No Bright Lights 2004 Chevy Trailblazer

[isaac1943]

Problem: No High Beam Headlights.
I replaced bulbs,
checked small 10 amp fuses.
I switched the HDM black Relay with one next to it and I still have no Bright lights.
I will pay for an answer.
Prax Isaac Arcia

[ProTech]

Ok, you failed to check the proper relay when you switched the HDM relay with the one next to it. There is Headlamp-Hi Relay as well in the underhood fuse block in position #43, so try that one too. There is also a controlling fuse for the Headlamp-Hi Relay you may want to check as well. It is labed COILS and is fuse #14. I would bet either of those is your problem. Trailblazer Headlight Repair

If not, you might want to start by removing the bulbs again and checking the connectors and wiring that go to them. Very often, the terminals have burned up on the connector and the connector needs to be replaced. Since both hi beams are out, this may not be it, but is something to check. Other than that, the high beam dimmer switch can fail and cause this problem, as well as other Body Control Module issues. It's probably the relay or the fuse for that relay, so check those out first.

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[isaac1943]

Thank You so much. I sent a donation for your expert assistance.
Yes the Fuse Relay (if that's what it is called) in the #43 position did the trick. I hnow have bright headlights. I can see. Yaaaaaa. May God Bless you.
Prax Isaac Arcia
praxscapes.com

[ProTech]

Glad to help, and thank you very much for the donation!

[md1]

We were caught in a tornado watch a year ago and had to sleep in our car overnight, so we opened the windows occasionally to let air inside. Rain came in, but we needed the air so we didn't suffocate. Since that time the Remote control of the outside mirrors have been failing. First the passenger door mirror went out that day. Then the Driver side mirror went out. What can I do to fix this without spending $$$$$?

[ProTech]

You probably got some moisture into the mirror switch during the time you had the window open to let air in. This will normally end up being bad for any electronics that have moisture intrusion into them, including any switches.

Luckily for you, you most likely just need to replace the power mirror switch located on the driver's side door panel, right by the window switches. The switch is fairly inexpensive and very easily installed. You just have to pop up the bezel with all the switches in it and then change it out and plug it in.

A bit of side information for you....you CANNOT suffocate inside a closed up vehicle, so there was really no need to lower your windows for air. There is a built in venting system into every single vehicle made so this does not happen, as well as to provide a pressure release when needed (such as when you shut the doors).

[md1]

Wow...thanks for your response. Especially about the suffocation issue. Mind you this was the middle of summer in North Dakota....so it was warm outside...but I was concerned about the suffocation issue with three people and a dog in the car!

But to the mirror controllers...is there a video or picture of what I need to change this out?

Do you suggest parts from the dealer, or other places? Thanks a million for this response. I'll let you know the results on the other issues too! Thanks...

[ProTech]

You can probably only get the switch from the dealership, and would recommend doing so anyway rather than getting anything aftermarket. You just have to lift the bezel with the window switches and mirror switch up (you can pop out the retainers with a small screwdriver) and then change out the switch and plug the new one in. I'll include a pic below for you. Good luck!