Dryer buzzing

[jmarberg]

My dryer is making a buzzing sound when it runs. It starts up normally, the drum spins, I can see the ignitor start to glow but when the gas valve opens it clicks and then start buzzing. It does not stop until the gas valve closes. The burner ignites and the dryer heats up. Is possibly a bad coil on the valve or the valve itself? Any ideas? Thanks