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Proportioning Valve (Prop Valve)

This category on the website [ Servos Valves and Wiring ] we are giving you all of the information related to the individual parts in the Buick Turbo Regal, along with the associated wiring, connector plugs, etc.

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VEHICLE APPLICATION:

Buick Regal, T-Type, Turbo T, Limited, Grand National, GNX

VALVE NAME:

Proportioning Valve (Prop Valve)

PURPOSE OF VALVE:

divides front brake system to rear brake system to provide equal or biased pressure

TURNS ON-OFF / FUNCTIONS / USED WHEN:

whenever the brakes are applied

LOCATION IN VEHICLE:

in brake lines, driver side, under car, in trans tunnel

ORIGINAL GM PART NUMBER:

25509419

VALVE BASE COLOR:

metal, brass (aftermarket versions)

CONNECTOR PLUG COLOR (VALVE SIDE):

off white, with black ring (OEM)
white (aftermarket)

WIRES ATTACHED (VALVE SIDE):

n/a

CONNECTOR PLUG COLOR (HARNESS SIDE):

white

5 threaded fluid outlets on prop valve for brake lines
(2 in [1 front, 1 rear], 3 out [2 front, 1 rear])

NUMBER OF WIRES ATTACHED (HARNESS SIDE):

1 (for brake warning light)

COLOR & PURPOSE OF (HARNESS SIDE) WIRES:

tan-white, goes to “brake” indicator light (on dash)
[this is basically a ground wire for the light]

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PHOTOS OF VALVE AND CONNECTED WIRES:
.

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OTHER NOTES:

[SEE our replacing of the OEM version to aftermarket unit: prop valve replacement]

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Here’s a list of all of the Solenoids Modules and Servos Valves in the Buick Regal:
(click the links to go to the one you need info about)

* Canister Purge Solenoid (Fuel Vapor Canister Purge)
* Chime Module (Chime Alarm)
* Cruise Control Module
* Cruise Control Servo
* EGR Valve
* ESC Module
* Exhaust Gas Recirculation Vacuum Regulator Valve Solenoid (EGR EVRV)
* Heater Flow Water Control Valve
* HVAC Control Vacuum Valve (mode control valve)
* Idle Air Control Valve (IAC)
* PCV Valve (Positive Crankcase Ventilation)
* Proportioning Valve (Prop Valve)
* Starter Solenoid
* Theft Deterrent Controller Module (anti-theft system)
* Torque Converter Clutch Solenoid (TCC)
* Trunk Release Solenoid
* Vacuum Check Valves
* Wastegate Control Solenoid

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