turn signal flasher unit location

2001 CHEVROLET ASTRO
130,000 MILES • 6 CYL • AWD • AUTOMATIC
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SCARC8787
  • MEMBER
  • 1 POST
Bought it very used, apparently wiring harness was burned up, driving in rain with salt on road shorted out wires which ran starter while driving on interstate and trashed alternator and starter. When they were fixed, turn signals and emergency flashers were not working, but brake lights are. It appears brake lights and signals are on the same fuse, and no fuses look blown, so I don't think a fuse is the problem. In the owner's manual, there is no reference to a flasher unit for signals and emergency lights, but I assume there must be one. Its not in either the under-hood fuse/relay center, nor the interior fuse panel at the driver's feet. Is there a flasher unit, and if so, where, or is there likely another cause?
Jan 3, 2009 at 2:32 PM
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KASEKENNY
  • ASE Certified Mechanic
  • 18,907 POSTS
  • ASE Certified Mechanic
This is called a turn signal flasher module and it is in the driver foot well.

Here are a couple guides that will help with this:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Below you will find the wiring diagram and the location view and process to replace it.

Please run through this and let us know if you have other questions.

Thanks
Jul 30, 2021 at 8:33 AM
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