i need to access the check engine light codes on this car(4.6),unlike the gm obd 1 system of jumping test terminals on the connector and reading the "check eng. light flashes"(so easy,so simple)everyone tells me so far i,ve talked to that there is a test plug somewhere under the hood and you've got to jump terminals and use a multimeter use read sweeps of the needle to get the codes,another tells me that you have to jump terminals and read the "check eng. light flashes"with the test plug under the hood,still another tells me that you can jump terminals like a gm connector under the dash to read the flashes on the "check eng. light",yet another tells me that i have to buy a code reader that plugs into the test plug under the hood,this is way to complacated,just what is the way to read the codes rather then having a mech. do it at a price???
also,does this car have one or two O2 sensors on it??
thanks