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Crappy E-brake performance. What brake shoes do I need?

Supreme Pizza

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Supreme Pizza Senior Enthusiast

Supreme Pizza

Posted
Posted

I have a 2002 Suburban LS 1500 with the 5.4 and its a 4x4 automatic.

 

The rear parking brake shoes don't appear to be worn out, but I'm constantly fighting with them. They never hold the vehicle very well at all on a hill, and it puts strain on the parking gear in the trans. I have tried adjusting them as tight as I can without them rubbing, but after a few days, they are not working very well. I tried putting thread-locker on the adjusters to prevent them from backing them selves off. That helped alot, but they still are not very good. I want to replace the adjusters, shoes and all the associated hardware except the rotors. Im seeing two different types of shoes available for this rig. Some shoes have two clips and some shoes have one clip. Something about the GVW? The shoes are not interchangeable. What type of shoes do I buy? The one clip or two? How do I find out using the VIN#? Any info on this would be greatly appreciated. Thanks.

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Bob D Enthusiast

Bob D

Posted
Posted

My '03 lost parking brake holding power. Wouldn't hold with brake on, in gear idle, no throttle.

Had to both:

Adjust shoes. (Don't threadlock the adjusters.)

Adjust parking brake cable. (They stretch over time, especially if used often.)

Can't comment on clip qty., but your auto parts store should give you the correct ones.

If in doubt, take home both, return the incorrect ones.

Don't waste money on expensive / premium shoes.

Supreme Pizza Senior Enthusiast

Supreme Pizza

Posted
  • Author
Posted

I replaced the cable, and have adjusted the e-Brake shoes several times. I can get the shoes for $20 with free delivery and the hardware kit for $10. (all from Amazon). Im wondering if the rotors needs to be resurfaced or replaced. What a shitty design! Why did they build it this way!

swathdiver Senior Enthusiast

swathdiver

Posted
Posted

I bought new AC Delco (171-0992) for my 2009 which is a 1500 4x4. Been trying to put them on as my parking brake doesn't hold at all but now it seems this will have to wait until after Irma.

Bob D Enthusiast

Bob D

Posted
Posted

...Im wondering if the rotors needs to be resurfaced or replaced. What a shitty design! Why did they build it this way!

Can't imagine rotors having anything to do with the issue.

Re: crummy design: Having to pull the rotor to adjust parking brake is beyond dumb.

Why no plugged hole in backing plate so as to have ability to adjust with everything in place (as mfr.s have been doing for >60 yr.s.?

Supreme Pizza Senior Enthusiast

Supreme Pizza

Posted
  • Author
Posted

I'm not sure whats wrong. I agree that the rotors are probably fine, but i'm running low on options. Maybe i'm expecting too much out of the e-brake..... Image a 2002 Suburban on a very VERY steep hill, with 1,000 pounds of cargo. Should the e-brake be able to hold the vehicle in place by itself? I have read many posts online about people having similar issues with this.

Bob D Enthusiast

Bob D

Posted
Posted

.... Suburban on a very VERY steep hill, with 1,000 pounds of cargo. Should the e-brake be able to hold the vehicle in place...

Can't comment on that specific scenario, but mine will hold while in gear under a fair bit of throttle.

sefiroxx Enthusiast

sefiroxx

Posted
Posted

It's the cable. I ran into the same problem with my 01 4x4 Burb. Been replacing the various sections of the cable to eventually achieve holding ability.

 

Sent from my XT1053 using Tapatalk

Supreme Pizza Senior Enthusiast

Supreme Pizza

Posted
  • Author
Posted

Hmm. I had not considered that. So your saying that the cables are stretching. I replaced the cable that runs from the equalizer to the front of the rig, because it broke (#8). There are a total of 4 cable sections. Did you replace all 4 sections, or just a couple? Which sections made the biggest difference for you?

 

Obviously this Google picture is not accurate to the vehicle, however it does show the different sections of the brake cable system.

 

970314MH04-011.JPG

Bob D Enthusiast

Bob D

Posted
Posted

....Do you feel that it would work well enough to be an emergency brake? Like if your hydraulics completely failed?

Well, which is why they're now referred to as "parking brakes" (vs. emerg. brakes).

Anecdote: My hydraulics failed once (well documented crummy brake line issues). It sure helped slowing down.

I would say at highway speeds, it would be more of a smoky re-entry than a quick stop.

Better than nothing...

repairman54 Enthusiast

repairman54

Posted
Posted

One of the rear cables could be bound up so only one brake is actually holding the truck.

That shot of your brake line rust says to me cable can very well be bad.

Been down the rusty line road myself.....

RPO code label in the glove box will tell you what GVW brake package your truck was built with.

Supreme Pizza Senior Enthusiast

Supreme Pizza

Posted
  • Author
Posted

Thanks sefiroxx, you nailed it. Even thought the right rear cable appeared to be working correctly, there was a hidden spot that was worn though and badly rusted. Once off the vehicle, the cable would not move inside the sleeve by hand.

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