Hi all. I am new here and am not a mechanic.
I do almost all my own repairs once I know what is wrong.
I have a 2002 Sonoma, 4.3L with 4 wheel drive
I need to change my O2 sensors. Some part sites have 2 different numbers for the upstream and downstream sensors. Others list only 1 p/n.
Some have 3 wires and some show 4 wires.
How do I know what to buy before I get under the trucki?
thanks
I do almost all my own repairs once I know what is wrong.
I have a 2002 Sonoma, 4.3L with 4 wheel drive
I need to change my O2 sensors. Some part sites have 2 different numbers for the upstream and downstream sensors. Others list only 1 p/n.
Some have 3 wires and some show 4 wires.
How do I know what to buy before I get under the trucki?
thanks