I didn't have a sensor connected to my intake. I did use the vac hose for the booster to put the sensor in that was in my booster, but that didn't help cancel the read out.

If i cant get it to ohm right then i'm thinking about having my bcm flashed finally.

Yes i have the whole write up with what p/n i used and how i spliced the high pressure hoses. The master i bought used the same lines without adapters.
I would look at your master to see how wide it is then go to the part store to compare. I used all AC Delco parts on mine which i ordered online for a lot cheaper

 

https://www.performancetrucks.net/fo...st-how-534308/
Not trying to thread jack, just figured all the info in one spot would be better

 

I just finished a hydroboost conversion on my truck which is a 07.5 and it turns out i dont have any "sensors" to deal with on my vacuum booster. The master cylinder off an 08 2500HD gas truck was a direct fit in thread pitch and line spread. I also installed a T fitting for the return lines instead of replacing the pump which i also have from the HD truck. I must have gotten lucky on mine but it is basically a W/T trim model so that may be why lol.

 

Great write up ! Just did mines . Was very helpful . Like the guy above mine was pretty plug and play . Everything match up great .got everything from a 2500HD. Hydroboost was a great choice for me since I’m turbo . Truck feels way better and stops in a dime . Thanks again !!

 

Can pictures be uploaded again ? Please and thank you in advance

 

Please add pics back in this thread.

I would think a sticky would retain pictures.

 

I did this resistor install on my 07 Avalanche and it did nothing. Do you have any other ideas that might help? The relay clicks when I hit the brake, but service brake light is still on and as soon as I start to move, stabilatrac and traction control go off as well. My booster had two sensors in it. The one three wire vacuum sensor and a two wire that appears to be a pressure sensor. Any help would be appreciated.

 

Anyone figure out the service brake warning light yet? I can't do this swap if the warning is going to stay on due to state safety inspections.

 

Well, I believe that I figured it out, and posted instructions here: https://www.performancetrucks.net/fo...-c0299-559296/

This fix may only apply to the rotary brake sensor trucks (2012+); as someone with an '07 was unable to get this to work for him. It could also be that the voltages to the EBCM just need to be slightly higher or lower for the earlier GMT900s.

I'm happy to help, and you could certainly try my "Service Brakes Soon" fix before doing a hydroboost conversion.

 

If anyone comes up with a solution for this, please let me know. Thank you