Can't see in the dark

Maintenance/Repairs
1

I have a 98 Firebird. When I turn on the lights the driver side motor runs to long and grindes down the gears in the motor. What stops the motor from running to long of a cycle?

2

I am not sure about the firebird, but other cars I have seen have vacuum controls, so my first guess would be a bad vacuum hose or diaphram.

3

The headlight door motors are controlled by the Headlight Door Module located in the fender in front of the left front tire. It sounds like HDM is malfunctioning.

Tester

4

Thanks for the reply. I don’t think this type of setup has a vacuum system? Although, I will give it a look. Take it easy waterboy