sensor(s) on my 03 GMC Envoy?
one response says O2 sensors have a connector that plugs into the vehicle's harness - but there are many connectors... how do I know which ones and where it is located?
one more thing to add... should mention perhaps 02 sensor is not the prob... maybe cat convert... Truck actually runs great just really poor fuel efficiency. Friend has one and he is getting over 400km per tank... see my other question - How many KM's per Tank should I be getting on my 2003 GMC Envoy?
one response says O2 sensors have a connector that plugs into the vehicle's harness - but there are many connectors... how do I know which ones and where it is located?
one more thing to add... should mention perhaps 02 sensor is not the prob... maybe cat convert... Truck actually runs great just really poor fuel efficiency. Friend has one and he is getting over 400km per tank... see my other question - How many KM's per Tank should I be getting on my 2003 GMC Envoy?