4 Piston Big Brake Upgrade from 2019-20

[Dantheman1540]

But didn't the H2 use the 4L65 until 06? I know the 1500 HD came with the 4L80. The H2 was all sorts of mixed up, haha.

Wow, I didn't know they did a 4l65 what a POS lol. The H2s are so strange, I can't stand their interior but some options came with 4.56 gears and lockers which is pretty nice.

 

[1BADI5]

I think this might be the route i will go........unless someone else wants to be the 99-13 guinea pig???

GM Truck/SUV 4 Piston C7 Rear Big Brake Bracket Kit

This big brake bracket kit allows you to upgrade the rear brakes on your 99-18 Silverado, Tahoe, Escalade, Suburban, Tahoe, Sierra, etc. to C7 Corvette or 6th Gen Camaro rear 4 piston Brembo calipers.

ctsvbrakeswap.com

 

[Fjs0001]

Be careful ordering from gmpartsdirect.com aka Flow Chevrolet. Their shipping is extremely slow and they'll sell you parts even if they don't have them, making you wait months for your parts. They'll charge you a 35% cancelation fee if you try to cancel the order.

 

[1BADI5]

Be careful ordering from gmpartsdirect.com aka Flow Chevrolet. Their shipping is extremely slow and they'll sell you parts even if they don't have them, making you wait months for your parts. They'll charge you a 35% cancelation fee if you try to cancel the order.

I have not ordered from them in ages; back in the day they were real good.

 

[Dantheman1540]

I think this might be the route i will go........unless someone else wants to be the 99-13 guinea pig???

GM Truck/SUV 4 Piston C7 Rear Big Brake Bracket Kit

This big brake bracket kit allows you to upgrade the rear brakes on your 99-18 Silverado, Tahoe, Escalade, Suburban, Tahoe, Sierra, etc. to C7 Corvette or 6th Gen Camaro rear 4 piston Brembo calipers.

ctsvbrakeswap.com

What's the total cost of that swap? Looking at Gmparts it looks like it would be well north of 1k unless I'm looking at the wrong stuff.

Be careful ordering from gmpartsdirect.com aka Flow Chevrolet. Their shipping is extremely slow and they'll sell you parts even if they don't have them, making you wait months for your parts. They'll charge you a 35% cancelation fee if you try to cancel the order.

Thanks for the warning I hate websites like that! I use their parts lookup a ton but don't think I've ever ordered from them, usually just google the part number when I find it and find the cheapest option.

 

[1BADI5]

I'd more then likely play the waiting game on the rear upgrade IE the calipers.......theres no shortage of wrecked C7s out there. Worst case I will save some pennies up to get some new calipers.

The parts list is not to deep:
This kit requires-

• Both rear C7 Corvette non-Z51 calipers (CTS-V, C6 ZR1, and other calipers will not work)
• C7 Corvette base Rear Brake Pads
• C7 Corvette base Rear Brake Pad Hardware kit
• 2014-18 GM Truck/SUV factory rear rotors
• 2014-18 GM Truck/SUV factory Brake lines and banjo bolts

 

[Dantheman1540]

I'd more then likely play the waiting game on the rear upgrade IE the calipers.......theres no shortage of wrecked C7s out there. Worst case I will save some pennies up to get some new calipers.

The parts list is not to deep:
This kit requires-

• Both rear C7 Corvette non-Z51 calipers (CTS-V, C6 ZR1, and other calipers will not work)
• C7 Corvette base Rear Brake Pads
• C7 Corvette base Rear Brake Pad Hardware kit
• 2014-18 GM Truck/SUV factory rear rotors
• 2014-18 GM Truck/SUV factory Brake lines and banjo bolts

I guess not needing the vette rotors saves a bit, I'm gonna see if I can find some used calipers now.

 

[1BADI5]

In my case with a '10 the rotors are the same size as the 15-20 SUVs. Only thing left to confirm is the brake lines (90% sure my '10 lines will work)

So I will just need calipers, pads & hardware and the adaptor brackets.

 

[Rocket Man]

I think this might be the route i will go........unless someone else wants to be the 99-13 guinea pig???

GM Truck/SUV 4 Piston C7 Rear Big Brake Bracket Kit

This big brake bracket kit allows you to upgrade the rear brakes on your 99-18 Silverado, Tahoe, Escalade, Suburban, Tahoe, Sierra, etc. to C7 Corvette or 6th Gen Camaro rear 4 piston Brembo calipers.

ctsvbrakeswap.com

Just gotta take that Corvette logo off the calipers unless it doesn't bother you. That always drives me crazy. My neighbor has a couple vehicles like an S10 with Corvette center caps. But then he's that guy who puts fake SS badges and big white PROXES stickers on his tires. He's got some nice vehicles but then he does stuff like that. And he just bought an SSr that he thinks is cool. The first thing he did was put some big white Goodyear Eagle letters on the tires. I digress.

