4 Piston Big Brake Upgrade from 2019-20

[Rocket Man]

Got the new brakes installed today. Took a few miles to break in the AC Delco pads on the coated Duralast rotors. But once they set, they worked great. I did several mixed speed stops and threw in three or four panic stops to break the pads in and the feel got better and better.

Added the Stoptech braided lines, too. Much firmer pedal and everything feels sturdy and smooth so far.
I used regular flat washers to space the calipers evenly over the rotors. The washers didn't have the exact thickness I wanted to make it 100% even, but I will correct that asap. I'll let everyone know the size.

Overall, this was super simple for me on my 2010 Z71 and I highly recommend the upgrade. Just get the right parts, don't use anything beyond a single washer per bolt for spacing the calipers, and bleed the brakes very very thoroughly. I can't emphasize the last one enough.

All I did for this to work on my specific Tahoe was replace the calipers, pads, brake hoses, four washers total for the calipers, and I went with replica Trail Boss wheels. Research the factory offset of those wheels and spoke clearance to determine what wheels you can use, but I wouldn't get into the business of using wheel spacers. Pet peeve of mine and I think those things are dangerous, but thats just me. Buy the right wheels or don't do this uograde until you can afford to buy the right wheels. Anyhow, good luck and give a shot. It's worth it.



Sent from my SM-G960U using Tapatalk

That’s great advice about the wheels but having to buy new ones to fit the brakes kinda defeats the savings over just buying Wildwoods to start with. They fit normal NBS wheels 20” and up. Plus they’re way bigger and prettier. So I guess my point is to try the caliper that’s being sent around and if your wheels fit then you’re good otherwise it’s not worth it IMO unless you’re already in the market for new wheels.

 

[Dantheman1540]

That’s great advice about the wheels but having to buy new ones to fit the brakes kinda defeats the savings over just buying Wildwoods to start with. They fit normal NBS wheels 20” and up. Plus they’re way bigger and prettier. So I guess my point is to try the caliper that’s being sent around and if your wheels fit then you’re good otherwise it’s not worth it IMO unless you’re already in the market for new wheels.

I totally agree it's not worth buying different wheels for. Any chance we can bother you into doing some super science brake stomping with the brakes you have? Obviously wouldn't be apples to apples but if it stopped as quick as mine I'd be pretty impressed. Since you have 24s, denali interior and awd which I'm sure added 500-1,000 lbs plus you are running more of a general purpose highway tire if I remember correctly.

Just curious.

 

[Dantheman1540]

So I feel we have the front upgrade nailed down, what about rears? What rear calipers do the 2020+ trucks have? Really not looking for crazy braking improvement as I know the rears do much less than the fronts. I'd like a similar looking caliper, where you don't see the ugly pad because of the lack of front face pistons.

I see to be having trouble finding much info on the rear brakes of the new trucks.

 

[91RS]

The rear brakes are the same 2007-2018/2020.

 

[FrankU]

X2 for a rear brake upgrade. I like rear brake bias , gives me more control of a balanced vehicle when a critical situation pops up.

 

[FrankU]

PS......whadda ma going to do with half a lab coat ?

 

[lucas287]

So before the hump was ground down these wheels would not clear without a 1/4" spacer which is really nothing.

Would you happen to know the width and offset of those wheels? Trying to determine if my high country 20s will clear. They're 9" wide with +27 mm offset.

 

[Dantheman1540]

The rear brakes are the same 2007-2018/2020.

What about 2021 and 2022?

PS......whadda ma going to do with half a lab coat ?

We can share it, I'll take weekdays you can have custody on weekends.

Would you happen to know the width and offset of those wheels? Trying to determine if my high country 20s will clear. They're 9" wide with +27 mm offset.

 

[fasteddy]

I have a 19 sub with OEM 6P in the front and a 1P in the rear.
At least my Tahoe had OEM 2P in the rear.

 

[91RS]

What about 2021 and 2022?

I don’t see how it would be an advantage as they’re still one piston calipers. They have an electronic parking brake that no longer uses the drum-in-hat design so even if they would work you’d be giving up your parking brake.