Oxygen sensor

Discussion in 'Chevy Truck Talk & GM News' started by whitestonian, Jul 18, 2011.

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  1. whitestonian

    whitestonian New Member

    My truck failed the emission test. I've done several things to it already like replaced plugs, wires, distributor cap, rotor, put a can of Seafoam in the gas tank, filled it up with high octane gas. I just ordered an oxygen sensor that goes before the catalytic converter. This is a 3 wire sensor that comes with a plug attached. The plug on the old one is visible from underneath the truck, but I can't reach it to see if it will pull down so I can disconnect the plug. It's located between the firewall and engine. Any ideas how I can pull it down to get access to it?
  2. silveradotrailblazer

    silveradotrailblazer New Member 1000 Posts 100 Posts

    What type, year etc... is truck??

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