Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello, if fuses 4 and 19 test good the next step is going to be to check for the signal to the turn signal relay/module. It's pin L and is a light blue and white wire. The input from the brake light switch is on pin F and is a white wire.
It's very unuasual to have both the stop and turn signal switches fail at the same time. Most likely the turn signal relay/module is faulty. I'll post it's location below.