1995 | Base | 8 Cyl 4.9 L GAS
- Eldorado | 1993-1995 | Base, ETC, Sport, Touring | 8 Cyl 4.6 L GAS
- Seville | 1993-1995 | SLS, STS | 8 Cyl 4.6 L GAS
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Cadillac Heated Oxygen Sensor Assembly Part Number: 19355306
$57.54 MSRP: $116.86
You Save: $59.32 (51%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Oxygen Sensor; Sensor, Computer Control Sensors
- Replaces: 19178116, 25163080, 25312201
Fits the following Cadillac Models:
- Escalade | 2002, 1999-2000 | Base | 8 Cyl 5.3 L GAS, 8 Cyl 5.7 L GAS, 8 Cyl 6.0 L GAS
- Escalade EXT | 2002 | Base | 8 Cyl 6.0 L GAS
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Cadillac Oxygen Sensor Part Number: 12598296
$9.41 MSRP: $17.69
You Save: $8.28 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 1); Sensor, Computer Control Sensors
Fits the following Cadillac Models:
- XLR | 2006-2009 | Base, Platinum, V | 8 Cyl 4.4 L GAS, 8 Cyl 4.6 L GAS
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Cadillac Oxygen Sensor Part Number: 12610969
$93.70 MSRP: $175.98
You Save: $82.28 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Heated Oxygen (Position 2); Rear Oxygen Sensor; Sensor, Computer Control Sensors
Fits the following Cadillac Models:
- SRX | 2007-2009 | Base | 8 Cyl 4.6 L GAS
- STS | 2007-2010 | Base, Platinum | 8 Cyl 4.6 L GAS

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Cadillac Oxygen Sensor

Choose OEM Oxygen Sensor, you're making the optimal decision for superior quality and perfect performance. You can feel confident because each component goes through stringent quality checks. Every part is carefully built to comply with Cadillac's factory specifications. You'll enjoy a smooth, worry-free installation that fits just right. At ChevyPartsDeal.com, you'll find it easy to get top-quality OEM Cadillac Oxygen Sensor. You can shop at highly competitive prices and protect your budget. All our genuine Cadillac parts include a dependable manufacturer's warranty. You'll also appreciate our straightforward return policy and swift delivery services for extra convenience.

Cadillac Oxygen Sensor wastes fuel and reduces emissions of everyday driving. Cadillac has a history dating back to 1902 and has taken over a century to perfect swagger and speed. Smoothing lines across the body collide with a strong powertrain, providing drivers with a lot of sure power without gaudy effects. The interiors are like fancy sitting rooms with large clear screens, clear sound, and seats that are not uncomfortable on the knees. All switches, stitches, and software menu responses are fast, leaving the pilot with control as opposed to being lost in a menu. Cadillac continues to stack on aggressive technology like panoramic smart glass roofs and full-width displays that transform light shows out of long hauls. Even its new battery sedans are based on performance-oriented foundations, and it shows that the badge is pursuing future sensations, not nostalgia. The Cadillac Oxygen Sensor is an actual living organism that dwells in the exhaust stream with its zirconium tip comparing the outside air with the roaring past hot gases. The sensor does release voltage fluctuations that are read by the engine computer immediately to lean or enrich fuel prior to the following piston firing. The importance of the data of the upstream Oxygen Sensor is the first one as the catalytic converters are protected by raw hydrocarbons. As an Oxygen Sensor ages, the voltage changes become flat, the mixture becomes sloppy, the mileage decreases, and the tailpipes emit hazy smoke.

Cadillac Oxygen Sensor Parts and Q&A

Oxygen Sensor
12575657
Q: How to replace the Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 on Cadillac CTS?
A:
Start by turning off the ignition to begin replacing the heated Oxygen Sensor (HO2S) bank 1 sensor 1. Remove the ho2s electrical connector before taking out the component from its wiring harness bracket position. The procedure becomes less challenging when performing the removal at temperatures above 48°c (120°F) because the vehicle must be lifted and supported. Gently extract the ho2s from the Catalytic Converter while being careful to protect the pigtail connector which stays permanently attached. Use anti-seize compound p/n 5613695 or equivalent on ho2s threads during installation if you plan to reuse the sensor before fitting it to the Catalytic Converter. Tighten the sensor to 40 nm (30 lb ft). After lowering the vehicle you must reattach the ho2s electrical connector to the wiring harness bracket before making sure it has a firm connection.
Oxygen Sensor
12572705
Q: How to replace the Bank 1 Sensor 2 Heated Oxygen Sensor (HO2S) on Cadillac Escalade?
A:
To remove the bank 1 sensor 2 heated oxygen sensor (Ho2s), lift and support the automobile first. Connect the fuel system pressure sensor to the 2.8V reference of the fuel system pressure reference. Connect the ground to the ground of the fuel system pressure sensor. If applicable, check the fuel dump valve closure. Upon vehicles with a fuel composition sensor, open the Ho2s electrical connector out of the fuel line up. For 4.8L or 5.3L engines, remove the Ho2s's electrical connector and the same for the 6.0 L engine. Remove the Ho2s. When reinstalling the old sensor, it pays to coat the threads with anti-seize compound GM P/N 12377953 or factory equivalent since a special anti-seize compound consisting of liquid graphite & glass beads is applied to the Ho2s threads to help make it easier to remove. Sxdfi is a tool used to help remove the spend marks, conduct the multiple changes, drills, and also used for pointing. For 6.0L engine connect Ho2s and do the same for the 4.8L or 5.3L engine. If necessary, affix the Ho2s electrical connector to the fuel line clip, unplug the CPA retainer, and plug the fuel composition sensor electrical plug before lowering the vehicle.