Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi there, I am Cam.I have some good news with this. It’s a well known issue, the flasher module. This module is on the back side of the dash fuse block. To replace this module, remove the knee bolster trim and through an opening, you can remove and replace the module. The root failure inside is a weakness in the micro relays causing erratic operation like you have found.