I have a javascript function that populates a form using the option value of a select. When the option is selected, it populates the fields and the other select ('selVehicleEditModel'), but doesn't select an option.

function displayEditVehicle() {
    var data = jQuery('#selVehicleEditList option:selected').val();
    var dataArray = data.split("|");
    jQuery('#inpVehicleId').val(dataArray[0]);
    jQuery('#selVehicleEditMake option[value="' + dataArray[4] + '"]').attr("selected", "selected");
    jQuery('#inpVehicleEditVehicleId').val(dataArray[9]);
    jQuery('#inpVehicleEditColor').val(dataArray[7]);
    jQuery('#inpVehicleEditLicense').val(dataArray[8]);
    jQuery('#inpVehicleEditYear').val(dataArray[6]);

    //get all models for make from database
    updateVehicleEditModel();
    jQuery('#selVehicleEditModel option[value="' + dataArray[5] + '"]').attr("selected", "selected"); 
}

At first, I thought maybe there was a problem with the model (dataArray[5]) being blank or null or something else unexpected, so I put an alert in:

    updateVehicleEditModel();
    alert(dataArray[5]);
    jQuery('#selVehicleEditModel option[value="' + dataArray[5] + '"]').attr("selected", "selected"); 

that confirmed that value was correct ("EXPLORER" in dataArray[5], "EXPLORER" in option value), but it also selected the proper option. Took the alert out, and it's back to not selecting any option.

Any ideas on what is going on here?