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under hood engine compartment and driver side end of dash or under dash easy to spot signal lights and pump not the same problem take off fuel cap have some one turn on key to hear if pump comes on first then look for fuses and relays
The turn signals use a small relay for the flash, it's located in the interior fuse panel under the dash (small metal/plastic can)...it's the only thing in the fuse panel that's not a fuse.
They're a few dollars at Autozone and easy to replace.
The short/overload killing the dash gauges will be a bit harder to troubleshoot...Do the gauges die with the parking lights, or only after the switch is all the way out to headlights?
The element are serpent in the lights bulb the turn signal and brake usually share the same one but the running or park light are not shared with the turn . so if none of the light for the turn signal light then you will want to look for your flasher control it is ether in or near the fuse box or under dash by steering wheel shaft,,you should also check grounds at light socket if we can be of any further assistance please feel free to ask hope this gives you a place to start .Thank You..
The 2004 Trailblazer has two fuse panels, one in the under hood and one under the middle row seats. The radio fuse is marked RADIO fuse # 41 and is a 15 amp fuse located in the rear fuse panel. To access the rear fuse panel flip the seat behind the driver to the upright position, under it you can see the fuse panel and a diagram should be on the under side of the cover.
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