Installing "2021 PPV" style 6-Piston Brembo Front Brakes on a 2007 Yukon Denali

[MWD_CTSV]

Well since I couldn’t find help anywhere, I just brought the caliper to the hardware store to find what the thread size was. It’s 3/8-24 for anyone needing to know. The older banjo bolts are m10x1.5x23mm

The correct thread size is 10MMx1 for the 2022 PPV calipers.
3/8-24 is the metric equivalent of the about 9.525x1.058.

It will still fit because the diameter is smaller and the pitch is close, but it will gall the aluminum threads on the caliper under proper tightening torque. Some the bolt threads will be in contact with the upper groove, and the other end will be in contact with the lower groove (no clamping effect) and the rest will be floating. That seems very dangerous.

 

[apex944]

I went through this entire thread and did not see this question...apologies if I missed it.
The PPV calipers on RockAuto and the GMC Brembo option are clearly not the same caliper.
I'm leaning toward the PPV due to costs but the other factory system would be warranteed.
My question is... in what ways are these 2 brake systems different?

 

[petethepug]

The PPV calipers on RockAuto and the GMC Brembo option are clearly not the same caliper.