Pontiac G6 Forum banner
1 - 5 of 5 Posts

· Registered
Joined
·
106 Posts
Discussion Starter · #1 ·
About 8,000 miles ago I got new front and back pads on my car and new rotors on the front. I did this at the dealership bc we actually have a pretty good relationship with them. Recently I was getting vibration. I took my car back since they're the ones that did the work and I thought maybe I needed the rear rotors after all. No. The front rotors had already warped! What?! So they replaced them for free. I do not understand how that could have happened so quickly. I had them put on all the best AC Delco parts they had... I suppose what came on the car. Whatever was considered the best.
The mechanic working on my car said that he thinks the rotors must have been damaged or dropped before being put on my car and they must have already had a hot spot.... and that changing them out should make it all better.

Well, the vibration is gone, but lately after driving around some my brakes have been grinding. the thing is it only happens a couple times and I can't seem to recreate it. And it's not when I'm pulling out of my driveway after the rain or something like that.... I know brakes can grind then. So what would make this PERIODICALLY happen? what would cause 'em to grind at all? What should I do? I'm calling the dealership tomorrow, but I'm really tired of going back and forth bc they are definitely not convenient.

Also, about the transmission.... I have the V6 w/ the Manual option. It's likely that I, myself, have caused problems bc I have been in M before and not realized it. But anyway.... what happens is that say I'm going 40 mph and I have to let off the gas without braking, then I reapply the gas (I suppose quickly)... the transmission seems to skip or hesitate. Also around 8,000 miles ago or less I had the transmission area cleaned because I was told it was something blocking the censor... like dirt and something about the air-intake or out-take and the censor timing being off. It made sense and everything got better. but then the problem came back. I took it to the dealership again and they ran updates. they could never simulate the problem and i haven't had it happen since. The thing is, before I dropped it off I was driving there and got on the Interstate and was really able to gun it on my car and I hadn't done that in a while. When I did it, it seemed like the transmission did it's biggest "thinking" slow move hiccup thing that it had ever done. But also I was going fast and my music was loud. I kind of feel like maybe there was debris and it blew it out and solved the problem? What do you all think? And if that is the case... why is so much debris getting in there and what can i do about it???

sorry I wrote so much. btw I live in Nashville. I have a lot of city driving and rush-hour Interstate driving. People here are IDIOTS.

Thanks.....
 

· Varsity Squad
Joined
·
751 Posts
The pads may have worn abnormally and did not get replaced when your new warped rotors did. May also have to do with how hot you get your brakes. If you want quiet brakes, the quietest pads I have ever put on a car was the NAPA Adaptive 1's. As for your AUTOMATIC TRANS, I have no clue, manual transmissions means you have to push in a clutch pedal, and shift. Those tiptronic trans have nothing on a real manual!!!
 

· Lifetime Member
Joined
·
3,805 Posts
The brake grinding seems to happen at slower speeds going down hill... that's just one example, I suppose.

Please, can someone offer some ideas?
You say grinding, that is just how it sounds, right? I had that problem with cheap lifetime pads from a discount parts store. IMO, I would hardly believe a dealership used "the best" parts, it seems more likely they used the cheapest parts. Lifetime pads are like rocks and I would guess thats what you now have making the grinding noise. Of course I can't hear it and I could be way off base but thats my "two bits" on it.
Transmission, ???? not clue, sorry! (Yet :rolleyes:)
 

· Registered
Joined
·
123 Posts
one the topic... i just put a new set of pads on the front. they were great for about 4 days and then started sqeaking like hell, now it's gone from squeaking to the occasional grinding, AND now there's a large vibration on breaking from moderate speeds... i'm thinking the rotors are warped, but why would that be? and what is the recommended rotor/pad for these cars? suggestions, i might replace them this weekend.
 
1 - 5 of 5 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top