I have a 2018 Colorado Z71 4WD with stock headlights and bulbs (non LED). I replaced rear bulbs last year and all was fine. One had went out and I replaced them all to be safe. Recently, I have had the dreaded fast flash on the left rear side. The confusing part is that all blinkers in front and rear on both sides works fine. Parking brake lights as well as reverse lights are all fine. Hazard lights are working fine. But left blinker provides an error of rear indicator light failure.
I've tried to dig into old forums and I'm just stuck. Most post seems to suggest bad light bulbs and then fuses or shorts. But, in my case, all the lights work with the fast blink. What else could be the problem?
I've tried to dig into old forums and I'm just stuck. Most post seems to suggest bad light bulbs and then fuses or shorts. But, in my case, all the lights work with the fast blink. What else could be the problem?
