Quote Originally Posted by rperry435 View Post
Headlights are most likely the hdm solid state relay in the underhood fuse panel.

It provides power to the headlights. Less power 70% I believe for drl... 100% for normal headlights. They will just go bad or intermittently work.

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The GXP doesn't have the solid state type relays on the fuse block under the hood - everything for low & high beams goes through the BCM, which is what seems to be the problem. A new one installed and programmed by GM will set me back about $400.....ouch.