excessive rotor wear?

[02Lightning]

I have 21k on the Denali and the pads are good. I've noticed lately that the rotors have excessive grooves in them. I mentioned this to the dealer and they claim it's from salty roads in the winter time and the materials they use for the rotor. I have a hard time believing this because none of my other vehicles are like this. Anyone else notice this?

 

[Modded]

Same over here. The cheap rotors need replacing before the pads do.

 

[07Burb]

go get yourself some good quality rotors and this shouldn't happen. I've had issues in the past with "GM issued" rotors

 

[02Lightning]

go get yourself some good quality rotors and this shouldn't happen. I've had issues in the past with "GM issued" rotors

This shouldn’t happen with the stock rotors and I feel GM should replace them, not me. I have a Jeep and I put the cheapest rotors I could find on it and it doesn’t do this.

 

[GM Customer Service]

I have 21k on the Denali and the pads are good. I've noticed lately that the rotors have excessive grooves in them. I mentioned this to the dealer and they claim it's from salty roads in the winter time and the materials they use for the rotor. I have a hard time believing this because none of my other vehicles are like this. Anyone else notice this?

02lightning,

If you have not already done so, I encourage that you speak with GMC Customer Assistance. They will be able to let you know if there is anyway you can get your rotors replaced at no charge to you. Here is the number to GMC Customer Assistance 800-462-8782. Their hours of operation are 8AM-9PM ET Monday-Saturday.


Thank you!


Elizabeth, GM Customer Service

 

[Modded]

Elizabeth I tried getting the dealer to replace mine but they said its normal wear and tear!!
What type of car has completely heat damaged (warped) rotors at 12000 miles when I first noticed it and told them?? Now I have double the miles and the rotors are in their last days of functional use.
And even if they did replace it, they will do so with the same useless design that will eventually have the same fate, just like the door lock actuator issue.

 

[blueflamed03]

NBS here, 96,000 miles, still look great

 

[07Burb]

On original rotors?

 

[2 E L O]

I have 74k on my original 2007 rotors and they're still in perfectly good shape...

 

[blueflamed03]

On original rotors?

as far as I know, had 60K when I bought it

 

[Zed 71]

Replaced mine at ~22k due to warping and subsequent shimmy during braking. Upgraded to EBC and this was one of the best mods IMO. I go camping a lot in the mountains and wanted secure brakes with no fade.

 

[doubletapdrew]

The OEM rotors on the NNBS SUVs are complete garbage. If you don't warp them while torquing down your wheels you'll do it under normal driving.
When I replaced mine I went with EBC Sport rotors and Hawk pads in the front, OEM rotors and pads in the rear (didn't realize OEMs were so bad when I replaced those but the rear doesn't do much of the braking anyway). The cost of the EBC rotors and Hawk pads (bought online) was the same as it would have been if I used OEM parts (at slightly over cost since I'm a GM dealer employee).
It was a shock having them warp since I came from a 07 2500HD diesel and I think you'd have to stop a locomotive to wear out the OE rotors on those.

 

[2005yukonxl]

FWIW it seems to be another industry wide issue...over in the Tundra/Sequoia world we warp rotors like crazy over there too. We eat them up on our Charger cop cars well before we ate any up on a crown vic but thats the price u pay to play i guess. they have to cut weight someplace to help the CAFE mandated EPA ratings so i guess rotors would be a place to save some? i dunno. but its getting more and more common with large trucks or big power or large trucks with big power just in normal driving.

 

[02Lightning]

It goes into the shop tomorrow for the hitch cover, we'll see what they say about the rotors.

 

[02Lightning]

Got a call from the dealer and the rear pads have 2mm left and the fronts have 4mm left. He said the grooves on the rotor are due to the hard brake pads. 20k and the dang brakes are wore out on this car!!? And he says the pads are hard, but wouldn't a hard pad last longer? I know this is a heavy vehicle but her last car lasted 60k before doing the brakes. Of course the rotors are not covered.

 

[Modded]

The OEM rotors on the NNBS SUVs are complete garbage. If you don't warp them while torquing down your wheels you'll do it under normal driving.
When I replaced mine I went with EBC Sport rotors and Hawk pads in the front, OEM rotors and pads in the rear (didn't realize OEMs were so bad when I replaced those but the rear doesn't do much of the braking anyway). The cost of the EBC rotors and Hawk pads (bought online) was the same as it would have been if I used OEM parts (at slightly over cost since I'm a GM dealer employee).
It was a shock having them warp since I came from a 07 2500HD diesel and I think you'd have to stop a locomotive to wear out the OE rotors on those.

Agreed!
Plus mine were nasty rusty at 5000 miles I felt like changing them jsut for that. Bro has 36000 miles on a R/T charger and the rotors look brand new with no grooves or rust.

---------- Post added at 11:08 AM ---------- Previous post was at 11:06 AM ----------

Got a call from the dealer and the rear pads have 2mm left and the fronts have 4mm left. He said the grooves on the rotor are due to the hard brake pads. 20k and the dang brakes are wore out on this car!!? And he says the pads are hard, but wouldn't a hard pad last longer? I know this is a heavy vehicle but her last car lasted 60k before doing the brakes. Of course the rotors are not covered.

The dealer is next to useless on this issues. They never admit design issues unless its a safety hazard like the heated washer fluid recall.