What year Colorado?
Colorado turn signals
The turn signals on my 2017 colorado are acting weird. I've changed the bulbs checked the relays and fuses and all is fine there. Yet I still do not have a left front or right rear turn signal and I do not have a third or left brake light. I've replaced every bulb and still nothing. Last night I noticed a fast clicking at the fuse box under the hood. But couldn't pin point it. I need some insight on this please.
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2017 forgot to add that
The relays in the fuse box are only for trailer signals, the BCM computer controls and powers all your truck's brake lights and signals. So it sounds to me like you either have wire(s) chaffing somewhere, a loose connector, or worst case scenario there is something wrong with the BCM.
Wire chaffing is not uncommon, in fact there are some TSB's and you can check the NHTSA website Recalls | NHTSA and look under manufacturer communications to see if they apply to your truck.
Sometimes it is just a loose connector, the big one behind the driver side headlight has a habit of coming loose for some people, but there are a few that carry wires for the signal and brake lights.
Wiring diagrams will help you find where everything is located, and they are stickied here: 2nd Gen Electronics, Audio, and Lighting
That's where I would start.
Nice C/K there.
Wire chaffing is not uncommon, in fact there are some TSB's and you can check the NHTSA website Recalls | NHTSA and look under manufacturer communications to see if they apply to your truck.
Sometimes it is just a loose connector, the big one behind the driver side headlight has a habit of coming loose for some people, but there are a few that carry wires for the signal and brake lights.
Wiring diagrams will help you find where everything is located, and they are stickied here: 2nd Gen Electronics, Audio, and Lighting
That's where I would start.
Nice C/K there.
The turn signals on my 2017 colorado are acting weird. I've changed the bulbs checked the relays and fuses and all is fine there. Yet I still do not have a left front or right rear turn signal and I do not have a third or left brake light. I've replaced every bulb and still nothing. Last night I noticed a fast clicking at the fuse box under the hood. But couldn't pin point it. I need some insight on this please.
Hey, I had some problems with a buddy of mines colorado, and asked a friend of mine about it. It's a little different in the way of ,if you turn on the left turn signal the four ways come on .
Now I have yet to try this approach because I don't have the truck with me cause it isn't mine but just wanted to tell you in case it works and then won't be able to find this again to reply
UT anyway he told me that it could be corrosion or anything in the prongs where the light connects itself on anyone of the lights he said he had a Pontiac once that he ended up running all new wires on because of lighting issues. And this older fellow that that was a friend of a friend went out one night and had the.m working in minutes where he had been piddling with the issue for better part of six months all he did was brushed the connection to the bulbs with a small piece of fi e sand paper and it was all fixed .
Not definite this will help but figured it will be alot easier to try before being like my buddy and hot wiring them to a toggle first haha . But I hope it all works out for you either way .
Good luck
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