Brake issue - Pontiac GTO Forum
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post #1 of 6 (permalink) Old 02-17-2015, 10:08 AM Thread Starter
 
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Brake issue

When I first purchased my 04 I had a shudder while braking. After searching many forums I found the brakes would most likely be the cause. So I changed brakes & radius Rod bushings at the same time. Well the shake went away but since I switched from a cross drilled rotor to advanced brand factory brakes I had crappy stopping power & it felt like I had little to no brakes after bleeding them several times. So I decided to upgrade to 05-06 brakes for a while this worked out great. But the shudder came back just not as servere. Over time it got worse. I had my rotors turned (just be fronts) & when coasting to a stop I barely feel them. But when I slam on the brakes from that 60-40mph range man it feels like the car is going to shake itself apart. I think it's the crappy OE brakes & I need to upgrade to a better type however I know it can be the tie rods as well however since this problem changes each time I do something with the brakes it's doubtful. Any advice? I refuse to take it to the track until this safety issue is fixed for good. Any advice would be appreciated thanks.
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post #2 of 6 (permalink) Old 02-17-2015, 07:48 PM
 
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Check the rear rotors too. I had very bad shake on my box truck from rear rotors. I use dial indicator before i start changing or resurfacing. I don't think stock ones are crappy. never had problem with them
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post #3 of 6 (permalink) Old 02-17-2015, 08:47 PM Thread Starter
 
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Thanks I'll be sure to check my rear brakes
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post #4 of 6 (permalink) Old 02-17-2015, 09:17 PM
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I've had OE '04 brakes and the last 6 years OE '05 upgrade with no issues. It isn't because they're OE. One other thing to check is your wheel lug nuts. They should all be 95-100 ft/lb tightened in a star pattern. Improper torquing can cause shake.

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post #5 of 6 (permalink) Old 02-19-2015, 09:31 AM
 
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As Svede said, loosen the lug nuts and torque them alternating every other lug nut. If shake still exits, check wheel studs (loose on hub) and bearings. Just my $.02


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post #6 of 6 (permalink) Old 02-23-2015, 01:35 PM Thread Starter
 
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Okay, so after checking everything I found that my LR rotor was serverely warped. That my mess up I should've had it turned when I purchased it. That has greatly helped the wobble but it's still there. So when getting the car back on the lift we found that it has a bearing going bad on the LF. So I'll have to purchase that & it should completely eliminate the vibration from 60-40mph.
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  Pontiac GTO Forum > The 2004-2006 GTO > Drive train, suspension, alignment and brakes.

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