Bravada V6-262 4.3L VIN Z (1991)
The Brake Pressure Modulator Valve (BPMV) (formerly called the EHCU) should be bled after replacement or if air is trapped in it. Bleeding should
not be necessary if the fluid is not contaminated or no air is in the BPMV. There are internal bleed valves on each side of the BPMV that open internal
channels. Open the internal bleed valves (item A) 1/4 to 1/2 turn before bleeding. Should the BPMV need bleeding, it must be bled after the master
cylinder and before the wheel cylinders and calipers.
Notice:
The ignition switch must be in the "OFF" position or false diagnostic trouble codes could be set to memory.
Tools Required:
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J 39177 Combination Valve Pressure Bleeding Tool (Three Required)
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J 35856 can be used if it has been modified as stated in Bulletin 91-T-80.
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TK 00000 Tech-1 Scan Tool
