Cable or hose rubbing in left rear wheel well.

[Pawpaw]

Is this the parking brake cable or something else? It is rubbing on what appears to be the brake line guide bracket.



I've already decided to show it to the dealer service department, but I wanted the experts' opinions first.

 

[Pawpaw]

Here is a closer picture that shows the wear. In 11,000 miles it's worn through the rubber boot and is now wearing on the plastic insulation.

 

[rbattelle]

Looks like the parking brake cable to me.

 

[supersonic]

Ditto

 

[Pawpaw]

Originally posted by rbattelle

Looks like the parking brake cable to me.

I'm pretty sure that's what it is, since it's pretty stiff.



I was concerned that it might be a line with brake fluid in it. If so, it would not be good to have a hole appear while I'm driving down the highway.



How does the parking brake work on these trucks? Since they're disk brakes, it sort of rules out the old "cam action against the brake shoes" that drum brakes used.

 

[ThomasLawrence]

How does the parking brake work on these trucks?

Just like any other set of drum brakes



Yep, there's a drum and brake shoes in the rear... of course, they're a tiny little set, maybe 6" or so in diameter, that's used just for the parking brake. The disc brakes do the actual stopping.



Most manufacturers seemed to favor the disc/drum combination in the rear. As far as I know, only GM went with the complex caliper with rotating piston to allow a cable-operated pedal to actuate the rear disc brakes.



-Tom

 

[Pawpaw]

Originally posted by ThomasLawrence

Just like any other set of drum brakes



Yep, there's a drum and brake shoes in the rear... of course, they're a tiny little set, maybe 6" or so in diameter, that's used just for the parking brake. The disc brakes do the actual stopping.

Well duh!



The parking brake on my truck works so smoothly, I had this vision of some kind of setup that forced the caliper pistons out under hydraulic pressure.



The disk/drum setup sounds much simpler and more reliable.



Feel sort of silly now.

 

[nickleinonen]

As far as I know, only GM went with the complex caliper with rotating piston to allow a cable-operated pedal to actuate the rear disc brakes

which model's have that feature?



my pop's got a 99 silverado 1500 and it has the disc/drum rear brake combo. his parking brake shoe is 1 piece and looks like a horseshoe shape...

 

[JRMora]

Originally posted by BobHall

Is this the parking brake cable or something else? It is rubbing on what appears to be the brake line guide bracket.



I've already decided to show it to the dealer service department, but I wanted the experts' opinions first.

I have the same issue on mine. What are people doing about it? Any quick fixes?



Juan

 

[ThomasLawrence]

which model's have that feature? [parking brake integrated with brake caliper]

I'm not even sure to tell you the truth. I do know that my rear disc brake conversion I put on my '99 truck used GM 1-ton rear calipers, which uses a lever arm to actuate the piston. When retracting the piston, you need a special tool to both apply pressure to the piston as well as rotate it as it goes back.



-Tom