Adjusting Parking Brake On '01 Yukon

[Starrman]

My parking brake doesn't seem to hold the vehicle very well. Is there a way I can tighten or adjust it, or do I need new brake pads on the rear?

[bryanhunt]

What are you trying to hold?

 

The parking brake should be good enough to hold the truck with a light load on a moderate slope. It won't hold a trailer on a steep hill.

 

On the other hand with a 2001 if the parking brake system wasn't overhauled per the tsb it needs to be (since they changed quite a bit of stuff, on the old system it would only take a moment of driving with it on before they were completely shot from what I hear).

[Starrman]

It just doesn't seem to hold real well. Kinda hard to explain, but you know how after you put it in park and release the brake it'll settle or move that little bit?? Well it'll still do that even if the parking brake is set before releasing the brake pedal.

 

Also, I tested it with the parking brake on and put the tranny in drive and released the foot brake and it rolled forward just idling, no gas pedal.

 

Was that tsb a recall or something that the dealer does when its brought in for something else? I just had the ABS system tsb or recall done about 2 months ago. I'll have to check on the parking brake one

[carneyman]

It just doesn't seem to hold real well. Kinda hard to explain, but you know how after you put it in park and release the brake it'll settle or move that little bit?? Well it'll still do that even if the parking brake is set before releasing the brake pedal.

 

Also, I tested it with the parking brake on and put the tranny in drive and released the foot brake and it rolled forward just idling, no gas pedal.

 

Was that tsb a recall or something that the dealer does when its brought in for something else? I just had the ABS system tsb or recall done about 2 months ago. I'll have to check on the parking brake one

 

My '02 does the same thing, makes parking on an incline really bad, specially when you try to shift out of park. If you find anything out let us know.

[bryanhunt]

About all I've heard about is this one http://www-odi.nhtsa.dot.gov/cars/problems...mp;summary=true

 

It of course lists only manuals in the recall. I'm not sure if the parking cog exempts automatics from the nhtsa recall and thats why its not listed. I believe they use the same parking brake systems though (I've been known to be totally wrong too...).

 

 

after a bit more searching I found this info (I copied the pdf from the nhtsa site since it didn't want to link right)

 

http://www.geocities.com/huntfianet/federa...ster_may_06.pdf

 

Of interest was the following:

 

"The remedies were necessary to correct the conditions that cause the friction linings to wear to an extent where the parking brakes can become ineffective in immobilizing a parked vehicle. Similar GM vehicles built on the same platforms with automatic transmissions were not recalled because ODI’s extensive study conducted during the investigation indicated that they had a roll-away event rate less than one fiftieth (1?50) of the rate for the recalled vehicles (equipped with manual transmissions) and that the rate was also similar to peer vehicles with automatic transmissions manufactured by Ford and DaimlerChrysler Corporation. Automatic transmission reduces unattended roll-aways because of the presence of a mechanical ‘‘park pawl’’ that immobilizes the drivetrain when the transmission is placed in park."

[Starrman]

anyone know what this "revised low force spring clip retainer" is or where it goes?

 

Disc brakes aren't too difficult of a setup. I haven't looked at my Yukon's, but I know on my Mustangs the emergency cable attaches to a spring loaded cam/lever at the bottom of the caliper that will engage the brake when rotated/pulled

[pwall]

anyone know what this "revised low force spring clip retainer" is or where it goes?

 

Disc brakes aren't too difficult of a setup. I haven't looked at my Yukon's, but I know on my Mustangs the emergency cable attaches to a spring loaded cam/lever at the bottom of the caliper that will engage the brake when rotated/pulled

I can only comment on 2002 (although my buddies 2001 Silverado is the same), but the parking brake is inside the rotor and works like a drum/shoe setup. It does not move the caliper on the disc brake at all.

Sorry, don't know all the tech terms to use.

[Bish]

You may be able to adjust. you may have to replace the parking shoes. As others have stated, it is a drum brake inside the rotor and is separate from the caliper. There is a clip that holds each shoe in place. The old clip used to fail allowing the shoe to fall away and wear the friction prematurely. The new clip is larger and holds the shoe better.

 

Adjusting is done via a star washer like the old style drum. The problem is you must remove the rotor to get access to the adjuster. Once the rotor is used for a while, there will be a small ridge of metal on the inside of the drum that an make removal very difficult as it catches on the shoe as you remove. I adjust until it is loose enough to allow the rotor to spin but tight enough there is a LITTLE bit of friction. Once I adjust it, I only use the ebrake if I really need it. It is a really poor design in my opinion.