This is pretty odd. My 97 Blazer only has one bulb for day time running, low beams, and high beams. The DRL and High beams work fine but the low beams only work on the passenger side. Anyone seen this problem before? I searched through the forums but didn't see anyone with only one side not working.

 

Probably a bad filament but I'm not that familiar with DRL. How many filaments are in the bulb?

 

Only a single filament in there. I forgot to say I went and picked up a new bulb and had the same problem with the new one.

 

Time to check wiring my friend.

 

Anyone know where the relays are located on a 97?

 

doubt its a relay (would affect both drv n pas side's @ the same time). get out the volt meter and test the connectors on your wiring harness.

As far as DRL's go, they run off your highbeam's so do your hi's even work? i suspect the harness has corroded out or the wires have cracked inside of it.