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Gary, Chevy Technician
Category: Chevy
Satisfied Customers: 15564
Experience:  15 years GM master tech
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venture: po..02 sensor..power control module..throttle position sensor

This answer was rated:

The 05 venture van just coded PO 135 02 sensor heater.
How hard is this sensor to change out and where is it located.
Or could I be looking for other problems.
The van has 162k and I have just replaced the power control module then the throttle position sensor (thurned out to be broken wire just like you said.
I checked the code at Orillles and cleared it and it has not returned yet.
not too bad to replace the sensor.usually when you have a heater O2 code it is the heater inside the O2 that is bad
Customer: replied 5 years ago.
where is the sensor located?
it is located in the rear exhaust manifold.the way to change it is from under neither.once you get under the truck you will see is a picture of it
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