2012 Avalanche LTZ. Two yrs ago I found out about the Ferritic nitrocarburized rotors. I thought I bought them (only the front for now) only to find out they weren't. I put them on anyway but, I wanted to know where to get them. I hunted and searched, called parts stores, GM dealer parts, and all of them thought I was talking Chinese. Never heard of them. I finally found articles on a hard to find GM link saying they started being standard equip on some GMs 2014? I think. I called the place that does the Ferritic nitrocarburizing for GM and the head guy told me they never treated one for Avalanches (last Avalanche 2013) I believe he said Silverados got them starting in 2014 but didn't know if they fit. I spent a whole day searching and comparing Part numbers and dimensions at auto part stores because if the generic # fit both vehicles the OEM Ferritic nitrocarburized ones would. Well GM wasn't having any of that, they put different part # for the Silverado and refused to update the Avalanche even though the front specs out the same. The back has deeper off set but I just found out the 2016 Tahoe is the same dimensions front and back.
The back brake rotors are now acting up from retirement lack of use, RUST. I still can't find where to buy the Ferritic nitrocarburized ones. HELP HELP HELP Parts people aren't friendly help. I remember back when you walked into a parts store threw it down on the counter and he'd say oh that's a .... and go get it or, find one on the shelf to match. I'm going to get a hold of a guy on (no I'm not telling where) he is selling all four for $10 off a 2016 Tahoe with 36,000 miles because he bought a trailer and thinks he's upgrading to slotted rotors. I don't think so and don't care I want those rotors. I still need to know where to buy new ones and GM dealer people never heard of them. So once again HELP HELP for info where to get them. Thank you if you read this far.