I take it you have daytime running lights , if so by engaging the emergency / parking
brake the daytime running lights should go off
push the parking brake ,before starting the engine
If you have a voltmeter, measure the voltage across the battery, with the engine running. It should measure around 13 -15 volt (alternator is ok) now turn the engine off it should measure 12volt. If you do not have a voltmeter ,let a friend watch your headlights at night with engine running,than turn engine off, your headlights should go dimmer with engine off.
Check the daytime running light module
Have your Alternator tested. Sounds like the entire engine is running off just the battery.
No. It is an INTERFERENCE engine. Make sure you replace the timing belt, because if it fails while running it will trash the engine.
1999 Toyota camery 4 cyl leaks oil when engine running
Yes, inasmuch as they turn off when you shut off the engine and remove the ignition key; and the standard daytime running lights come on when you're driving. You have to switch from DRL to headlights with a switch, though - but in my soob I just leave my headlight switch on all the time anyway.
Staring at Headlights - 1999 was released on: USA: 4 March 2006
The cast of Headlights - 1999 includes: Darren Walsh as Angry Kid
Loose connection SOMEWHERE. It could be a defective DRL (daytime Running Light) module
It has a timing BELT - recommended replacement mileage is 105,000 miles. CAUTION: This engine is an "interference" engine. If the belt fails while the engine is running it will cause major damage to the engine.
There are a couple of reasons why a 1999 Tahoe headlights may not work. A couple of reasons could be blown bulbs or the wiring.