How many oxygen sensors are there on this truck
Where are the bank one oxygen sensors located
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Hey, @pernellgroom
The 2001-2006 GMC Yukon came off the assembly line with two Bosch O2 Sensors, installed below the exhaust manifold flanges and above the cat converter. Good Luck.
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@pernellgroom there are a total of 4 (four ) O2 sensors. Bank 1 is on the driver side and sensor 1 is the upstream O2 sensor, whereas sensor 2 is the downstream past the cat one.
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