 

[1BADI5]

Just gotta take that Corvette logo off the calipers unless it doesn't bother you. That always drives me crazy. My neighbor has a couple vehicles like an S10 with Corvette center caps. But then he's that guy who puts fake SS badges and big white PROXES stickers on his tires. He's got some nice vehicles but then he does stuff like that. And he just bought an SSr that he thinks is cool. The first thing he did was put some big white Goodyear Eagle letters on the tires. I digress.

Doesn't really bother me being it's a GM product. I might get them powder coated another color.

I just wanna stop fast

 

[Fjs0001]

This is on a 2005 Cadillac Escalade

I test fitted the calipers and they rub on the stock 17" rims. I could probably grind the calipers down, but I already have some other wheels that I want to run.

I picked up some stock 22" rims from a newer Escalade awhile back.

The calipers rub on the spokes.

Here is the caliper mounted on my old stock rotors. My new rotors haven't arrived yet. I'll need to use washers to center it.

I'm going to buy some 1" wheel spacers for the front. I want to run 33" tires, so I'm going to buy lift torsion keys for the front and spacers for the rear.

 

[the_tool_man]

This is on a 2005 Cadillac Escalade

I test fitted the calipers and they rub on the stock 17" rims. I could probably grind the calipers down, but I already have some other wheels that I want to run.
View attachment 345305

I picked up some stock 22" rims from a newer Escalade awhile back.
View attachment 345306
The calipers rub on the spokes.
View attachment 345307

Here is the caliper mounted on my old stock rotors. My new rotors haven't arrived yet. I'll need to use washers to center it.
View attachment 345309View attachment 345310

I'm going to buy some 1" wheel spacers for the front. I want to run 33" tires, so I'm going to buy lift torsion keys for the front and spacers for the rear.

That makes me sad because I want to keep my Esky Platinum wheels, which are a similar design to those. Is the interference bad enough to require 1" spacers, or are you just wanting to use ones that thick?

 

[Fjs0001]

That makes me sad because I want to keep my Esky Platinum wheels, which are a similar design to those. Is the interference bad enough to require 1" spacers, or are you just wanting to use ones that thick?

It looked like the rim was fully seated on the hub. The caliper still needs to be moved out another 1/8" so that it's centered on the rotor. I think I could probably use a 1/2" wheel spacer and clear everything without grinding on the caliper. You might have more clearance because your wheels appear to angle out more than mine.

 

[SRQYukon]

That makes me sad because I want to keep my Esky Platinum wheels, which are a similar design to those. Is the interference bad enough to require 1" spacers, or are you just wanting to use ones that thick?

I couldn't tell which photo was the 17" and which was the 22". But it looks like a little grind on just the raised part of the casting would make it clear. I haven't installed mine yet, but my 22" snowflake wheels just barely cleared so I ground about 3/16" of the raised casting. It only took a few minutes. The castings of the A/C Delco calipers that I purchased were really rough and irregular, so I ground them smooth, too. If you can grind a little on the calipers, it looks like you could at least get the wheel spacer size down to 1/4". Those don't bolt-on or require longer studs.

 

[gat0r]

^ a couple of users have ground off that bump & then had no issues fitting rims

 

[FrankU]

Between a little grinding of the caliper and a small wheel spacer you will be fine. I'd do the spacer first.

 

[mikeyss]

Does anyone know if the stock 2014 sierra all terrain wheels will have enough clearance for these big calipers? Here's a

Google picture for reference.

 

[FrankU]

Does anyone know if the stock 2014 sierra all terrain wheels will have enough clearance for these big calipers? Here's aView attachment 345768 Google picture for reference.

I have these wheels and test fit the 2021 front calipers , there is plenty of room.

 

[91RS]

I just installed these brakes on my dad’s 2012 yesterday. I drove it and they do feel better than the stock GMT-900 brakes but it isn’t a massive difference like going to the Brembos. If you’re expecting Brembo performance from these, you will be disappointed. They are an upgrade but it isn’t worth buying new wheels just to fit these brakes in my opinion, they aren’t that good. We already had AT4 wheels on his truck so it made sense. I will not be bothering with these for my Yukon since they don’t work with my wheels. I suspect similar performance could be had with EBC Yellowstuff pads in the stock 900 brakes.

 

[SRQYukon]

I just installed these brakes on my dad’s 2012 yesterday. I drove it and they do feel better than the stock GMT-900 brakes but it isn’t a massive difference like going to the Brembos. If you’re expecting Brembo performance from these, you will be disappointed. They are an upgrade but it isn’t worth buying new wheels just to fit these brakes in my opinion, they aren’t that good. We already had AT4 wheels on his truck so it made sense. I will not be bothering with these for my Yukon since they don’t work with my wheels. I suspect similar performance could be had with EBC Yellowstuff pads in the stock 900 brakes.

Yes, you may be right, but this is the 2000-2006 section of the forum. So this thread was started to suggest an upgrade to the GMT-800 2-piston brakes which are grossly inadequate. The GMT-900 already had larger brakes (and rotors, I believe) so I wouldn't have expected as much difference. Plus, if you just put them on yesterday, are they even burnished yet. If not, they will probably improve over the first couple of weeks of driving.