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Gary
Gary, ASE Certified Technician
Category: Chevy
Satisfied Customers: 744
Experience:  Senior Technician
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Chevrolet C1500 4x2: i changed the #1 sensor on bank 2 because

Customer Question

i changed the #1 sensor on bank 2 because the obd2 saiad it was bad and it would not pass smog. the truck ran better for a day or so then the check engine light came back on. obd2 says sensor 1 on bank 2 "no activity" is my problem wiring???? 1996 silvarado 5.7l
Submitted: 7 months ago.
Category: Chevy
Expert:  Gary replied 7 months ago.
Hi there, If you are sure you have changed Bank 1 Sensor 2, then you most likely have a wiring fault.Are you capable of wiring diagnosis and repair to your vehicle?Do you have access to the PCM wiring diagram?Gary
Expert:  Gary replied 7 months ago.
Hi again,Do you need any further help?I hope my advice has been of assistance to you.Regards Gary