# 1 oxygen sensor location upstream

2006 CHEVROLET UPLANDER
119,000 MILES
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JOHN PIERCE
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looked on #1cyclendar side and can not find sensor on 3.5 engine where is it ? i found # 2 behind cat conv.
Mar 24, 2012 at 11:59 PM
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RASMATAZ
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Heated Oxygen Sensor (HO2S) 1 (3.5L)In right bank exhaust manifold, before catalytic converter.
Heated Oxygen Sensor (HO2S) 1 (3.9L)In right bank exhaust manifold, before catalytic converter.
Heated Oxygen Sensor (HO2S) 2 (3.5L)In exhaust, after catalytic converter.
Heated Oxygen Sensor (HO2S) 2 (3.9L)In exhaust, after catalytic converter.

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Mar 25, 2012 at 12:03 AM