Great. A sensor swap and fill the open hole with the bad sensor is the best of both worlds and no money spent. Cross your fingers.
3 O2 Sensors on 1999 Tahoe?
- Thread starter Tahoepleasue
- Start date
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I have 4 and it feels like the connector comes from a T right above the transmission output shaft. Connector is above transfer case right where you are looking for it. Less than a foot from where the sensor is. My best guess is that they are part of the bundle on the passenger frame by the grounds and exhaust or part of the big bundle that ties into the intake manifold against the firewall near the AC drier. Really hard to see/follow in a driveway.
Tahoepleasue
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That's the plug I'm looking for! Ughh, I actually pulled the entire wire harness off the top of the transmission looking for that exact plug (passenger and drivers side) and it's not there. I can see a bracket on top of the t-case where the O2 sensor clips to but that's it. Thank you so much for checking!! I was hoping that others would not have a plug too so I could say that this tahoe has only 3 working sensors and just move on but I'll still be on hunt....
That’s got to be frustrating. I can’t see why someone would remove 1 and leave 3 intentionally
