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#1
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05 Silverado front brakes are dragging
I'm having a problem with the front brakes dragging or sticking. First I changed
the front calipers, rotors and pads but both calipers are still dragging. I can open the line from the master cyl to bleed of and it frees the brakes and allow it to be driven again untill I apply the brakes a couple times and then the dragging is present again. By this time im thinking it must be the master cyl so I changed it and the brake booster. The brakes are still dragging so I changed the front rubber lines. I have also tried disconnecting the abs electrical connections but that hasn't helped. What is the problem? I have spent a lot of time and money but no positive result as of today. Joe |
#2
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Have you checked the proportioning valve?
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Remember no one is perfect. Everyone's butt has a crack in it! |
#3
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I couldn't find a proportioning valve. They may not have one on the ABS equipped trucks?
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#4
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I may be wrong, but do the pads set inside the frame that is bolted to the steering knuckle, then the Caliper slide over the pads? I forgot as my wife sold her ‘03 a few years ago. But I remember I had to actually clean the corrosion up with a file as a wire brush wouldn’t even budge the rust. The pads kept hanging up in that frame. Just a thought
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71' GTO -original 400/4-speed/3.23 posi 13.95 @ 102.1 on street tires @ 4055lbs. ‘63 LeMans- ‘69 400 w/ original transaxle. 2.69 gears. |
#5
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might be time for hoses ..... just went thru this with my motorhome
1988 454 33 000 miles was it doing it b4 you did the work ? |
#6
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This isn't an uncommon problem after searching the net a bit. I copied and pasted another 05 owner that sounds like the same situation as yours.
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Brad Yost 1973 T/A (SOLD) 2005 GTO 1984 Grand Prix 100% Pontiacs in my driveway!!! What's in your driveway? If you don't take some of the RACETRACK home with you, Ya got cheated Last edited by Sirrotica; 07-19-2020 at 07:04 PM. |
#7
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Thanks everyone for the replies. I have replaced the booster and master cyl also because of the brake fluid in the booster. I may try a another booster with the adjustable rod
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#8
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Do you have a part number and brand name for the booster with the adjustable rod?
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#9
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Quote:
My personal take might be to try a shim/shims on the firewall to get some extra travel for the brake pedal. Or perhaps between the booster and MC. It would accomplish the same thing as an adjustable push rod. Evidently the system is quite close to not having enough clearance as it was designed. As the truck gets miles on it the balance changes the wrong way causing this residual pressure due to too little/reduced travel of the components. I personally have never worked on this problem, just getting some feedback from owners that have run into the problem, tried all the obvious fixes as you have and found out the problem is in the area of the booster. Rock Auto has a bunch of them with notations, here's the link: https://www.rockauto.com/en/catalog/...e+booster,1884 |
#10
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thanks I will try to fix the problem sometime this week and post the results here. Joe
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#11
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I drove an 03 GMC 2500HD for 10 years. Had the same problem of dragging brakes. Always bought NAPA brake components. It was the caliper bracket in my case. NAPA guys said for 95% of the customers with issues, the brackets solved them. Already mentioned here I know, but first hand experience, that's what fixed my issue. When you replace the calipers, buy them with the brackets. And of course, always check brake pad fitment prior to mounting. File the ears of the pad is they wont smoothly glided in and out prior to lubing them up.
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. Mark S . Who needs nice and pretty, when you can have mean and nasty? KRE Aluminum headed 463CID 73 LeMans. Used to run 10.6x @ 124.55. 3700lbs . So much for 2020...shootin for 9s in 2021...and in 2022 apparently.....looks like 2023 as well. >>My 73 Build thread |
#12
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Mark S,
Is the caliper bracket you refer to the same as some of the asian cars that have 'floating' pins that are encased in grease? Those are known to dry out and get seized. They will drag, but mostly cause rapid premature pad wear. Don't know but the owner would notice difficulty getting new pads to fit in some cases, though. I once had an experience with an '86 Chrysler FWD that all four wheels bound up from a miss adjusted rod in the power booster. That took me a couple of days to figure out. |
#13
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Quote:
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71' GTO -original 400/4-speed/3.23 posi 13.95 @ 102.1 on street tires @ 4055lbs. ‘63 LeMans- ‘69 400 w/ original transaxle. 2.69 gears. |
#14
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I just took a late night drive and the brakes started to drag bad I backed the master cyl nuts of about 3 full turns and the truck about ran off to leave me alone! I will shim it this week and hopefully be done with it if I can't find a booster with the adjustable rod.
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#15
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I 100% agree with 67drake and 73LeMans. The pads slide in and out in a small track. There is a shim in that track and the pads slide within the shim. A small buildup of rust happens under the shim. This compresses the ends on the pads preventing them from sliding.
Remove the caliper bolts and set it aside. Then remove the bracket that holds the caliper. If you have a bench vise place it in there. Take a rough file edge or something similar and clean up that groove that the pads slide in. You can also put some brake grease or small amount of anti seize in the grove before you put the shims back in. Also just so you know I believe most parts places carry these for about 20 bucks each. They will want your old ones for a core. I have been through this and I bet this is your issue. Good luck. Paul
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I never met an old car that I didn't like. |
#16
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thanks Paul I replaced the caliber brackets when I installed the new calibers and pad fit was good I believe its the booster but I won't know until later this week and I will post the results. Hopefully all this information will be helpful and save someone a lot of labor and money. I'm already around 700.00 in this little project doing the labor myself.
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#17
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Can you tell us more about the truck? Is it a crew cab or heavy duty, 4 wheel disc brakes or front disc rear drum etc?
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Remember no one is perfect. Everyone's butt has a crack in it! |
#18
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My '02 Silverado had a similar issue on the rear calipers. The brackets have a coating that swells when rust develops under it. Pealing the coating off and blasting the rust off the area where the anti-rattle clips sit, and lubing with caliper grease cured mine (for now).
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Monty Frerichs B&M Machine Box Elder SD |
#19
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The truck is a 2005 single cab 4 wheel drive 5 speed with the 4.8 front disc and rear drum
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#20
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This:
Quote:
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“Nothing in the world can take the place of persistence. Talent will not; nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will not; the world is full of educated derelicts. Persistence and determination alone are omnipotent. The slogan Press On! has solved and always will solve the problems of the human race.” ― Calvin Coolidge |
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