Caliper bolt size?

UnderDawg · February 14, 2005

Ok, I was going to replace my front brake pads and ran into a stumbling block. The caliper is held on by an allen or torx bolt, right? What size and which one is it? Help please.

Oh yeah, this is a 99 GMC Yukon.

budhayes3 · February 14, 2005

If I remember correctly it's a T-55 (torx) on my truck (99 NBS)...not sure about a 99 Tahoe though.

mcreyaufmiller · February 15, 2005

I think on our trucks it is a allen, the best way to tell the difference is that an allen is a 6 sided hole, a torx is a star shaped hole. Not sure about which one though, it has been a while since I have been in there.

chevroletmb · February 15, 2005

all nbs truck have either a torx 55 or 18mm heads.

3/8 allen when away with the obs trucks

asepgrad98 · February 15, 2005

if you dont want to buy a T55 you can take the 18mm bracket bolts off then the caliper should slide off of the bracket once the rotor isnt in the way.

UnderDawg · February 17, 2005

Thanks for everyone's advice. I'm going to try and re-tackle this brake job tonight or this weekend. Whenever I have a free moment.

chevyracer · February 17, 2005

Ok, I was going to replace my front brake pads and ran into a stumbling block. The caliper is held on by an allen or torx bolt, right? What size and which one is it? Help please.

Oh yeah, this is a 99 GMC Yukon.

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