How many O2 sensors does a 2007 GMC Yukon have?
Oxygen sensors are located before and after the catalytic converter. A vehicle may have two to five oxygen sensors, and sometimes even more.
What happens when the oxygen sensor goes bad in a GMC Yukon?
When an O2 (oxygen) sensor go bad, it’ll cause your GMC Yukon ‘s engine to run less efficiently. Your Yukon can exhibit symptoms when the Oxygen sensor has gone bad. Or, it may exhibit none at all. Often enough, the only sign of the problem at all is the service engine soon light being on.
Where is the O2 sensor in the exhaust manifold?
Fig. 2: Location No. 1 — Typical O2 Sensor located in the exhaust manifold Fig. 4: Location No. 3 — Exhaust collector (where more than 1 pipe joins together)
Can you test the O2 sensor on a GM 4.3L?
Testing the oxygen sensor (commonly referred to as O2 sensors) on your 4.3L, 5.0L, or 5.7L GM vehicle is not that hard to do. Since oxygen sensors are not cheap and sometimes the PCM (Powertrain Control Module = Fuel Injection Computer) accuses them of being bad, when they aren’t, testing them is a good idea and this article will help you.
Are there any oxygen sensors on my GM mini van?
Your 4.3L, 5.0L, or 5.7L GM pick up, van , SUV, or mini-van comes equipped with several oxygen sensors, this article concentrates on testing the two that are before the catalytic converter ( O2S11 and O2S21 ). Important Suggestions And Tips. Symptoms Of A Bad Oxygen Sensor. Oxygen Sensor Basics. Where Are O2S11 And O2S21? Oxygen Sensor Test 1.
How do you change the oxygen sensor on a GMC Yukon?
The GMC Yukon uses a wiring harness that pulls free by hand, so carefully pull it upward away from the sensor. Remove the oxygen sensor using an oxygen sensor socket and ratchet. Check the thread area on the truck and wipe it with a clean rag if needed to clear any debris. Insert the new oxygen sensor using the oxygen sensor socket and ratchet.
Why does my Yukon have a bad O2 sensor?
Your Yukon’s oxygen sensors are responsible for helping to keep your engine running at optimal efficiency. The engine management computer uses the data from all of the O2 sensors to keep the air/fuel mixture optimized. A bad oxygen sensor can affect the mixture greatly.
What does the oxygen sensor on a GMC car do?
The oxygen sensor monitors the amount of unburned oxygen that is in the exhaust as the exhaust exits the engine. This is an important process for the vehicle as it controls the fuel mixture and regulates the Gmc car engine performance and emissions.
Fig. 2: Location No. 1 — Typical O2 Sensor located in the exhaust manifold Fig. 4: Location No. 3 — Exhaust collector (where more than 1 pipe joins together)