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GMT900 Hydroboost Conversion How-to

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Old 10-25-2015, 12:33 AM   #31  
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Originally Posted by Three6GMC View Post
i got mine to work without saying the service brakes soon message. I just capped off the end that went into the brake booster and left the sensor connected to the intake.
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
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Old 10-25-2015, 12:37 AM   #32  
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Not trying to thread jack, just figured all the info in one spot would be better
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Old 03-03-2016, 12:03 AM   #33  
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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.
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Old 11-28-2017, 01:18 PM   #34  
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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 !!
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