[christyh]

Wondering if anyone else has had this happen. I have headlights but the high beams don't work. Blinkers aren't working either. The turn signal switch was replaced and did not correct the problem.

 

[ChevyGuy]

I'd check the fuses. If it's not that, then there's a good chance you're looking at a defective BCM ($$$). But first, I'd check the wiring from the turn signal stalk back to the BCM.

Does the 4-way flashers work?

 

[christyh]

yes the flashers work. The fuses look good too.

 

[christyh]

thank you for answering back. We will check the wires

 

[ChevyGuy]

Ok, the flashers use the same bulbs as the blinkers. So everything from the BCM to the bulbs are OK. Given that everything affected is part of that control, I think there's something keeping the signal from getting to the BCM. I suppose it's possible to be a bad BCM, but that strikes me as unlikely.