Hazard Flashers Stop Flashing When Brake Is Applied - Flaw or Feature?

[cc333]

Yeah, I guess it's a GM quirk.

I forgot to say that it was in me experience that imports had separate turn signals; I've known an 84 Audi and an 82 Volvo, and both had separate turn signal bulbs in the rear end, so I assumed most other European makes were similar, but my statement was overgeneralized, because that isn't necessarily so.

c

 

[Erin]

It's normal...unfortunately.

Good to know. I used to push hard on the button, thinking it was going bad when the flashers would stop flashing.

 

[618 Syndicate]

Yeah, I guess it's a GM quirk.

I forgot to say that it was in me experience that imports had separate turn signals; I've known an 84 Audi and an 82 Volvo, and both had separate turn signal bulbs in the rear end, so I assumed most other European makes were similar, but my statement was overgeneralized, because that isn't necessarily so.

c

You're not wrong. Most imports do.

 

[Z71Hobbs]

Normal on trucks. Burbs don’t do this. For whatever reason.

 

[df2x4]

Normal on trucks. Burbs don’t do this. For whatever reason.

Weird... But true. I just went and double checked my 'burb and sure enough the brakes don't effect the hazards.

 

[cc333]

Interesting. Do the trucks and Suburbans use different column levers and/or brake switches and/or wiring harnesses?

c

 

[MIHELA]

The wiring harnesses to the rear lights are different on the Burb. My dash harness came out of one and I had to do a LOT of repinning and manual consultation to make it work in a pickup.

 

[AK49BWL]

The suburban doesn't have a separate brake light relay. The trucks do. But if the wiring diagrams are to be believed, it's nothing more than a helper relay, and is tied into the column switch AND brake switch. Actually tbh I don't really trust the wiring diagram in this case, because it would appear to indicate a closed loop when activated, a loop that is not possible to deactivate without pulling the fuse. Heh, maybe I should have looked into how it's actually wired when I redid mine.

Diagram in question: https://www.ak49bwl.com/other/wires/1997K1500/Lights-Exterior.pdf

 

[Erik the Awful]

The wiring harnesses to the rear lights are different on the Burb. My dash harness came out of one and I had to do a LOT of repinning and manual consultation to make it work in a pickup.

Weird. My truck's rear harness was garbage and none of the pickups at Pull-A-Part had intact harnesses. I ended up grabbing a rear harness off a Suburban and it was plug-and-play.
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