Go5.3tt06

iTrader: (1)

Anybody see if you have any picture or draw a picture tell me how it work sonce I'm try to understand myself about front and back o2 sensor bank 1 and bank 2. As for my 06 silverado 5.3 have trouble po145 I think it say bank 1 and bank 2 rich.

I remember Allen Nelson did tuned my PCM to cover o2 sensors. Because I run no cat. It should be front o2 sensors cover the tune right?

Need picture for that please?
Bank 1 Sensor 1 - Driver's side before convertor (front)
Bank 1 Sensor 2 - Driver's side after convertor (rear)

Bank 2 Sensor 1 - Passenger's side before convertor (front)
Bank 2 Sensor 2 - Passenger's side after convertor (rear)

Atomic

iTrader: (42)

Im not sure what you are asking...your descriptions of the sensor locations is correct...

Go5.3tt06

iTrader: (1)

yes the locate both sensors on front and both others on rears what it call that's why im confused
Let me draw in shortly

Go5.3tt06

iTrader: (1)

My engine light keep come back like between 10-15 miles I kept clear code and keep come back say bank 1 and bank 2 rich.

Go5.3tt06

iTrader: (1)

Which I have most problem P0175 bank 1 system rich and p0172 bank 2 syste rich. Is that front 02 sensors are bad? I think the rear o2 sensors been tuned deleted since I run catless. I clear the code. Id say about 10-20 miles came back on. I kept doing over and over. I cleaned MAF, new air filter, took 02 sensors out and clean and put back together. Still same. But that's werid if I disconnect battery for an hour. Drive long no engine light until closer 100 miles. Came back. So I use obd2 scan to clear the code. It would keep come back a lot if you drive between 10-20 miles. Makes sense?

Or possible cause gasoline since I been running 93 premium for long time. Now I been run 89 Plus, it might cause engine light on?

Go5.3tt06

iTrader: (1)

As today drove around still get engine light back on alot. Is anyone who had experience with same issues. Maybe you can help me to resolve? I'd appericated it. FYI I did research alot on this site about my code troubleshooting and I did following up. Still same

2xLS1

iTrader: (25)

is it a Flex Fuel truck?

Go5.3tt06

iTrader: (1)

want update with yall. Nelson send me another tune pcm update Now much better no more engine light so far. Due fuel run rich