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Showing results for tags 'low beam headlights'.
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Hi guys, just looking for some advice. The issue: I recently had my battery replaced and shortly after this was done my low beams (both sides) quit working. The next day my stereo started turning off and on again, and there's a message on the dash saying "service theft deterrent system" with the lock symbol. I can still drive it though (not at night) and it doesn't lock me out. I checked the fuses and relay for the low beams and they seem fine. I haven't checked the bulbs yet but it seems too coincidental that both would go out at the same time, though I could be wrong. In case this is relevant info: I had the battery replaced a month ago via AAA, but it turned out to be from a bad batch. It died after a few weeks while I was conveniently at a local shop getting a wheel alignment, so the mechanic there jumped it twice (once to get it onto the rack and another to get it back in the parking lot). They showed me how the interior lights were flickering before shutting it off (I didn't see the headlights at that point). AAA replaced the battery in the lot after that since it was under warranty. Any suggestions would be appreciated. I'll take it to a mechanic next week but I wanted to do some research first to see if there's an easy fix I may have missed. Truck is a 2011 GMC Sierra 1500 SLE. Thanks! Caitlin