Message Center fake out
 

I've put up a couple threads about my conversion from vacuum assist brakes to hydroboost. My truck also came equipped with the vacuum assist pump that I've removed. Now every time I start up the truck I'm getting a "Service Brake Booster" in the message center. No big deal, just cancel the message and gone till the next startup.

I've done a little research and have come up with the wiring diagram. Anybody care to tell me how I could wire the plug I've got disconnected to cancel the message? I'm a laymen with electrical circuits but I think If I were to send either a ground or some volatge to the signal wire to the message center it would stop it?

Attachment 139918

I am sure this won't help you but I will give it to you anyway,
Us Denali guys with the air ride shocks will get a service air ride when we switch out the factory shocks, There are no aftermarket shocks for us. We put a resister on all 4 shock connectors and that keeps the codes from popping up.
Mark

Might help If I can find the schematic for the shocks.

I haven't done mine yet, shocks are sitting on a bench in my garage, I can't seem to find the thread that explains it, but I do remember that they just tried a bunch of different resistors until one worked.
Sorry I couldn't be of more help,
Mark

Think I got it. Read the troubleshooting flowchart for the circuit and they keep checking everything for short to voltage for the message to display.

Took a chance and just jumpered the signal wire to ground. Here is the schematic drawn. Message gone. Don't know if anything else will pop up.

Attachment 139919

Picture of the connector. Black wire to Dark Blue wire jumped. Works so far. Taped it up and tucked it back somewhere hidden.
Attachment 139920

Nice work! Congrats on figuring that one out.

ky has this solved your problem to date? im going to do a hydroboost on my new setup and want this message to be non existant.

Sounds like it worked, but to be on the safe side, I would check resistance between pins A and F of the Supplemental Brake Assist Pump Motor and jump the pins of the connector with a similar resistor.

Yes. No issues.

Diggggg, where does this plug in on a factory vac assisted truck?