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Don 'Mo Lurch'
Don 'Mo Lurch', Saturn Mechanic
Category: Saturn
Satisfied Customers: 20515
Experience:  GM, Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.
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I have a Saturn l300 Sedan, 2003 in which the headlights

Customer Question

I have a Saturn l300 Sedan, 2003 in which the headlights will just come on for no reason. Even if the key is not in the ignition they will come on. Replaced the signal and dimmer switch. Still having the issue.
Submitted: 1 year ago.
Category: Saturn
Expert:  Don 'Mo Lurch' replied 1 year ago.

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sorry for the delay............
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Greetings...... “Hi, I’m Don (aka MOLurch) and I look forward to helping you!”
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You may want to replace the Headlight Relay, located in Instrument Fuse / Relay Panel, as the Relay is likely shorting.
Otherwise, the BCM (body control module) can cause this issue & the system would need use of GM Dealer Scan Tool to Test
apprx 1 hour labor
here is schematic for the lights

click Attachment below

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