Hydroboost Coversion Left Over Connections
03-19-2017, 04:14 PM
#1
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Hydroboost Coversion Left Over Connections
Finished the hydroboost conversion on 07 tahoe LTZ still have the vaccum boost connections left over. Now getting service brakes soon dic. Trying to figure out how to bypass these connections. One is yellow, orange and grey. The other is separate purple with white stripe and a tan wire that plugs into vaccum boost. Not sure where to go with this any help be great.
03-19-2017, 05:17 PM
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Alright, let's throw some **** at the wall and see what sticks...
Try and jumper out the Grey and Orange wires.
This is giving the EBCM back its full 5 volt reference signal
If that dosn't work, try and jumper out the orange and yellow with a black stripe
This will give the EBCM back its low reference aka ground
The next thing I can think of is to install the sensor and connect it to a vac port to your intake to give it a real vac signal.
Try that and let me know.
03-19-2017, 06:05 PM
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If anyone else can help me and measure a few things to help solve this problem.
First I need the orange wire voltage to ground on a non-hydroboosted truck without the "Service Brakes Soon" message.
Also the resistance across a power brake booster to simulate a connection.
Thanks
First I need the orange wire voltage to ground on a non-hydroboosted truck without the "Service Brakes Soon" message.
Also the resistance across a power brake booster to simulate a connection.
Thanks
03-19-2017, 09:26 PM
#4
What do the 2500s do with the signals? im sure the nnbs 2500s have hydroboost and have to see most of the same information... really too bad there isnt a programmer/tuning program for ebcm, bcm, etc to be able to go in and modify the calibrations on them... i know that a lot of different vehicles use the same modules with different calibrations to activate different options on the different powertrains and other options, hydroboost v vacuum boost, for jnstance.... i know for a fact a denali bcm calibration will allow the tu/td to control a 6l80 in an originally 4l60 equipped vehicle, and as far as i can tell there is a different calibration for the powertrain control side of the bcm... all things being equal there has to be a way to crack into a module other than the ecm/tcm