I'm having a problem trying to figure this out on my own. It is a 2005 Malibu Classic. I put a scanner on it and pulled 2 codes from it. They were B2575(ALC Headlamp Voltage Out of Range) and B2577(ALC Headlamp Relay Output Ground Open) Any idea what I should bee looking for to trouble shoot this? The relays under the hood for the ALC are all good, but I'm not sure what to do from there.... Also if this helps any the DRL's do not work either. Any Help would be appreciated. I was looking for a detailed wiring schematic for the BCM and Lighting on this car with not much luck.
I have checked all connections and have even ohmed the output from BCM to the ALC Relay and the wire is good. The only thing I really haven't done is replaced the BCM. If I got a used one. Is there anyway to reprogram the thing besides taking it to a dealer or if I get one with the same options can you just relearn the passlock using the 30min procedure?
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