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1997 Chevy 1500 Express Van


Pellerito
10-17-2009, 06:16 PM
Where are the O2 sensors located and how many (pre and post CAT?)

MT-2500
10-18-2009, 10:48 AM
Where are the O2 sensors located and how many (pre and post CAT?)

Engine and engine code?

Pre cat sensors in front of cat.
Post sensors behind cat.
Bank 1 sensor 1 front sensor on left side of engine.
Bank 2 sensors are in right side exhaust.
Bank 1 sensor 2 will be in front of cat.
Bank 1 sensor 3 is usually behind cat.

MT-2500
10-18-2009, 10:51 AM
Why are you asking locations?
any codes or problems with them?
Code no?
And what engine and transmission and engine code?

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