Hot answers tagged trailblazer
There is a relay in the fuse box under the hood on the driver's side. On a 2004, it's #46 and labeled 'HDM Relay'. YMMV. You can swap it with a known good relay (same type from the box for something you know is working). #45 should be the same (on a 2004 at least) and should be the engine fan clutch. If the headlights work after the swap, swap them back ...
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