i am looking for the wiring diagram for sensor 1 banks 1&2 ( manifold only ) i have 4 prong o2 sensors for a 06 5.3 ecm is blue & red plugs , iam tracing out my wiring i have 1 not working dont know which one ,i know there is 12 volts on the pink wire with the key one ,, dont know anything else right now ,, i want to ohms them out to make sure they aren't broken , them i test for power
thanks

 

How do you know you have one not working, but not know which one it is? The ECM will tell you which O2 sensor is having the issue.

Here's a link that could help you out.

http://lt1swap.com/03_5.3-6.0_o2.gif

 

when i had it dyno, i had 1 not working , so my guy turned them off , i need to have them turned on before i can do any searching ,, i do need a diagram

thanks

 

all my wires check out with ohms , now i have to wait until i get everything back on,, thats the kicker the guys used is a hour away, they dont match the diagram you posted ??
pass side
color pin
tan 26
ppl 66
pink 19
ground chassis ground

drivers side
pink 19
tan/wht 29
ppl/wht 69
ground chassis ground

 

Strange, Maybe your harness is older then you thought. Here is a link to the general info page. Check out the 01-02 isolate ground diagram near the bottom. Looks like what you are describing.

http://lt1swap.com/vortec_o2_sensors.htm

 

thsi is what i have
2001-02 4.8/5.3 with case ground sensors