The headlights stopped working on 2005 chevy malibu. the brights still work and the parking lights still work. is it possible for both bulbs to burn out at the same time? is there a fuse somewhere for just the driving lights?

I could be wrong on this but to the best of my knowledge, both high and low beams work off the same fuse. It is the only fuse that isn't hot with the key on. it only has power when the lights are on. First check power at the bulb sockets, then check for a relay or control module problem, dimmer switch etc.. If you can, check with a volt meter instead of a test light as with that you will see actual voltage instead of just if there is some voltage. Make sure there is a good ground as well.

I could be wrong on this but to the best of my knowledge, both high and low beams work off the same fuse. It is the only fuse that isn't hot with the key on. it only has power when the lights are on. First check power at the bulb sockets, then check for a relay or control module problem, dimmer switch etc.. If you can, check with a volt meter instead of a test light as with that you will see actual voltage instead of just if there is some voltage. Make sure there is a good ground as well.

You have high beams but no low beams? correct ? Did you check the low beam relay ? Plus the BCM - body control module may have codes stored .

Headlamps
The headlamps may be turned ON 2 different ways. First, when the driver places the headlamp switch in the HEADLAMP position, for normal operation. Second, with the headlamp switch placed in the AUTO position, for automatic lamp control (ALC). During ALC, the headlamps will be OFF in daylight conditions, or low beam operation in low light conditions. Battery positive voltage is supplied to the low beam relay and the high beam relay in the underhood fuse block. When low beam headlamps are requested, the body control module (BCM) supplies ground to the coil side of the low beam relay. This activates the relay and the relay supplies voltage to the left hand low beam headlamp through the LH LOW BEAM fuse and to the right hand low beam headlamp through the RH LOW BEAM fuse. Ground for the left hand low beam headlamp is provided at G101. Ground for the right hand low beam headlamp is provided at G102. When high beam headlamps are requested, the body control module (BCM) supplies ground to the coil side of the high beam relay. This activates the relay and the relay supplies voltage to the left hand high beam headlamp through the LH HIGH BEAM fuse and to the right hand high beam headlamp through the RH HIGH BEAM fuse. Ground for the left hand high beam headlamp is provided at G101. Ground for the right hand high beam headlamp is provided at G102.


DTC B2575 Headlamp Control Circuit

Circuit Description
The body control module (BCM) turns on the LOW BEAM relay when the ambient light sensor senses a dark condition or the low beam headlamps are requested ON. Battery positive voltage is supplied to the LOW BEAM relay at all times. The BCM grounds the LOW BEAM relay control circuit in order to activate the relay. You have high beams but no low beams? correct ? Did you check the low beam relay ? Plus the BCM - body control module may have codes stored . Headlamps The headlamps may be turned ON 2 different ways. First, when the driver places the headlamp switch in the HEADLAMP position, for normal operation. Second, with the headlamp switch placed in the AUTO position, for automatic lamp control (ALC). During ALC, the headlamps will be OFF in daylight conditions, or low beam operation in low light conditions. Battery positive voltage is supplied to the low beam relay and the high beam relay in the underhood fuse block. When low beam headlamps are requested, the body control module (BCM) supplies ground to the coil side of the low beam relay. This activates the relay and the relay supplies voltage to the left hand low beam headlamp through the LH LOW BEAM fuse and to the right hand low beam headlamp through the RH LOW BEAM fuse. Ground for the left hand low beam headlamp is provided at G101. Ground for the right hand low beam headlamp is provided at G102. When high beam headlamps are requested, the body control module (BCM) supplies ground to the coil side of the high beam relay. This activates the relay and the relay supplies voltage to the left hand high beam headlamp through the LH HIGH BEAM fuse and to the right hand high beam headlamp through the RH HIGH BEAM fuse. Ground for the left hand high beam headlamp is provided at G101. Ground for the right hand high beam headlamp is provided at G102. DTC B2575 Headlamp Control Circuit Circuit Description The body control module (BCM) turns on the LOW BEAM relay when the ambient light sensor senses a dark condition or the low beam headlamps are requested ON. Battery positive voltage is supplied to the LOW BEAM relay at all times. The BCM grounds the LOW BEAM relay control circuit in order to activate the relay.

The fuses for the low beam headlamps are located in the under-hood fuse box. The fuses for the low beam headlamps are located in the under-hood fuse box.