Pathetic brakes on '03 Yukon XL

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Jeff d

Member
Joined
Mar 9, 2013
Posts
40
Reaction score
1
So, I bought an '03 w/ 75,000 about 3 months, 5,000 miles ago. It's in impeccable mechanical condition but the brakes take a whole lot of pedal pressure to stop relative to every other vehicle I've driven. It does NOT have hydroboost. It has 4 wheel disks (Not sure if that's standard or comes with a certain package). I wouldn't describe the pedal as "soft" or "mushy" it just takes a decent amount of extra effort vs. what I consider "normal" even for a casual stop.

As a point of reference the state owned '04 Ford E250 passenger van w/ over 100k that I occasionally drive at work stops better than my Yukon with less pedal pressure. Also, my dad's '07 Silverado stops much better with less pedal pressure too. My '04 Dodge 1/2 ton with 20s and larger tires was light years better than this.

The vacuum booster is working to some extent because it's not like I have no power brakes at all. I don't hear any vacuum leaks around the booster. The pads are less than 50% worn and the rotors look fine. I've removed and cleaned the master cylinder reservoir and flushed/bled the brake system, replacing the fluid with fresh synthetic DOT 3+4 fluid with a slight improvement but still it's about the worst modern vehicle I've driven. There are no fluid leaks anywhere.

When finances permit I'm planning on a PPV/NNBS front brake swap but I'm just wondering if there's an issue here that I need to resolve first. I drive like an old man so it's not really a huge deal but I want every bit of braking power I can get in a panic stop scenario. I recently put 33s on it and obviously that didn't help the situation.

So, does this sound like par for the course for this year/model? Or do I need to troubleshoot further?
 
Last edited:

ScottyBoy

Full Access Member
Joined
Jun 27, 2010
Posts
2,687
Reaction score
2,041
Location
Shreveport, La
We can't tell for sure if something is actually wrong, or if it just seems that way to you because it takes more pedal pressure than other vehicles. I know my Suburban was that way with the stock brakes. Other vehicles that I drove I kept locking up the brakes because I was so used to the pedal pressure needed to stop my Burb. I drove a 2010 Tundra to go pick up a boat for work. And it took me a while to get used to the brakes. Very little foot pressure is needed, so I kept doing quick jerky stops. Lol. I quickly got used to it though.
Anyways, I noticed that my brakes work a LOT better after upgrading to drilled and slotted rotors with Wagner Thermoquiet Ceramic pads on all 4 corners. It doesn't stop like a Tundra, but its a LOT better. Only way I think it will stop any better is with an upgraded brake booster and bigger calipers or a big brake kit.

---------- Post added at 10:36 AM ---------- Previous post was at 10:33 AM ----------

Also keep in mind that any upgrades to bigger brakes like the NNBS brakes you mentioned will need at least a 17" wheel to clear the brakes. If you already have 17" or larger wheels then good. If you still have the stock 16's, then you need to go bigger.
 
OP
OP
J

Jeff d

Member
Joined
Mar 9, 2013
Posts
40
Reaction score
1
It sounds like mine are probably normal then.

Yeah, I went to 17s when I got my new tires 1) because I thought my stock 16s were ugly and 2) in anticipation of the ppv/nnbs brake upgrade.
 

ScottyBoy

Full Access Member
Joined
Jun 27, 2010
Posts
2,687
Reaction score
2,041
Location
Shreveport, La
Also, I know for a cheap upgrade you can install 05-06 Silverado brakes. Not sure what all you would need if you got NNBS brakes, but I know for sure that the 05-06 Silverado pads and rotors, calipersand caliper brackets are all you will need. And it all bolts right on with ko modifications.
 
OP
OP
J

Jeff d

Member
Joined
Mar 9, 2013
Posts
40
Reaction score
1
Also, I know for a cheap upgrade you can install 05-06 Silverado brakes. Not sure what all you would need if you got NNBS brakes, but I know for sure that the 05-06 Silverado pads and rotors, calipersand caliper brackets are all you will need. And it all bolts right on with ko modifications.

The GMT900 swap requires calipers/brackets (usually sold together), pads and rotors. The current brake lines can be reused but I'd go SS while I'm at it.
 

amaturejoe

TYF Newbie
Joined
Jun 3, 2013
Posts
11
Reaction score
0
The brakes on my 2001 Yukon XL are the same way. I have replaced pads and rotors a couple times over the life of the truck and it has allways been the same (never upgraded though). I think it is just the way the standard brakes are. Never had a problem stopping though, just takes some getting use to.
 

M Hankel

Full Access Member
Joined
Apr 14, 2012
Posts
445
Reaction score
8
Location
Vancouver, WA
I would like to know this also. I have a 2000 NBS and it stops really good. But my gf's 2002 Tahoe takes way more pedal effort and both rigs have 22's. Eventually Im going to upgrade my front rotors/pads so I migbt just throw my old ones on hers. Would still like to know what the real issue is with urs though.

Mike
 

Forum statistics

Threads
138,111
Posts
1,999,352
Members
103,036
Latest member
Durobans
Back
Top