o2 sensor

A long story I will shorten it the best I can. I bought a 2007 Chevy Tahoe 4x4 with 95000 miles on it from my girlfriends dad. It had some issues mostly used in the countryside hunting, fishing, camping, etc. Living in the countryside they did not need to follow emission standards that us...

Having problems with Bank2 side, passenger, all plugs show rich/fouled and O2 is black. Now this started when I ran through some water, hesitation started, loss of power. Tested, plugs, coils, changed coil wires, check cylinder pressure, everything good. ran Seafoam, octane boost, no...

Hello All, I'm having a problem on Bank2 side, passenger, all plugs show rich/fouled and O2 is black. Now this started when I ran through some water, hesitation started, loss of power. Tested, plugs, coils, changed coil wires, check cylinder pressure, everything good. ran Seafoam, octane...

Let m explain everything that is going on. I picked up a used Tahoe this past weekend from a friend of a friend. There is no heat in the Tahoe and I looked at it and it was low, and nasty looking. I added some but still nothing so I thought it could use a flush and I had that done and still...

Does anybody know anything about a replacement plug for the post-cat O2 sensor plug? Some guy re-programmed my ECU/PCM and did a O2 delete (from what I'm told) and has since disappeared. But the last thing he said was not to start the truck until a filler plug is in place. From what I'm...

Hello, I have a 2002 Tahoe with 125,000 miles. The Service Engins Soon light came on and the error code shows, "Fuel too lean Banks 1 & 2." To me this indicates O2 sensors. I changed both, now the light comes on intermittantly. I have looked for the EGR valve, but think I don't have on...