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sprinkles08
sprinkles08, ASE Certified Technician
Category: GMC
Satisfied Customers: 23131
Experience:  ASE Master and Advanced level certified. Factory trained with 17 years dealership experience
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How to wire a wideband o2 sensor in place of the factory

Customer Question

How to wire a wideband o2 sensor in place of the factory narrow band o2 sensor.
Submitted: 2 months ago.
Category: GMC
Expert:  Ted G. replied 2 months ago.

Not really possible. The computer will not be able to decipher the information from the wideband, it's not programmed for it.

Customer: replied 2 months ago.
Actually very possible. A UEGO wideband can send out the signal
& data to the ecu that it needs & also send info to a logging device. There are made to replace factory o2 sensors. Just looking for some wiring help.
Customer: replied 2 months ago.
I need the wiring diagram for the upstream (closest to engine) factory o2 sensors on a 2014 GMC Sierra 1500 5.3L
Expert:  sprinkles08 replied 2 months ago.

Hello and welcome to JustAnswer!

The violet/blue wire is the power feed for the heaters.

On the 1/1 sensor the gray/white is the heater driver.

White/black is sensor ground.

Violet/gray is signal.

On the 2/1 sensor green/yellow is the heater driver.

Violet/white is signal.

Yellow/white is sensor ground.

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