[ltdltc]

You push the turn signal stalk forward for the brights right?

If you have and they still don't work then you may have a faulty MFTSS (multi-function turn signal switch). You may need to replace it, sometimes the contacts can corrode and it malfunctions.

Although you may want to make sure that the filaments on the headlamps themselves aren't burnt out, the headlamps have dual filaments (if your stalk does go forward) for each the low and high beam.